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Sample records for medicine technologist scintigraphie

  1. Mentoring and the Nuclear Medicine Technologist.

    Science.gov (United States)

    Burrell, Lance

    2018-06-08

    The goal of this article is to give an overview of mentoring for nuclear medicine technologists (NMT). Mentoring is an integral part of the training and practice in the field of nuclear medicine technology. There is a great need for NMTs to continue involvement in mentorship so that we can develop and maintain the talent and leadership that the field needs. In this article, definitions of mentorship will be provided. Then, how mentoring can work; including different methods and techniques will be covered. Next, the benefits of mentoring will be discussed. Finally, advice for improved application will be presented. Throughout, this article will discuss how mentoring applies to the NMT. Copyright © 2018 by the Society of Nuclear Medicine and Molecular Imaging, Inc.

  2. Radiation dose to technologists per nuclear medicine examination and estimation of annual dose.

    Science.gov (United States)

    Bayram, Tuncay; Yilmaz, A Hakan; Demir, Mustafa; Sonmez, Bircan

    2011-03-01

    Conventional diagnostic nuclear medicine applications have been continuously increasing in most nuclear medicine departments in Turkey, but to our knowledge no one has studied the doses to technologists who perform nuclear medicine procedures. Most nuclear medicine laboratories do not have separate control rooms for technologists, who are quite close to the patient during data acquisition. Technologists must therefore stay behind lead shields while performing their task if they are to reduce the radiation dose received. The aim of this study was to determine external radiation doses to technologists during nuclear medicine procedures with and without a lead shield. Another aim was to investigate the occupational annual external radiation doses to Turkish technologists. This study used a Geiger-Müller detector to measure dose rates to technologists at various distances from patients (0.25, 0.50, 1, and 2 m and behind a lead shield) and determined the average time spent by technologists at these distances. Deep-dose equivalents to technologists were obtained. The following conventional nuclear medicine procedures were considered: thyroid scintigraphy performed using (99m)Tc pertechnetate, whole-body bone scanning performed using (99m)Tc-methylene diphosphonate, myocardial perfusion scanning performed using (99m)Tc-methoxyisobutyl isonitrile, and (201)Tl (thallous chloride) and renal scanning performed using (99m)Tc-dimercaptosuccinic acid. The measured deep-dose equivalent to technologists per procedure was within the range of 0.13 ± 0.05 to 0.43 ± 0.17 μSv using a lead shield and 0.21 ± 0.07 to 1.01 ± 0.46 μSv without a lead shield. Also, the annual individual dose to a technologist performing only a particular scintigraphic procedure throughout a year was estimated. For a total of 95 clinical cases (71 patients), effective external radiation doses to technologists were found to be within the permissible levels. This study showed that a 2-mm lead shield

  3. Situation and future outlook of nuclear medicine technologists

    International Nuclear Information System (INIS)

    Kanao, Keisuke

    1981-01-01

    About the situation of nuclear medicine technologists in Japan, survey was made in August, 1979, by sending questionnaire to 219 facilities, and 341 technologists responded, the recovery rate being 70%. About the situation in the United States, the data were taken from the similar survey results in 1975 and 1976. The results in Japan, as compared with those in the United States, are described as follows: years of experience, contents of work, participation in society meetings and others, and occupation prior to the employment as nuclear medicine technologists. The findings are interesting in such items as the sexes of the technologists, the participation in meetings, and the types of works. In Japan, the technologists are dominantly male, while in the United States, more than 80% are female. In Japan, 97% of the technologists participated in society meetings and others. (J.P.N.)

  4. Nuclear Medicine Technologists' Perception and Current Assessment of Quality: A Society of Nuclear Medicine and Molecular Imaging Technologist Section Survey.

    Science.gov (United States)

    Mann, April; Farrell, Mary Beth; Williams, Jessica; Basso, Danny

    2017-06-01

    In 2015, the Society of Nuclear Medicine and Molecular Imaging Technologist Section (SNMMI-TS) launched a multiyear quality initiative to help prepare the technologist workforce for an evidence-based health-care delivery system that focuses on quality. To best implement the quality strategy, the SNMMI-TS first surveyed technologists to ascertain their perception of quality and current measurement of quality indicators. Methods: An internet survey was sent to 27,989 e-mail contacts. Questions related to demographic data, perceptions of quality, quality measurement, and opinions on the minimum level of education are discussed in this article. Results: A total of 4,007 (14.3%) responses were received. When asked to list 3 words or phrases that represent quality, there were a plethora of different responses. The top 3 responses were image quality, quality control, and technologist education or competency. Surveying patient satisfaction was the most common quality measure (80.9%), followed by evaluation of image quality (78.2%). Evaluation of image quality (90.3%) and equipment functionality (89.4%) were considered the most effective measures. Technologists' differentiation between quality, quality improvement, quality control, quality assurance, and quality assessment seemed ambiguous. Respondents were confident in their ability to assess and improve quality at their workplace (91.9%) and agreed their colleagues were committed to delivering quality work. Of note, 70.7% of respondents believed that quality is directly related to the technologist's level of education. Correspondingly, respondents felt there should be a minimum level of education (99.5%) and that certification or registry should be required (74.4%). Most respondents (59.6%) felt that a Bachelor's degree should be the minimum level of education, followed by an Associate's degree (40.4%). Conclusion: To best help nuclear medicine technologists provide quality care, the SNMMI-TS queried technologists to

  5. Reviewing literature: basic advice for nuclear medicine technologists

    International Nuclear Information System (INIS)

    Hutton, Brian F

    2002-01-01

    Nuclear medicine technologists may not have had opportunity to read periodic journals on a regular basis and may feel intimidated by the content, style and jargon used in many journal articles. By becoming familiar with the style of articles and having some grasp of the basic concepts underlying statistical description of data errors and their relation to hypothesis testing, the technologist can begin to appreciate the content in journals. In particular they should appreciate that journal articles are open to debate and do not necessarily represent 'truth' (Au)

  6. The situation of chinese nuclear medicine technologists and strategy in future

    International Nuclear Information System (INIS)

    Zhang Yongxue

    2001-01-01

    Nuclear medicine technologists is an important part of nuclear medicine professionals, and play an important role in the progress of nuclear medicine. The professional quality of nuclear medicine technologists must adapt to the development of nuclear medicine. There is a relatively great gap between China mainland and developed countries in the field of nuclear medicine. In future, it is urgent to improve the professional quality and the educational level of nuclear medicine technologists

  7. The integral formation of the university technologists in nuclear medicine

    International Nuclear Information System (INIS)

    Tossi, Mirta H.; Chwojnik, Abraham; Otero, Dino

    2003-01-01

    Full text: Nuclear medicine has contributed to notable benefits to the human health from the very beginning. The Radioisotopes techniques, as well as the ionizing radiation used, have evolved providing functional and anatomical information of the patient, through non-invasive methods. With reference to Radiological Protection, the justification of each one of these practices and its perfect execution is intimately related to the benefit provided to the patients. The National Atomic Energy Commission apart from favouring the scientific and technological development, considers indispensable to work thoroughly on the professional training of the prospective technologists. Our over twenty-year experience in organizing and delivering courses of Technologists in Nuclear Medicine, although based on a much simpler program, have allowed the Institute of Nuclear Studies of the Ezeiza Atomic Center to acquire the capacity of developing a program to train highly qualified Technologists in that field. This project represents a step forward of great importance to the graduates qualification, since they will have the endorsement of CNEA and of the Faculty of Medicine of the Maimonides University. These are the three outstanding characteristics agreed on: 1.- General Education, carried out by subjects closely related to the optimisation of the relation Technologist - Patient - Environment and represented by: Radiological Protection and Hospital Security, Psychology, Ethics and Professional Medical Ethics, Nursing, English, Hygiene and Hospital Security and Management of the Quality in Services of Health. 2.- Diagnostic Procedures: planned according to organs, apparatuses or systems which are horizontally crossed by the anatomy, physiology and physiopathology Preparation of the patient, indications, main counter indications, radiopharmaceuticals, mechanisms of incorporation, pathologies, clinical protocols, instrumentation, post radiopharmaceuticals administration imaging

  8. Radiation exposures to technologists from nuclear medicine imaging procedures

    International Nuclear Information System (INIS)

    Sloboda, R.S.; Schmid, M.G.; Willis, C.P.

    1986-05-01

    Radiation exposures incurred by nuclear medicine technologists during diagnostic imaging and gamma camera quality control (QC) were measured on a procedural basis over a three-month period using a portable, low-range, self-reading ion chamber. A total of more than 400 measurements were made for 15 selected procedures. From these, mean procedural exposures and standard deviations were calculated. The results show that daily flood phantom QC, at 0.58 mR, and gated cardiac studies, at 0.45 mR, were the two greatest sources of exposure. Other procedures resulted in exposures varying roughly from 0.10 to 0.20 mR. Difficult patients were responsible for a doubling of technologist exposure for many procedures. Standard deviations were large for all procedures, averaging 65% of the mean values. Comparison of technologist exposure inferred from the procedural measurements with the time coincident collective dose equivalent recorded by the TLD service of the Radiation Protection Bureau indicates that approximately half of the collective technologist exposure arose from patient handling and flood QC

  9. Task-specific monitoring of nuclear medicine technologists' radiation exposure

    International Nuclear Information System (INIS)

    Smart, R.

    2004-01-01

    Many studies have demonstrated that the exposure of nuclear medicine technologists arises primarily from radioactive patients rather than from preparation of radiopharmaceuticals. However, in order to devise strategies to reduce staff exposure, it is necessary to identify the specific tasks within each procedure that result in the highest radiation doses. An ESM Eberline FH41B-10 radiation dosemeter, which records the ambient dose equivalent rate, was used to monitor the radiation exposure of a technologist and to record the dose rate in μSv per hour every 32 s throughout a working day. The technologist recorded the procedures that were being performed so that the procedures that resulted in higher doses could be identified clearly. The measured doses clearly showed that the major contributions to the technologist's dose were the following: (1) transferring incapacitated patients from the imaging table to a hospital trolley; (2) difficult injections without syringe shields; and (3) setting up patients for gated myocardial scans. The average dose to the technologist from transferring patients after a bone scan was 0.54 μSv, 40% of the total dose of 1.3 μSv for the complete bone scan procedure. The average dose received injecting 900 MBq of 99 Tc m -HDP using a tungsten syringe shield was 0.57 μSv, but the highest dose was 1.6 μSv, in a patient in whom the injection was difficult. A 0.5 mm lead apron was found to reduce the dose when setting up a patient for a gated stress 99 Tc m -sestamibi myocardial scan by approximately a factor of 2. The average dose per patient for this task was reduced from 1.1 to 0.6 μSv. It is recommended that staff waiting for assistance with patient transfers stand away from the patient, that tungsten syringe shields be used for all radiopharmaceutical injections and that a 0.5 mm lead apron be worn when attending patients containing high activities of 99 Tc m radiopharmaceuticals, such as those having myocardial imaging. (authors)

  10. Issues affecting the motivation of nuclear medicine technologists in Kuwait.

    Science.gov (United States)

    Ali, Layla; Abdelsalam, Amal; Muddei, Sara; Brindhaban, Ajit

    2013-01-01

    The demand for nuclear medicine technologists (NMTs) in Kuwait has increased, especially with the introduction of multimodality imaging systems. In order to increase the number of NMTs in the workforce and retain the existing NMTs, there should be a better way to motivate them. To find out how satisfied NMTs are and the factors that motivate them. An interview was conducted with 40 randomly selected NMTs to explore deep-seated emotions and attitudes that were related to motivation. Questions about the recognition NMTs receive from the general public, whether they are acknowledged as significant contributors to health services, ways to improve the standing of NMTs in society, and the clarity of the job description were included. A questionnaire survey was then conducted with 100 randomly selected NMTs. The questions were designed to elicit wider perspective of the information obtained from the interviews. The results show a need for attention in the Ministry of Health to NMTs for recognition, motivation, and improvement. Giving the NMTs their own identity and opportunities to be part of decision-making in the health team would influence more students to join nuclear medicine departments and give more self-confidence to the existing NMTs.

  11. Saudi regulations for the accreditation of sleep medicine physicians and technologists

    Directory of Open Access Journals (Sweden)

    Ahmed S BaHammam

    2013-01-01

    Full Text Available The professional content of sleep medicine has grown significantly over the past few decades, warranting the recognition of sleep medicine as an independent specialty. Because the practice of sleep medicine has expanded in Saudi Arabia over the past few years, a national regulation system to license and ascertain the competence of sleep medicine physicians and technologists has become essential. Recently, the Saudi Commission for Health Specialties formed the National Committee for the Accreditation of Sleep Medicine Practice and developed national accreditation criteria. This paper presents the newly approved Saudi accreditation criteria for sleep medicine physicians and technologists.

  12. A distance assisted training programme for nuclear medicine technologists methodology and international experience

    International Nuclear Information System (INIS)

    Patterson, Heather

    2002-01-01

    The Distance Assisted Training Programme for Nuclear Medicine Technologists (DAT) has been developed and coordinated through West mead Hospital, Sydney and directed under the auspices of the International Atomic Energy Agency (IAEA). The objective of the program is to provide primarily developing countries with teaching resources for development of technologist education and a framework for the delivery of training courses that can be adapted to best suit local need. Careful planning and development of learning materials, translation to several languages and program implementation have resulted in >400 technologists in 24 countries currently participating in the course of study within Asia, Latin America and Africa. The development and implementation of suitable assessment techniques has provided a structure for technologists to attain a common basic standard in competencies across the regions. Graduates have better opportunities to further their education as well as contribute to improved use of advancing technologies in nuclear medicine (Au)

  13. A work observation study of nuclear medicine technologists: interruptions, resilience and implications for patient safety.

    Science.gov (United States)

    Larcos, George; Prgomet, Mirela; Georgiou, Andrew; Westbrook, Johanna

    2017-06-01

    Errors by nuclear medicine technologists during the preparation of radiopharmaceuticals or at other times can cause patient harm and may reflect the impact of interruptions, busy work environments and deficient systems or processes. We aimed to: (a) characterise the rate and nature of interruptions technologists experience and (b) identify strategies that support safety. We performed 100 hours of observation of 11 technologists at a major public hospital and measured the proportions of time spent in eight categories of work tasks, location of task, interruption rate and type and multitasking (tasks conducted in parallel). We catalogued specific safety-oriented strategies used by technologists. Technologists completed 5227 tasks and experienced 569 interruptions (mean, 4.5 times per hour; 95% CI 4.1 to 4.9). The highest interruption rate occurred when technologists were in transit between rooms (10.3 per hour (95% CI 8.3 to 12.5)). Interruptions during radiopharmaceutical preparation occurred a mean of 4.4 times per hour (95% CI 3.3 to 5.6). Most (n=426) tasks were interrupted once only and all tasks were resumed after interruption. Multitasking occurred 16.6% of the time. At least some interruptions were initiated by other technologists to convey important information and/or to render assistance. Technologists employed a variety of verbal and non-verbal strategies in all work areas (notably in the hot-lab) to minimise the impact of interruptions and optimise the safe conduct of procedures. Although most were due to individual choices, some strategies reflected overt or subliminal departmental policy. Some interruptions appear beneficial. Technologists' self-initiated strategies to support safe work practices appear to be an important element in supporting a resilient work environment in nuclear medicine. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.

  14. Radiation exposure to nuclear medicine technologists from administering I-131 therapy dosages

    International Nuclear Information System (INIS)

    Chaudakshetrin, P.; Pusuwan, P.; Sritongkul, N.; Tuntawiroon, M.

    2007-01-01

    Full text: Therapeutic doses of I-131 for treatment of thyroid cancer are administered orally in liquid or capsule form. During the last few years, a total number of patients loaded in our isolation ward increased from 4 to 10 patients per week. When considering radiation safety precautions for attending technologists, it is preferable to use the dose in capsules. The purpose of this study is to compare radiation exposure to nuclear medicine technologists from administering I-131 therapy dosages in capsules and in liquid form in a closed system. Materials and Methods: Three year radiation exposure to technologists during I-131 administration was analyzed. From January 2004 to June 2005 dose administration was in liquid form (n=263) and from July 2005 to February 2007 in capsules (n=541). Radiation dose assessment was performed with an electronic personal dosimeter (PDM 112). The dose rate in μSv and time spent per patient were recorded. Results: Dose received per patient when I-131 was given in a liquid was 3.50 ± 1.67 μSv and 1.17 ± 0.66 μSv when given in capsules. Compared with the use of a liquid, capsules significantly reduced radiation dose to technologists by 66% (P < 0.001). These doses received depended not only on the administered activity but also on the time, distance and shielding. Time spent per patient, including a brief visit before the time of dosing to explain the procedure and answer questions was reduced slightly from 4.4 ± 2.2 to 3.7 ± 1.8 minutes (P < 0.01). These correspond to a reduction in a yearly dose to 1 technologist by 40%, from 0.63 mSv to 0.38 mSv from dosing to 175 and 325 patients respectively. Conclusions: The measured doses clearly showed that handling of I-131 therapy dosages either in a liquid form or capsules are not the major contributors to the technologist's radiation exposure in routine clinical practice. However, one has to be cautious and follow good work practice to avoid risk of radiation exposure and radioiodine

  15. Work history and radioprotection practices in relation to cancer incidence and mortality in US radiologic technologists performing nuclear medicine procedures.

    Science.gov (United States)

    Bernier, Marie Odile; Doody, Michele M; Van Dyke, Miriam E; Villoing, Daphné; Alexander, Bruce H; Linet, Martha S; Kitahara, Cari M

    2018-05-02

    Technologists working in nuclear medicine (NM) are exposed to higher radiation doses than most other occupationally exposed populations. The aim of this study was to estimate the risk of cancer in NM technologists in relation to work history, procedures performed and radioprotection practices. From the US Radiologic Technologists cohort study, 72 755 radiologic technologists who completed a 2003-2005 questionnaire were followed for cancer mortality through 31 December 2012 and for cancer incidence through completion of a questionnaire in 2012-2013. Multivariable-adjusted models were used to estimate HRs for total cancer incidence and mortality by history of ever performing NM procedures and frequency of performing specific diagnostic or therapeutic NM procedures and associated radiation protection measures by decade. During follow-up (mean=7.5 years), 960 incident cancers and 425 cancer deaths were reported among the 22 360 technologists who worked with NM procedures. We observed no increased risk of cancer incidence (HR 0.96, 95% CI 0.89 to 1.04) or death (HR 1.05, 95% CI 0.93 to 1.19) among workers who ever performed NM procedures. HRs for cancer incidence but not mortality were higher for technologists who began performing therapeutic procedures in 1960 and later compared with the 1950s. Frequency of performing diagnostic or therapeutic NM procedures and use of radioprotection measures were not consistently associated with cancer risk. No clear associations were observed for specific cancers, but results were based on small numbers. Cancer incidence and mortality were not associated with NM work history practices, including greater frequency of procedures performed. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

  16. SPECT/CT co-registration of nuclear medicine studies and technologists: challenges and victories

    International Nuclear Information System (INIS)

    Cameron, P.J.

    2002-01-01

    Full text: A dual modality SPECT/CT gamma camera was installed in the Department of Nuclear Medicine at Fremantle Hospital, WA in 2000. The challenges were satisfying the requirements of the Radiological Advisory Council of WA with respect to room modifications and presence of a radiographer during CT acquisitions and once installation was complete, learning to operate the camera in dual modality mode. The victories are making CT/SPECT acquisitions a simple and routine procedure and the impact of the co-registered studies in both diagnostic and therapeutic applications in our practice. Copyright (2002) The Australian and New Zealand Society of Nuclear Medicine Inc

  17. The radiological technologist

    International Nuclear Information System (INIS)

    Bundy, A.L.

    1988-01-01

    Radiologists rely upon the talents of the technologists with whom they work. Indeed, a good technologist will only enhance the radiologist's performance. Radiological technologists no longer solely take radiographs, but are involved in many more detailed areas of imaging, such as computered tomography, magnetic resonance imaging, nuclear radiology, ultrasound, angiography, and special procedures. They are also required to make decisions that affect the radiological examination. Besides the degree in radiological technology (RT), advanced degrees in nuclear medicine technology (NMT) and diagnostic medical sonography (RDMS) are attainable. The liability of the technologist is not the same as the radiologist involved, but the liability is potentially real and governed by a subdivision of jurisprudence known as agency law. Since plaintiffs and attorneys are constantly searching for new frontiers of medical liability, it is wise for the radiologist and technologist to be aware of the legalities governing their working relationship and to behave accordingly. The legal principles that apply to this working relationship are discussed in this chapter, followed by a presentation of some relevant and interesting cases that have been litigated

  18. Donor evaluation of extended time 99mTcDTPA renal scintigraphy for added information to guide donor kidney selection: a technologist perspective

    International Nuclear Information System (INIS)

    Kale, Chanchala; Tarsaria, Sunita; Jaiswal, R.; Amrita; Roshni; Pallavi

    2010-01-01

    Full text: 99m Tc-DTPA renal scan exposes the patient to considerably less radiation and the images are of superior quality. In donor patients a short time renal scintigraphy to calculate GFR by gates formula is widely accepted in clinical practice. Apart from kidney GFR, renal scan gives added information regarding size, shape and position of kidney, perfusion, peaking time, peak to T 1/2 ratio, transit time, perfusion, split function, assessment of drainage pattern. Aim: The purpose of this study was to evaluate significance of extended time 99m Tc DTPA renogram for appropriate selection of donor kidney. Materials and Method: A retrospective study on 66 patients (female-40, male-26, age range - 22-70 years, mean 48±24) was carried out in our centre. Patients were adequately hydrated before the study. Diuretic intervention renal dynamic scintigraphy (F+10) was performed after administering 5mCi of DTPA intravenously. Sequential dynamic images (Phase I-2 sec/frame for 1 min, Phase II-1 min/frame for 29 min) were acquired posteriorly on GE Millennium VG gamma camera. Pre and post syringe counts were also taken. Standard protocol was used for processing. Along with other parameters GFR by Gates formula was obtained Result: GFR was found to be in the range of 68.7 ml/min - 135.8 ml/min. (mean GFR = 102.25 ml/min). It was found that in 50 patients (75%) both Kidney GFR was normal. Whereas in 2 patients (3.0%) global GFR was low. There were 7 patients (10.60%) in which pelvicalceal hold up was seen which adequately cleared with lasix. One patient ( 99m Tc-DTPA renal scintigraphy with diuretic (F+10, 30 min study) as a functional modality is significantly useful in the selection of donor kidney

  19. Scintigraphy in equine practice

    International Nuclear Information System (INIS)

    Fulton, I.C.; Anderson, B.

    2002-01-01

    The most common use for nuclear medicine in equine practice is bone imaging using technetium 99m as the radionuclide. This article will describe establishment of a facility to perform equine scintigraphy, the peculiarities associated with nuclear medicine and horses and describe a variety of the pathology we identify using scintigraphy. Copyright (2002) The Australian and New Zealand Society of Nuclear Medicine Inc

  20. Guidelines for MIBG-scintigraphy in children; Empfehlungen zur Durchfuehrung der MIBG-Szintigraphie bei Kindern. Leitlinie uebernommen vom Paediatric Committee der European Association of Nuclear Medicine (EANM)

    Energy Technology Data Exchange (ETDEWEB)

    Olivier, P. [CHU Nancy (France); Colarinha, P. [Inst. Portugues de Oncologia, Lisbon (Portugal); Fettich, J. [Univ. Medical Centre Ljubljana (Slovenia); Fischer, S.; Hahn, K.; Porn, U. [Klinik fuer Nuklearmedizin, Univ. of Munich (Germany); Froekier, J. [Aarhus Univ. Hospital - Skejby (Denmark); Giammarile, F. [Centre Leon Berard, Lyon (France); Gordon, I. [Great Ormond Street Hospital for Children, London (United Kingdom); Kabasakal, L. [Cerraphasa Tipp Fakultesi, Nukleer Tipp Ana Bilim Dali, Aksaray (Turkey); Mann, M. [Red Cross Hospital Cape Town (South Africa); Mitjavila, M. [Hospital Universitario de Getafe, Madrid (Spain); Piepsz, A. [AZ VUB and CHU St Pierre, Brussels (Belgium); Sixt, R. [Sahlgrenska Univ. Hospital Oestra, Goeteborg (Sweden); Velzen, J. van [ARPES (Netherlands)

    2002-07-01

    These ''Empfehlungen'' are the german translation of the Guidelines on MIBG-Scintigraphy in Children, which were published by the Paediatric Committee of the European Association of Nuclear Medicine. (orig.) [German] Bei den vorliegenden Empfehlungen handelt es sich um die deutsche Uebersetzung der vom Paediatric Committee der European Association of Nuclear Medicine (EANM) publizierten Guidelines. (orig.)

  1. The new radiation protection ordinance from the viewpoint of the nuclear medicine technologist; Die neue Strahlenschutzverordnung aus der Sicht der medizinisch-technischen Radiologieassistentin/des medizinisch-technischen Radiologieassistenten

    Energy Technology Data Exchange (ETDEWEB)

    Fischer, S. [Klinik und Poliklinik fuer Nuklearmedizin, Ludwig-Maximilians-Univ. Muenchen (Germany)

    2002-05-01

    The new radiation protection ordinance for the first time acknowledges the role of the nuclear medicine technologists for the technical assistance in the use of radiopharmaceuticals and radiation with human beings in medicine. Therefore changes are required for the technologists in terms of their qualification and continuing education during their professional life and in the daily routine in a nuclear medicine department. The new ordinance clearly defines which group of people is allowed to work as nuclear medicine technologists and also which special knowledge in radiation protection is mandatory to make sure that nobody without this certified education is performing the work of a nuclear medicine technologist. The new effective dose limit for people working with radiation will not change the daily work, but new regulations for pregnant women or breastfeeding mothers working in nuclear medicine will bring dramatic changes. (orig.) [German] Die neue Strahlenschutzverordnung beruecksichtigt zum ersten Mal ausdruecklich die Rolle des medizinisch-technischen Personals bei der 'technischen Mitwirkung bei der Anwendung radioaktiver Stoffe oder ionisierender Strahlung am Menschen in der Heilkunde oder der Zahnheilkunde'. Dadurch ergeben sich fuer die MTRA neue Anforderungen in Bezug auf Ausbildungsvoraussetzungen, berufliche Fortbildung und auch auf die Ablaeufe in der taeglichen Routine. Der Personenkreis, der zur technischen Mitwirkung berechtigt ist, wurde genau definiert, ebenso wie dessen Fachkunde, mit der nun sichergestellt werden soll, dass keine Personen ohne Kenntnisse im Strahlenschutz die Taetigkeiten der MTRA ausfuehren. Die neu festgelegte Obergrenze der effektiven Dosis fuer beruflich strahlenexponiertes Personal wird fuer das technische Personal keine merkbaren Auswirkungen mit sich bringen, dafuer aber die Neuerungen bezueglich der Beschaeftigung von Schwangeren und stillenden Frauen. (orig.)

  2. The technologist's role in nuclear medicine in development of centellographic techniques, x-ray guides surgery and molecular techniques

    International Nuclear Information System (INIS)

    Alvarez, Bettina; Juri, Cecilia; Manrique, Gonzalo; Andruskevicius, Patricia; Canepa, Jorge; Coppe, Fatima; Cuervo, Aurora; Lopez, Andrea; Gonzalez, Mirta; Guissoli, Patricia; Rodriguez, Sergio

    2006-01-01

    In our center the Technician in Nuclear Medicine participates in the development and evaluation of Nuclear Medicine and Molecular Biology linked methodologies, with the strategy of the sentinel lymph node (SLN). The aim of the present work is to validate nuclear and molecular methods, using known clinical and prognostic illness parameters. We included prospectively 40 patients with clinically localized melanoma, with an average of 3.6 mm (status: 0.5-15.0 mm) Breslow thickness. The middle age of the patients was 54.2 years (status: 24-82 years), 25 females and 15 males. The tracer used was 99mTc labeled albumin nanocolloid, doing a lymphoscintigraphy 16-18 hours before the surgery, with a total dose of 111-185 MBq. Sequential images were acquired every 5 minutes in a gamma camera during an hour post injection or until drainage was visualized. Once a SLN was located, we did an orthogonal view to locate the nodals in the three-dimensional space. The nodal territories identified by means of lymphoscintigraphy were explored surgically employing an intraoperative gamma probe. Nodal and adjacent tissue radioactivity was measured in vivo and verified ex vivo after the resection. A relation of counts node/background bigger than 2 in vivo and bigger than 10 ex vivo was established in order to consider a node SLN. The SLNs were analyzed by means of histopathology and in 14 patients the expression was studied also using RT-PCR, employing TIR, MART-1 and MIA as markers, in a single-step protocol with 35 cycles of amplification. The experiments were done in duplicates and they included positive and negative control panels. SLN was identified in 38/39 surgical patients (97.4 %), each patient presenting an average of 1.3 nodal. Nodal metastasis were diagnosed by histopathology in 9 patients (24 %). A significant correlation was stated between the metastasis commitment of the SLN and the illness relapsing (p=0.019) during the follow up of 40.8 months (status: 6.7-94.6 months

  3. Procedures of hepatic scintigraphy and improvement of professionals by using anthropomorphic simulator object of liver in nuclear medicine

    International Nuclear Information System (INIS)

    Ferreira, Fernanda C.L.; Cunha, Cledison J.; Dullius, Marcos A.; Souza, Divanizia N.

    2011-01-01

    This paper evaluates hepatic scintigraphy procedures and the possibility of professional improvement in nuclear medicine by using three-dimension anthropomorphic simulators representative of adult human liver. For the conformation of anthropomorphic simulator, it was used gypsum and acrylic. Three simulator objects representing cirrhosis livers. The simulator were filled with 99m Tc diluted in water for the obtention of scintigraphic images. Tomographic images were analysed posterior and anterior of simulator representing an organ with more cirrhosis grade. It was observed that the simulators make possible the acquisition of images similar to the real images of liver with hepatic cirrhosis. The simulations of hemangiomas can contribute for continuous education of nuclear medicine professionals, as far the question of image formation is concerned, make possible the parameter study as, for example, the , matrix size energy window, zoom and counting statistic

  4. Hepatobiliary scintigraphy

    International Nuclear Information System (INIS)

    Velchik, M.G.

    1988-01-01

    This chapter describes the role of nuclear medicine in the evaluation of the hepatobiliary system. The technical aspects of hepatobiliary scintigraphy, or cholescintigraphy (radiopharmaceutical, radiation dosimetry, instrumentation, and method) are briefly presented, followed by a discussion of each of the indications for such examination. Its relative advantages and disadvantages with respect to alternative radiographic examinations are emphasized. Logical, efficient, cost-effective sequences of diagnostic studies are recommended whenever appropriate in order to derive the maximum information with the least time and expense. It is hoped that the reader will come away with an appreciation of the type of diagnostic information provided by hepatobiliary scintigraphy, its accuracy, its application in the workup of the patient with hepatobiliary disease, and its strengths and limitations compared with other radiologic studies

  5. A real-time monitoring study of the personal dose received by nuclear medicine technologists administering 18F-FDG in a high patient throughput PET centre

    International Nuclear Information System (INIS)

    Wallace, Anthony; U, Paul; Hickson, Kevin; Bradley, Jason; Welch, Jessica; Pathmaraj, Kunthi

    2008-01-01

    The rapid growth in PET studies has resulted in an increasing occupational radiation exposure to nuclear medicine staff. This project has used, a real-time, solid-state, 2 second resolution, personal dosimeter to monitor the occupational Hp(10) equivalent dose of nuclear medicine technologist (NMT) staff managing FDG patients. A detailed manual mapping of the patient management procedure, time dependence and distance relationships to the sources of exposure and their magnitudes was undertaken. Experimental results show, that a junior NMT may spend on average 52% of the close contact time (< 2 m) with the patient when administering an FDG dose compared to 36% of that time for the senior NMT. The average daily dose from isotope administration of a junior NMT and senior NMT is 15 μSv and 11.4 μSv respectively. Post-administration, escorting the patient into the scanner room and setting-up the patient on the PET scanner bed, takes approximately 27% of the junior NMT time to perform, which results in an average daily dose of 7.8 μSv. The senior NMT takes approximately 33% of their time for the same task, with an average daily dose of 10.3 μSv. Removing the patient from the scanner room and escorting them from the department takes about 21% of the junior NMT time giving 6.2 μSv of dose and 31% or 9.7 μSv for the senior NMT. At the conclusion of this study the typical daily dose received by NMT staff, working in close contact with FDG patients is approximately 29 μSv for junior NMT (4 - 5 mSv/yr) and 31.4 μSv (5 - 7 mSv/yr) for senior NMT. Currently this centre is performing approximately 3,400 FDG injections per year plus 50 research injections of various positron emitters. This occupational dose load is spread across 3 dedicated PET NMT staff and 1.5 EFT NMT staff rotating through PET centre from the nuclear medicine department and 1 EFT registrar physician. (author)

  6. The work environment and its effect on engagement and retention of nuclear medicine technologists: differences between public and private sector workers.

    Science.gov (United States)

    Adams, Edwina J; Cox, Jennifer M; Adamson, Barbara J; Schofield, Deborah J

    2010-06-01

    The retention of Australian nuclear medicine technologists (NMTs) is poor with the future workforce size in question. As a consequence, the primary aim of this study was to determine Australian NMTs' level of work engagement and the factors influencing this to identify the issues surrounding retention. The job demands resource model assumes that each job has its own demands and resources and the balance between these can influence the level of work engagement. Lower levels of work engagement are predictive of an intention to leave. Work engagement levels can be measured using the Utrecht work engagement scale. This study used the Utrecht Work Engagement Scale in a self-report questionnaire with additional open-ended and closed-ended items designed to evaluate satisfying job characteristics. Members of the professional body in specific geographical locations of Australia were invited to participate. A 49.6% response rate was achieved (n=201); of these, 164 were practicing NMTs. Public sector workers had significantly lower total mean scores (P=0.05) on the Utrecht Work Engagement Scale and the subscale of dedication (P=0.005) compared with private NMTs. Seven of the 14 job satisfaction closed-ended items were statistically significantly lower for public NMTs: the level of decision making; feelings of importance with the tasks performed; feedback on tasks and roles; and relationships with physicians, staff and the organization. To improve the retention of NMTs, changes in the job resources and demands are needed. Advanced practice roles may improve retention by enhancing the job resources.

  7. On-line distance assisted training program for nuclear medicine technologists applied to SPECT-CT and PET-CT (Program DAT-OL). Results of a first course in Argentina

    International Nuclear Information System (INIS)

    Furnari, J C; Notari, C; Daoud, A; Giannone, C A

    2012-01-01

    The CNEA and the IDB are running for the second time the Distance Assisted Training course (DAT-OL), which is part of a global program of the International Atomic Energy Agency (IAEA) for Nuclear Medicine technologists working in centers equipped with PET CT and / or SPECT-CT hybrids. Aims: Completion of this course is justified by the strong increase in the installation of hybrid nuclear medicine (NM) systems, the increasing demand for qualified technicians and the lack of formal training opportunity. The course objective is to both promote the qualification of the technologist as improving quality and operational safety in MN participating centers. Material and Methods: This new course is free and is taught in Spanish from the www.datnmt.org website. The study material is available on site and the training is aided by tutors of institutions as CNEA, FUESMEN (School of Nuclear Medicine Foundation), UBA (University of Buenos Aires) and Nuclear Medicine private labs. The DAT-OL is developed in modules: Physics of SPECT / CT and PET / CT; Principles and sectional anatomy CT, SPECT / CT and PET / CT clinical; cyclotron and radiopharmaceutical production; Radiation Safety in PET / CT; Workflows and protocols with PET / CT, clinical reports: normal variants, artifacts and failures. Some of the requirements to take the DAT-OL are: Access to camera PET / CT and / or camera SPECT / CT, and a supervisor (Nuclear Medicine physician or Medical physicist) at the center of NM where the student works. Technicians must have academic qualification, 5 or more years working in centers MN, previous courses in Biology, Physics SPECT and SPECT Clinical course and a Methodology of Radioisotopes and radiation protection course. Results: The first course lasted 12 months including examinations. Tutors have scarcely been consulted. SPECT/CT and PET/CT web examinations, have been developed and evaluated by the authors of the course (B. Hutton and H. Patterson, University of London and

  8. Role of the technologist

    International Nuclear Information System (INIS)

    Bray, A.P.

    1985-01-01

    This paper discusses the role of the technologist in helping achieve all the objectives of the nuclear project - not only the technical objectives, but the business and societal objectives as well. It is important to realize at the outset the many objectives that the project can fulfill, including the contribution it can make to national development. The technologist may act as consultant, a partner, a business administrator or an agent of the utility, helping implement a management approach that furthers not only technical, but business and societal objectives as well. Two very different approaches to contracting are possible. On the one hand, the utility places heavy pressure on bidders to accept the risk of schedule and license, and forces suppliers to charge higher prices and make little use of local talent. On the other hand, the utility may recognize the need to develop national capability in the nuclear industry, and accept cooperative contracts which encourage suppliers to foster and employ local talent. This issue must be given attention in the initiation of future national nuclear power programs: whether to minimize the cost of the plant or maximize the cultivation and development of national capability

  9. Adrenal scintigraphy

    International Nuclear Information System (INIS)

    Beierwaltes, W.H.

    1979-01-01

    The following items are discussed:anatomy and physiology of adrenal glands, clinical indications of scintigraphy, radiobiology and radiochemistry, scintigraphic imaging, adrenocortical hyperfunction, aldosteronism and hypertension associated with low renin level, excess of androgen, adrenocortical hyperfunction and future perspectives of adrenal scintigraphy. (M.A.) [pt

  10. Lung scintigraphy

    International Nuclear Information System (INIS)

    Dalenz, Roberto.

    1994-01-01

    A review of lung scintigraphy, perfusion scintigraphy with SPECT, lung ventilation SPECT, blood pool SPECT. The procedure of lung perfusion studies, radiopharmaceutical, administration and clinical applications, imaging processing .Results encountered and evaluation criteria after Biello and Pioped. Recommendations and general considerations have been studied about relation of this radiopharmaceutical with other pathologies

  11. Technologists in transition

    DEFF Research Database (Denmark)

    Andersen, Torben

    2008-01-01

    The very much debated topic of MBA-students loyalty towards their own career, rather than the companies sponsoring their education, has in only very few situations been empirically tested. It seems as if the debate is very emotional and rather seldom based on facts – i.e. leaving it to the indivi......The very much debated topic of MBA-students loyalty towards their own career, rather than the companies sponsoring their education, has in only very few situations been empirically tested. It seems as if the debate is very emotional and rather seldom based on facts – i.e. leaving...... it to the individual managers to consult their gut feeling in the decision whether or not the younger manager or employee is to participate in an MBA-program. The present study provides data on the motives behind, experiences during and outcomes afterwards an MBA-program. The study is based on a survey carried out...... showing a high loyalty to the organization and the fact that the individual has a strong managerial motivation. This way the MBA-program works as a company external mechanism providing technologists with the necessary guidance, support, terminology, methods and personal insights about competences to move...

  12. Adrenal scintigraphy

    International Nuclear Information System (INIS)

    Veen, E.A. van der.

    1978-01-01

    The visualization of functioning adrenocortical tissue by scintigraphy became possible with the introduction of radioiodinated cholesterol derivatives. According to the literature, there is evidence that one of these iodinated cholesterols, 6-β-iodomethyl-nor-cholesterol, concentrates in the adrenal cortex to a much greater extent than 131 I-19-odocholesterol. Results comparing both radiopharmaceuticals are described. The authors investigated the possibility of increasing the uptake of iodinated cholesterol using simultaneous ACTH and the 'cholesterol side-chain cleavage enzymeblocker': aminoglutethimide. The results of adrenal scintigraphy performed in 37 patients are described. Finally, the literature on adrenal scintigraphy is reviewed, and results reported in various studies are compared. (Auth.)

  13. Gastroesophageal scintigraphy

    Energy Technology Data Exchange (ETDEWEB)

    Malmud, L.S.; Fisher, R.S.

    1980-01-01

    The technique of gastroesophageal scintigraphy was developed in order to quantitatively detect reflux from the stomach into the esophagus. The scintigraphic technique was compared to previous diagnostic tests. None of the other techniques is as sensitive as gastroesophageal scintigraphy for the detection of reflux, in comparison to the acid reflux test. Gastroesophageal scintigraphy is able to detect gastroesophageal reflux acurately, rapidly, noninvasively, and more sensitively than other diagnostic techniques. In addition, it is able to be employed to quantitate reflux and is suitable for studying the effects of various therapeutic modalities.

  14. Hepatobiliary scintigraphy in patients with bile leaks

    International Nuclear Information System (INIS)

    Carichner, S.L.; Nagle, C.E.

    1987-01-01

    Hepatobiliary scintigraphy has been recognized as a useful tool in detecting the presence and sites of bile leaks. The clinical settings in which bile leaks are likely to occur, as well as some of the scintigraphic patterns seen in patients with bile leaks, are reviewed here. Tips for technologists are offered on interventions that might enhanced the quality of information available to the nuclear physician

  15. Investigations of actual conditions of medical radiation technologists

    International Nuclear Information System (INIS)

    2002-01-01

    At 50 year after enactment of the law of medical radiation technologists, their actual conditions were investigated. The investigation was done in December 2001 by questionnaire to directors of 10,514 facilities and answers were obtained from 4,241 facilities (40.37%). Following 11 questions (major answers and their analysis in parenthesis) were made: Nature of the facility (Private hospitals 45.8%, public ones 20.8%); State of radiation department (Independent department of the technologists from medical one about 30%); Actual job of the technologists (X-ray about 81% of the facilities, angiography 34%, CT 78%, MRI 38% where 94% of technologists conduct, nuclear medicine 17%, ultrasound 51% where, 10%); Personnel of the radiation department (21,897 persons in total/male 85%); Fulfillment of the personnel number; Treatment of the personnel; Acknowledgement system of the Technologist Society; Management of radiation instruments like daily examination; Radiation control (Leak dose measurement by technologists by themselves about 50% facilities for X-ray and radio-therapy); Medical exposure (Measurement experience about 50%); and Possession of dose rate-meter/survey-meter (Possession in about 40% facilities). (N.I.)

  16. Investigations of actual conditions of medical radiation technologists

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-12-01

    At 50 year after enactment of the law of medical radiation technologists, their actual conditions were investigated. The investigation was done in December 2001 by questionnaire to directors of 10,514 facilities and answers were obtained from 4,241 facilities (40.37%). Following 11 questions (major answers and their analysis in parenthesis) were made: Nature of the facility (Private hospitals 45.8%, public ones 20.8%); State of radiation department (Independent department of the technologists from medical one about 30%); Actual job of the technologists (X-ray about 81% of the facilities, angiography 34%, CT 78%, MRI 38% where 94% of technologists conduct, nuclear medicine 17%, ultrasound 51% where, 10%); Personnel of the radiation department (21,897 persons in total/male 85%); Fulfillment of the personnel number; Treatment of the personnel; Acknowledgement system of the Technologist Society; Management of radiation instruments like daily examination; Radiation control (Leak dose measurement by technologists by themselves about 50% facilities for X-ray and radio-therapy); Medical exposure (Measurement experience about 50%); and Possession of dose rate-meter/survey-meter (Possession in about 40% facilities). (N.I.)

  17. Salivary scintigraphy

    International Nuclear Information System (INIS)

    Sabri, P.J.

    1988-01-01

    Salivary gland scintigraphy with technetium 99m ( 99m Tc) in the form pertechnetate ion is a relatively simple procedure, which can provide a unique and sensitive means for investigating salivary gland physiologic function and its derangements. However, salivary scintigraphy is poorly suited for the detection and characterization of masses in and around the salivary glands. Computed tomography (CT) has, therefore, largely supplanted scintigraphy for the evaluation of masses and is the method of choice because it can provide exquisite anatomic detail. Consequently, CT is more sensitive for mass detection and can also provide useful information as to whether a mass has arisen from within or from outside of a salivary gland or whether a mass is circumscribed or invasive. It also can disclose the relationship of the mass to the facial nerve and occasionally can provide histologic characterization of such masses as cysts, lipomas, and masseter muscle hypertrophy

  18. Guidelines for MIBG-scintigraphy in children

    International Nuclear Information System (INIS)

    Olivier, P.; Colarinha, P.; Fettich, J.; Fischer, S.; Hahn, K.; Porn, U.; Froekier, J.; Giammarile, F.; Gordon, I.; Kabasakal, L.; Mann, M.; Mitjavila, M.; Piepsz, A.; Sixt, R.; Velzen, J. van

    2002-01-01

    These ''Empfehlungen'' are the german translation of the Guidelines on MIBG-Scintigraphy in Children, which were published by the Paediatric Committee of the European Association of Nuclear Medicine. (orig.) [de

  19. Bone scintigraphy in psoriasis

    Energy Technology Data Exchange (ETDEWEB)

    Hahn, K.; Thiers, G.; Eissner, D.; Holzmann, H.

    1980-08-01

    Since 1973 bone scintigraphy using sup(99m)Tc-phosphate-complexes was carried out in 382 patients with psoriasis. For comparison with the results of nuclear medicine, roentgenologic and clinical findings a group af 121 patients with psoriasis aged between 11 and 74 years was compared to a group of 42 patients aged between 20 and 49 years without roentgenologic and clinical signs of psoriasis arthritis. We found by means of isotope investigation that an essentially greater part of the bones adjacent to the joints was involved than was expected according to X-ray and clinical findings. In addition, in 205 patients with psoriasis whole-body scintigraphy, using sup(99m)Tc-MDP, was carried out since 1977/78. In 17 patients we found an increased accumulation of activity in the region of extraarticular structures of the skull as well as of the skeletal thorax. According to these results we conclude that in addition to the clinically and roentgenologically defined psoriatic arthritis in patients with psoriasis an osteopathy may exist, which can only be demonstrated by skeletal scintigraphy and which is localized in bones adjacent to the joints but can also be demonstrated in the region of extraarticular bones.

  20. Bone scintigraphy in psoriasis

    International Nuclear Information System (INIS)

    Hahn, K.; Thiers, G.; Eissner, D.; Holzmann, H.; Frankfurt Univ.

    1980-01-01

    Since 1973 bone scintigraphy using sup(99m)Tc-phosphate-complexes was carried out in 382 patients with psoriasis. For comparison with the results of nuclear medicine, roentgenologic and clinical findings a group af 121 patients with psoriasis aged between 11 and 74 years was compared to a group of 42 patients aged between 20 and 49 years without roentgenologic and clinical signs of psoriasis arthritis. We found by means of isotope investigation that an essentially greater part of the bones adjacent to the joints was involved than was expected according to X-ray and clinical findings. In addition, in 205 patients with psoriasis whole-body scintigraphy, using sup(99m)Tc-MDP, was carried out since 1977/78. In 17 patients we found an increased accumulation of activity in the region of extraarticular structures of the skull as well as of the skeletal thorax. According to these results we conclude that in addition to the clinically and roentgenologically defined psoriatic arthritis in patients with psoriasis an osteopathy may exist, which can only be demonstrated by skeletal scintigraphy and which is localized in bones adjacent to the joints but can also be demonstrated in the region of extraarticular bones. (orig.) [de

  1. Myocardial scintigraphy

    International Nuclear Information System (INIS)

    Bunko, Hisashi; Hisada, Kinichi

    1982-01-01

    Among the various methods of image diagnosis of the cardiovascular disorder, nuclear cardiology provides noninvasive means for evaluation of myocardial perfusion as well as morphological and functional informations. In this article, clinical application and image diagnosis of myocardial scintigraphy including Tl-201 myocardial perfusion scintigraphy, single photon emission computed tomography with Tl-201, acute myocardial infarction scintigraphy with Tc-99m-pyrophosphate and Ga-67 imaging of the heart, were discussed. Multiplanar imaging of the heart with Tl-201 after stress and at redistribution was the accepted method for detection and evaluation of the ischemic heart disease. Although it achieved high sensitivity and specificity for ischemic heart disease, detection of the small ischemia and quantation of the regional Tl-201 accumulation were difficult with conventional multiplanar imaging. Application of emission computed tomography improved detectability and quantitativity of the ischemia. However, 7-pinhole tomography did not increase the diagnostic accuracy significantly. It had limited clinical applicability due to poor quantitativity in spite of improved image contrast and its tomographic nature. Advantage and limitation of these tomographic imaging and multiplanar imaging were discussed. Problems and prognostic significance of pyrophosphate imaging of the acute myocardial infarction were also discussed. Visualization of the heart with Ga-67 was helpful for identification of the tumor or inflammation of the heart as well as evaluation of the effect of the therapy. (author)

  2. Liver scintigraphy

    International Nuclear Information System (INIS)

    Tateno, Yukio

    1996-01-01

    Liver scintigraphy can be classified into 3 major categories according to the properties of the radiopharmaceuticals used, i.e., methods using radiopharmaceuticals which are (1) incorporated by hepatocytes, (2) taken up by reticulo endothelial cells, and (3) distributed in the blood pool of the liver. Of these three categories, the liver scintigraphy of the present research falls into category 2. Radiopharmaceuticals which are taken up by endothelial cells include 198 Au colloids and 99m Tc-labelled colloids. Liver scintigraphy takes advantage of the property by which colloidal microparticles are phagocytosed by Kupffer cells, and reflect the distribution of endothelial cells and the intensity of their phagocytic capacity. This examination is indicated in the following situations: (i) when you suspect a localized intrahepatic lesion (tumour, abscess, cyst, etc.), (ii) when you want to follow the course of therapy of a localized lesion, (iii) when you suspect liver cirrhosis, (iv) when you want to know the severity of liver cirrhosis or hepatitis, (v) when there is hepatomegaly and you want to determine the morphology of the liver, (vi) differential diagnosis of upper abdominal masses, and (vii) when there are abnormalities of the right diaphragm and you want to know their relation to the liver

  3. Guidelines for radioiodinated MIBG scintigraphy in children.

    Science.gov (United States)

    Olivier, Pierre; Colarinha, Paula; Fettich, Jure; Fischer, Sibylle; Frökier, Jörgen; Giammarile, Francesco; Gordon, Isky; Hahn, Klaus; Kabasakal, Levent; Mann, Mike; Mitjavila, Mercedes; Piepsz, Amy; Porn, Ute; Sixt, Rune; van Velzen, Jeannette

    2003-05-01

    These guidelines on the use of radioiodinated (99m)Tc-MIBG scintigraphy in children, which summarise the views of the Paediatric Committee of the European Association of Nuclear Medicine, provide a framework which may prove helpful to nuclear medicine teams in daily practice. They have been influenced by the conclusions of the "Consensus Guidelines for MIBG Scintigraphy" (Paris, November 6, 1997) of the European Neuroblastoma Group and by those of the Oncological Committee of the French Society of Nuclear Medicine. The guidelines should be taken in the context of "good practice" and any local/national rules which apply to nuclear medicine examinations.

  4. The Academic Curriculum of Medical Radiation Technologists: Continuous Development

    International Nuclear Information System (INIS)

    Sergieva, K.; Gagova, P.; Bonninska, N.

    2016-01-01

    Full text: The purpose is to present the activities of Department of Radiation technologists at Medical College Sofia in knowledge management (KM) in human health applications and namely: continuous development of academic curriculum (AC) for medical radiation technologists (MRT) in sense of the conference motto “Nuclear Knowledge Management: Challenges and Approaches”. Our challenge is to realize, in practice, the important role of MRT professionals in healthcare. They are the front line in the patient safety and the last person with the patient before exposure. The existing AC has been periodically peer-reviewed: in 2011, 2014, and ongoing reviews, with the aim to guarantee that we are providing knowledge, skills and competencies that meet modern requirements for the training of radiation technologists. The AC compromises both academic and clinical education. The clinical component occurs throughout the academic course, accenting the role of MRT in radiology, radiotherapy and nuclear medicine. The approach of continuously developing the AC will meet the stringent requirements recently published by IAEA, with the goal that radiological medical practitioners, medical physicists, medical radiation technologists and other health professionals with specific duties in relation to protection and safety for patients in a given radiological procedure are specialized in the appropriate area. (author

  5. Radiation protection technologist training and certification program

    International Nuclear Information System (INIS)

    1982-10-01

    The purpose of this program is to establish training requirements and methods for certifying the technical competence of Radiation Protection Technologists. This manual delineates general requirements as well as academic training, on-the-job training, area of facility training, and examination or evaluation requirements for Radiation Protection Trainees (Trainees), Junior Radiation Protection Technologists (JRPT), Radiation Protection Technologists (RPT), and Senior Radiation Protection Technologists (SRPT). This document also includes recertification requirements for SRPTs. The appendices include training course outlines, on-the-job training outlines, and training certification record forms

  6. [Lung scintigraphy].

    Science.gov (United States)

    Schümichen, Carl; Schmidt, Matthias; Krause, Thomas

    2018-06-01

    The S1 guideline for lung scintigraphy has been updated and extended in order to emphasize the advantages oft the method in detecting acute pulmonary embolism (PE) in the periphery oft the lung (subsegmental PE), in underlying subacute and chronic pulmonary disorders, as well as in detecting chronic LE (CTEPH). Method of choice is ventilation / perfusion (V/P) SPECT or V/P SPECT/CT with even higher specificity. Because of its high sensitivity, a threshold (V/P mismatch in at least one segment or two subsegments) is introduced to avoid overtreatment. In case of a change in the therapeutic approach (observation only instead of anticoaculation) the threshold can be omitted. New data concerning the clinical and therapeutical impact of subsegmental PE are included, the chapters open questions have been extented. Other indications for V/P SPECT (secondary diagnoses, abnormalities in pulmonary perfusion, prediction of postoperative lung function) are presented with new data. Schattauer GmbH.

  7. The value of scintigraphy in skeleton diagnostics

    International Nuclear Information System (INIS)

    Wickenhauser, J.

    1976-01-01

    The complex topic of diagnostics of the numerous skeleton diseases was enriched by nuclear medicine, for it is now possible to complete the static picture of morphologic changes resulting from radiologic examinations by its functional component, shown in scintigraphy. This shows that maximal information can only be obtained if the results of skeleton scintigraphy are, according to their importance, integrated into the total picture of the diagnostical decision procedure the centre of which is taken by radiology as was always the case. Because of the different results they lead to, none of the methods can be replaced by another, but they can only complete one another. For the reasons mentioned, the isolated use of skeleton scintigraphy, as it is usual in many places, does not seem not purposeful. Using 8 cases, the author tried to show the problems of skeleton scintigraphy and its position in the diagnostical decision procedure in osteology. (orig.) [de

  8. The EANM practice guidelines for bone scintigraphy

    International Nuclear Information System (INIS)

    Wyngaert, T.V. den; Strobel, K.; Kampen, W.U.; Kuwert, T.; Bruggen, W. van der; Mohan, H.K.; Gnanasegaran, G.; Delgado-Bolton, R.; Weber, W.A.; Beheshti, M.; Langsteger, W.; Giammarile, F.; Mottaghy, F.M.; Paycha, F.

    2016-01-01

    The radionuclide bone scan is the cornerstone of skeletal nuclear medicine imaging. Bone scintigraphy is a highly sensitive diagnostic nuclear medicine imaging technique that uses a radiotracer to evaluate the distribution of active bone formation in the skeleton related to malignant and benign disease, as well as physiological processes. The European Association of Nuclear Medicine (EANM) has written and approved these guidelines to promote the use of nuclear medicine procedures of high quality. The present guidelines offer assistance to nuclear medicine practitioners in optimizing the diagnostic procedure and interpreting bone scintigraphy. These guidelines describe the protocols that are currently accepted and used routinely, but do not include all existing procedures. They should therefore not be taken as exclusive of other nuclear medicine modalities that can be used to obtain comparable results. It is important to remember that the resources and facilities available for patient care may vary. (orig.)

  9. Procedures of hepatic scintigraphy and improvement of professionals by using anthropomorphic simulator object of liver in nuclear medicine; Procedimentos de cintilografia hepatica e aperfeicoamento de profissionais utilizando objeto simulador antropomorfico de figado em medicina nuclear

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira, Fernanda C.L.; Cunha, Cledison J.; Dullius, Marcos A.; Souza, Divanizia N., E-mail: divanizi@ufs.b [Universidade Federal de Sergipe (UFS), Aracaju, SE (Brazil)

    2011-10-26

    This paper evaluates hepatic scintigraphy procedures and the possibility of professional improvement in nuclear medicine by using three-dimension anthropomorphic simulators representative of adult human liver. For the conformation of anthropomorphic simulator, it was used gypsum and acrylic. Three simulator objects representing cirrhosis livers. The simulator were filled with {sup 99m}Tc diluted in water for the obtention of scintigraphic images. Tomographic images were analysed posterior and anterior of simulator representing an organ with more cirrhosis grade. It was observed that the simulators make possible the acquisition of images similar to the real images of liver with hepatic cirrhosis. The simulations of hemangiomas can contribute for continuous education of nuclear medicine professionals, as far the question of image formation is concerned, make possible the parameter study as, for example, the , matrix size energy window, zoom and counting statistic

  10. Biomedical Science Technologists in Lagos Universities: Meeting ...

    African Journals Online (AJOL)

    Biomedical Science Technologists in Lagos Universities: Meeting Modern Standards ... like to see in biomedical science in Nigeria; 5) their knowledge of ten state-of-the-arts ... KEY WORDS: biomedical science, state-of-the-arts, technical staff ...

  11. Challenges before Women Scientists, Technologists & Engineers

    Indian Academy of Sciences (India)

    NATIONAL INSTITUTE OF TECHNOLOGY. ROURKELA ... oBjectives. To provide a common platform for women scientists, engineers and technologists ... particularly from companies involving women entrepreneurs and managers. expected ...

  12. Chondromalacia patellae: Bone scintigraphy correlated with arthroscopic findings

    International Nuclear Information System (INIS)

    Kohn, H.S.; Guten, G.N.; Collier, B.D.; Veluvolu, P.; Whalen, J.P.

    1987-01-01

    Fifty adult sports medicine patients with anterior knee pain and other clinical findings of chondromalacia patellae unresponsive to more than 3 months of conservative therapy were evaluated with bone scintigraphy with subsequent arthroscopic correlation. There was significant correlation (Sperman rank correlation = .545, P < .001) between the intensity of increased patellar scintigraphic activity and the Metcalf grade of chondromalacia seen at arthroscopy. Bone scintigraphy also disclosed clinically unsuspected torn menisci. Bone scintigraphy contributes to accurate diagnostic evaluation and appropriate surgical planning for adult sports medicine patients with chronic anterior knee pain

  13. An atlas of normal skeletal scintigraphy

    International Nuclear Information System (INIS)

    Flanagan, J.J.; Maisey, M.N.

    1985-01-01

    This atlas was compiled to provide the neophyte as well as the experienced radiologist and the nuclear medicine physician with a reference on normal skeletal scintigraphy as an aid in distinguishing normal variations in skeletal uptake from abnormal findings. Each skeletal scintigraph is labeled, and utilizing an identical scale, a relevant skeletal photograph and radiograph are placed adjacent to the scintigraph

  14. Teaching and training programmes in nuclear medicine for medical and paramedical personnel at the Radiation Medicine Centre, Bhabha Atomic Research Centre

    International Nuclear Information System (INIS)

    Sharma, S.M.; Raikar, U.R.

    1986-01-01

    Prior to 1976, the Radiation Medicine Centre had conducted 12 short courses of five weeks' duration on medical uses of radioisotopes. A total of 162 medical and scientific personnel attended the courses from various parts of India. Owing to the rapid advances made in nuclear medicine these courses were becoming inadequate, and in 1973 the Centre introduced one-year full time training courses for doctors and science graduates, peparing them for examinations for the Diploma in Radiation Medicine (DRM) and the Diploma in Medical Radioisotope Techniques (DMRIT) of the University of Bombay. By March 1984, 64 doctors and 53 technologists had obtained the DRM and DMRIT. A recent survey indicated that 70% of the DRM physicians and 68% of the DMRIT technologists are employed in nuclear medicine departments. Besides the formal one-year training courses, the Centre has conducted advanced courses of two weeks' duration on scintigraphy and thyroid function tests. The Radiation Medicine Centre has been the regional reference centre in nuclear medicine for the World Health Organization and International Atomic Energy Agency for more than ten years. The Centre has trained sponsored personnel from other countries of the region. The Centre has also organized seven symposia, workshops and seminars, four of them in collaboration with WHO and one with the IAEA. (author)

  15. Professional liability of the radon technologist

    International Nuclear Information System (INIS)

    Kornreich, M.R.

    1987-01-01

    The radon technologist will want to protect himself from lawsuits by plaintiffs who believe they have suffered consequences of a false measurement or erroneous recommendation. The author may be sued for negligence or on the contract. A plaintiff is more likely to be successful in a suit for monetary losses associated with real estate transactions or remediation than in a suit for personal injury. To avoid liability, the radon technologist will want to keep aware of the state of the art; use standard protocols; carefully supervise employees; take all technical precaution; and get legal advice in contracting. The author should also adhere to applicable federal, state, or local regulations. Disclosing the limits of measurement procedures and emphasizing the importance of maintaining standardized environmental conditions in the building are important. Since it is extremely difficult for an individual to get adequate professional liability insurance at a reasonable price, radon technologists should cooperate, perhaps through their professional societies, to negotiate the best possible insurance policies

  16. Lung scintigraphy; Centellograma pulmonar

    Energy Technology Data Exchange (ETDEWEB)

    Dalenz, Roberto

    1994-12-31

    A review of lung scintigraphy, perfusion scintigraphy with SPECT, lung ventilation SPECT, blood pool SPECT. The procedure of lung perfusion studies, radiopharmaceutical, administration and clinical applications, imaging processing .Results encountered and evaluation criteria after Biello and Pioped. Recommendations and general considerations have been studied about relation of this radiopharmaceutical with other pathologies.

  17. A health survey of radiologic technologists

    International Nuclear Information System (INIS)

    Boice, J.D. Jr.; Mandel, J.S.; Doody, M.M.; Yoder, R.C.; McGowan, R.

    1992-01-01

    A health survey of more than 143,000 radiologic technologists is described. The population was identified from the 1982 computerized files of the American Registry of Radiologic Technologists, which was established in 1926. Inactive members were traced to obtain current addresses or death notifications. More than 6000 technologists were reported to have died. For all registrants who were alive when located, a detailed 16-page questionnaire was sent, covering occupational histories, medical conditions, and other personal and lifestyle characteristics. Nonrespondents were contacted by telephone to complete an abbreviated questionnaire. More than 104,000 responses were obtained. Most technologists were female (76%), white (93%), and employed for an average of 12 years; 37% attended college, and approximately 50% never smoked cigarettes. Radiation exposure information was sought from employer records and commercial dosimetry companies. Technologists employed for the longest times had the highest estimated cumulative exposures, with approximately 9% with exposures greater than 5 cGy. There was a high correlation between cumulative occupational exposure and personal exposure to medical radiographs, related, in part, to the association of both factors with attained age. It is interesting that 10% of all technologists allowed others to practice taking radiographs on them during their training. Nearly 4% of the respondents reported having some type of cancer, mainly of the skin (1517), breast (665), and cervix (726). Prospective surveys will monitor cancer mortality rates through use of the National Death Index and cancer incidence through periodic mailings of questionnaires. This is the only occupational study of radiation employees who are primarily women and should provide new information on the possible risks associated with relatively low levels of exposure

  18. Experience in thyroid scintigraphy with Ethiopian patients

    International Nuclear Information System (INIS)

    Demena, Solomon

    1993-01-01

    One thousand and thirty seven thyroid scintigraphy examinations done in the Nuclear Medicine Unit of Tikur Anbesma Hospital, Addis Abeba, Ethiopia between December 1984 and September 1989 were analyzed to assess their diagnostic value. Thirty one percent of the referrals were to investigate clinically detectable solitary nodules, and of these fifty-six percent had ''cold'' nodules and twenty-three percent ''hot'' nodules. Fifty-five percent of the referrals for evaluation of goitre were for multi nodular goitres and twelve percent for diffuse. Thirteen of fifty-three cases with suspected ectopic thyroid tissue were positive. Little useful information was obtained in the evaluation of goitre. It is concluded that thyroid scintigraphy was an unnecessary investigation in the evaluation of goitres in euthyroid patients. Its primary role was in the investigation of the solitary nodule, ectopic thyroid tissue and the retresternal goitre. Therefore, only selected patients should be investigated with thyroid scintigraphy

  19. Method of pancreas scintigraphy

    International Nuclear Information System (INIS)

    Michele, E.; Schmidt, H.A.E.

    1976-01-01

    Scintigraphy of the pancreas is important because of a lack of simple internal and x-ray pancreas diagnostic examination methods, non-burdening to the patient, yet providing sufficient evidence. We conceived a double isotope subtraction method aimed at widespread application; financially, it should be within the range even of smaller nuclear medicine departments. A scanner is combined with double impulse processing and a subtraction unit (Picker Dualscanner) and an adapted x-ray unit with the x-ray tube aimed at the scan-field. Commercial sup(Se-75)selenium methionine is used for pancreas imagining. sup(TC-99m)colloidal sulphur is used as a liver indicator. After barium-brei application orally, an x-ray is taken of the gastro-intestinal tract, so as to be able to delineate the pancreas from other epigastric organs also able to accumulate methionine. The subtraction photoscan is then inscribed on this pre-exposed film without any shift of the patient. It is also possible to use two parallel films (x-ray/photoscan) and then to superposition them

  20. The Future of Sleep Technology: Report from an American Association of Sleep Technologists Summit Meeting

    Science.gov (United States)

    Brooks, Rita; Trimble, Melinda

    2014-01-01

    The American Association of Sleep Technologists (AAST) Board of Directors hosted a Sleep Technology Summit on September 21, 2013 with the goals of identifying changes in the delivery of diagnostic and treatment services to sleep disorders patients, predicting the impact on sleep technologists, identifying new roles for sleep technologists, and determining appropriate education to prepare technologists for the future. A carefully chosen panel of speakers focused on the business skills necessary to provide care cost effectively and the clinical skills that will be essential for the technologist of the future to help care for patients with sleep disorders. A group of selected leaders, educators, and industry professionals reviewed the current state of affairs and examined opportunities to sustain the profession and define the role of the sleep technologist of the future. Facilitated group discussions of these critical topics followed each session. There was a clear consensus that regulatory and economic pressures are changing the way sleep disorders patients are diagnosed and treated. Private insurers are requiring pre-authorization for laboratory sleep studies and are incentivizing home sleep testing for most patients suspected of obstructive sleep apnea. Reimbursement for home testing will be lower than for laboratory testing, and further reductions in overall reimbursement are anticipated. These factors will almost certainly reduce the need for technologists to perform laboratory diagnostic studies and pressure sleep centers to reduce payrolls. Remaining laboratory patients will have more complicated sleep disorders, have more comorbidity, and require a higher level of care than most of the patients currently tested in sleep centers. Testing these patients will require technologists with a higher level of training, experience, and sophistication. A second area of consensus was that the focus in medicine is changing from diagnosis to outcomes. New models of

  1. Study on development in professional work of radiological technologists

    International Nuclear Information System (INIS)

    Choi, Jong Hak; Kim, Chang Kyun; Kim, Won Chul; Kim, Seung Chul

    2006-01-01

    This study explored several agenda related to license system, education, professional work of radiological technologists (RTs) and a transition process of law for them to investigate a developmental strategy of RTs as a professional career. The results are as followings: 1. The national license system for RTs was started from 1965, 1965-1972 x-ray technicians (medical assistance), 1973-present (2006) radiotechnologist (medical technologist) since then. 2. The average pass ratio of national license examination (1965-2006) for RTs was 46.6%. The method, subjects and level of the examination should be improved. 3. The education term for RTs has been changed since 1963; 1963-1990 two year college. 1991-1999 three year college, 2000-2006 four year and three year college depending on universities and colleges. As of 2006, there are twelve 4-year universities and eighteen 3-year colleges. The total number of new students were 1,965. 4. The new developmental paradigm should be made for technology education of RTs corresponding to the development of medicine and science. 5. The qualification system of clinical specialists in radio-technology field needs to be operated not by the non-governmental body (The-Korean Radiological Technologists Association) but by the governmental body. 6. The vertical relationship among RTs, doctors and other medical workers should be rebuilt through the revision of law. Especially, doctors and dentists 'guidance authority' for RTs should be changed to 'request authority'. 7. The service extent of RTs should be extended in medical fields corresponding to professional work of RTs and a revision of the law needed for this situation

  2. Liver and spleen scintigraphy

    International Nuclear Information System (INIS)

    Devries, D.F.

    1988-01-01

    Since the introduction of liver and spleen scintigraphy in the early 1950s, it has undergone considerable changes, the most notable being technetium 99m sulfur colloid, the gamma camera, and single photon emission computed tomography (SPECT). What is the role f liver-spleen scintigraphy in this high-technology society? This chapter attempts to address this question by looking at the radiopharmaceuticals, the technique, and most importantly, the application of scintigraphy to the diagnosis of focal and diffuse hepatic and splenic disease

  3. Equine scintigraphy: assessment of the dose received by the personnel

    International Nuclear Information System (INIS)

    Clairand, I.; Bottollier, J.F.; Trompier, F.

    2003-01-01

    Following a request from the Permanent Secretary of the French Commission for Artificial Radioelements (CIREA) engaged to investigate a request for a licence related to a new scintigraphy unit dedicated to equidae, a dosimetric assessment concerning the personnel attending the examination was carried out. This scintigraphy unit depends on the Goustranville Centre for Imaging and Research on the Locomotive Diseases of Equidae (CIRALE) in the Calvados region. The dosimetric assessment was carried out for the different operators during the successive stages of the scintigraphic examination. Assuming 150 examinations per year, the annual equivalent dose to the fingers skin is 150 mSv maximum for the technologist and 2 mSv for the veterinary surgeon; the annual effective dose ranges from 0.15 to 0.45 mSv, depending on the operators. (authors)

  4. Scintigraphy In skeletal trauma

    African Journals Online (AJOL)

    1989-08-05

    Aug 5, 1989 ... of unsuspected fractures in a patient with multiple injuries. S Atr MedJ 1989; 76: ... of left lumbosacral pain, bone scintigraphy was performed a. Department of ... Moreover, the scan demonstrated seven rib. • •. SAMJ VOL.

  5. Skeleton scintigraphy in trauma

    International Nuclear Information System (INIS)

    Ansari, M.

    2002-01-01

    Skeletal trauma is common and presents both an opportunity and a problem in skeletal scintigraphy. The opportunity arises in the ability of skeletal scintigraphy to demonstrate abnormalities early after direct trauma. It is well recognized that the early detection of fractures in some sites cannot be reliably achieved by standard radiography, especially in the femoral neck and scaphoid bone. The problem comes in recognizing the effects of skeletal trauma when using skeletal scintigraphy for another purpose, such as the detection of metastatic disease. iatrogenic trauma to either the skeleton or soft tissues may be manifest scintigraphic ally. For example Craniotomy typically leaves a rim pattern at the surgical margin. Rib Retraction during thoracotomy can elicit periosteal reaction. Areas of the skeletal receiving curative levels of ionizing radiation (typically 4000 rads or greater) characteristically demonstrate decreased uptake within 6 months to 1 year after therapy. The generally high sensitivity of the skeletal scintigraphy seems to make it an ideal survey test in cases of suspected child abuse especially in which radiographs are unrevealing. Because of difficulties in obtaining a history of trauma from a preschool child or even eliciting a satisfactory description of the location and nature of the pain, skeletal scintigraphy provides a simple and reliable investigation in these children. Subtle trauma, such as that from stress fractures is often difficult to visualize on a plain radiograph. Skeletal scintigraphy is frequently positive at the time of clinical presentation. Skeletal scintigraphy is exquisitely sensitive to the remodeling process and typically shows abnormalities 1 to 2 weeks or more before the appearance of radiographic changes in stress fractures. The periosteal reaction can be visualized within hours of the injury. Insufficiency and fatigue fractures such as vertebral compression fracture, which is probably the most common consequence of

  6. Significance of thymic scintigraphy

    International Nuclear Information System (INIS)

    Baba, Hiromi; Oshiumi, Yoshihiko; Nakayama, Chikashi; Morita, Kazunori; Koga, Ichinari

    1978-01-01

    Thymic scintigraphy by 67 Ga-citrate and 75 Se-methionine was done on 6 cases of thymoma, and 5 cases of myasthenia gravis. Scan was positive on 5 of 6 cases of thymoma. All patients with malignant thymoma were positive. Among the 7 cases of myasthenia gravis, scintigrams revealed 2 thymomas and 1 hyperplasia on whom no thymic mass suspected. Thymic scintigraphy is useful examination when dealing with myasthenia gravis. (auth.)

  7. Equine scintigraphy: assessment of the dose received by the personnel; Scintigraphie equine: estimation de la dose recue par le personnel

    Energy Technology Data Exchange (ETDEWEB)

    Clairand, I.; Bottollier, J.F.; Trompier, F. [Institut de Radioprotection et de Surete Nucleaire IRSN, 92 - Fontenay aux Roses (France)

    2003-03-01

    Following a request from the Permanent Secretary of the French Commission for Artificial Radioelements (CIREA) engaged to investigate a request for a licence related to a new scintigraphy unit dedicated to equidae, a dosimetric assessment concerning the personnel attending the examination was carried out. This scintigraphy unit depends on the Goustranville Centre for Imaging and Research on the Locomotive Diseases of Equidae (CIRALE) in the Calvados region. The dosimetric assessment was carried out for the different operators during the successive stages of the scintigraphic examination. Assuming 150 examinations per year, the annual equivalent dose to the fingers skin is 150 mSv maximum for the technologist and 2 mSv for the veterinary surgeon; the annual effective dose ranges from 0.15 to 0.45 mSv, depending on the operators. (authors)

  8. Introduction to bone scintigraphy in malignant disease

    International Nuclear Information System (INIS)

    Vermey, J.

    1981-01-01

    For several years it has been accepted that oncology is a separate medical speciality. A team of oncologists of various disciplines is needed to cope with the complications of diagnosis and the difficulties in deciding on the best treatment. A decision-making tree is presented and the role of bone scintigraphy is explained. It is emphasized that closer cooperation between nuclear medicine and oncological specialists is necessary to obtain optimal interpretation of scintigraphic images. (Auth.)

  9. Nuclear medicine technology study guide

    CERN Document Server

    Patel, Dee

    2011-01-01

    Nuclear Medicine Technology Study Guide presents a comprehensive review of nuclear medicine principles and concepts necessary for technologists to pass board examinations. The practice questions and content follow the guidelines of the Nuclear Medicine Technology Certification Board (NMTCB) and American Registry of Radiological Technologists (ARRT), allowing test takers to maximize their success in passing the examinations. The book is organized by sections of increasing difficulty, with over 600 multiple-choice questions covering all areas of nuclear medicine, including radiation safety; radi

  10. Scintigraphy of renal transplant

    International Nuclear Information System (INIS)

    Ramackers, J.M.; Marrast, A.C.; Touraine, J.L.; Peyrin, J.O.

    1995-01-01

    Scintigraphy is useful for monitoring perfusion and function of renal transplant, as well as for diagnosing miscellaneous surgical. This non-invasive imaging technique, which uses no deleterious products, is an attractive alternative for patients. This is especially true for those patients in early post-transplant course, with immunity depression and often impairment of renal function. Otherwise, multiple indices with a large range of inter-patient values has not favoured a methodological and interpretative consensus. Furthermore, the poor specificity of renogram patterns does not allow for discrimination of all etiologies with only one scintigraphy. Nevertheless, follow-up with iterative scintigraphy may be helpful due to the high intra-patient reproducibility and to the early appreciate change of parameters, according to clinical and histological renal post-transplant outcome. (authors). 43 refs., 8 figs

  11. Bone scintigraphy for horses

    International Nuclear Information System (INIS)

    Jahn, Werner

    2010-01-01

    Scintigraphy (bone scan) is being used approximately since 1980 in the horse under general anaesthesia. With the construction of custom-made overhead gantries for gamma-cameras scintigraphy found widespread entry in big equine referral hospitals for bone-scanning of the standing horse. Indications for the use of a bone scan in the horse are inflammatory alterations in the locomotor apparatus. It is primarily used for diagnosis of lameness of unknown origin, suspect of stress fracture or hairline fracture and for horses with bad riding comfort with suspected painful lesions in the spine. (orig.)

  12. Cartilage Calcification Mimics Polychondritis in Bone Scintigraphy

    Directory of Open Access Journals (Sweden)

    Hasan Atilgan

    2013-04-01

    Full Text Available 58 year-old male patient with sternal pain was referred to our Nuclear Medicine Clinic for bone scintigraphy for 2.5 months. Markedly increased activity accumulation in the first bilateral sternocostal junction and increased activity accumulations in 3rd, 4th, 5th sternocostal junctions and lateral portion of inferior part of corpus sterni were seen in late static images without increased perfusion and hyperemia. Soft tissue density and lytic lesions were seen bilaterally in bilateral first costa, sternocostal joints and in right side of xiphoid in his 3D computed tomography (CT. Sternocostal lesions that were seen in bone scintigraphy and CT, was reported as normal in biopsy.

  13. Bone scintigraphy in children

    International Nuclear Information System (INIS)

    Mann, M.D.

    2004-01-01

    Full text: Bone scintigraphy is an integral part of the evaluation of bone disease in children. Common indications are suspected infection or inflammation, bone tumours and metastases, trauma and avascular necrosis. In all these disorders the sensitivity of scintigraphy is high. Gallium scintigraphy is often useful in children with clinical signs of infection not responding to treatment but the radiation dose is high. High quality images are essential. They depend on the full participation and co-operation of the child, parents and radiographers, the administration of appropriate analgesics, gentle but firm handling of the child, the injection of the appropriate amount of radiopharmaceutical, good positioning and immobilization, optimised equipment, and the acquisition of a suitable number of counts in an appropriate matrix size. Unless there are specific reasons for not doing so, we routinely perform two phase bone scintigraphy. This usually involves whole body blood pool and delayed images followed by static images of selected areas and, less often, pinhole images or SPECT. The interpretation of bone scan images in children requires knowledge of the age dependent differences in bone metabolism in the developing skeleton and the effect on the appearance of the maturing skeleton. (author)

  14. Bone scintigraphy in chondroblastoma

    Energy Technology Data Exchange (ETDEWEB)

    Humphry, A.; Gilday, D.L.; Brown, R.G.

    1980-11-01

    Scintigraphy in 3 patients with chondroblastoma showed that the tumors were hyperemic and avidly accumulated the radionuclide. These changes were also present in adjacent normal bone, but to a lesser degree. This suggests that radionuclide uptake in chondroblastoma is a function of the blood supply to the tumor rather than primary matrix extraction.

  15. Mortality study of Japanese radiological technologists

    International Nuclear Information System (INIS)

    Aoyama, T.; Futamura, A.; Yamamoto, Y.; Kato, H.; Sugahara, T.

    1983-01-01

    Japanese radiological technologists occupationally have chances of receiving low doses of ionizing radiation. A cohort study was started on them in 1981, since knowledge of the mortality and health of this population is pertinent to the evaluation of the risk from low-level exposure to radiation. A sampling of 2028 Japanese radiological technologists born before 1933 was followed from 1969 to 1982. All deaths were confirmed by checking copies of family registers and the causes were obtained from death certificates. The deaths observed within this group were compared with the expected number of deaths from major causes as estimated using the Japanese life table of 1975. The number of deaths from all causes, 131, was less than the expected 182.39, a difference that is statistically significant at the 1% level. The observed number of deaths from all malignant neoplasms, 51, was slightly larger than that of the expected 48.94, although the difference was not statistically significant. However, there was a significant excess of observed deaths from brain tumour and malignant neoplasms of male urogenital organs in comparison with expected deaths. Deaths from anaemia also significantly exceeded the expected level. The relationship between dose level and cause of death as adjusted by age at death and first year of employment was investigated using contingency table analysis. Accumulated occupational doses were estimated for 599 of the population of 2028. The relative risk of mortality ratios for all causes of death and cancer of all sites in four dose categories, <50, 50-74, 75-99 and 100+ rad, increased with dose but the statistical tests did not show any significant association. Observation and analysis should be continued to check our present findings further and obtain more complete data. (author)

  16. Technologist assessment of abnormalities in mammography

    International Nuclear Information System (INIS)

    Cheesman, A.

    2006-01-01

    Clinical images must meet the needs of the radiologist in order to serve the patient well. Learning to fully appreciate and assess the range of potentially pathological concerns is an important part of the role of the mammographer within the breast imaging team: being sure of a complete study that serves the purpose for the radiologist goes beyond pure technical appreciation. It now requires some clinical knowledge in order to ensure the area of concern is appropriately imaged, clearly seen and readily characterized by the radiologist. The technologist's role in ensuring appropriate imaging to clarify the extent of potential disease becomes an integral part of the criteria for excellence. Application of our basic analytical skills to our patient history and clinical images should now be an expectation of the mammographic technologist. Assessing and demonstrating clearly an area of concern on our images is a long way from diagnosing disease. What is missed or obscured on our clinical images is not analyzed by the radiologist. Therefore it is essential that we recognize a possible concern and know how to demonstrate it clearly. To recognize what is potentially a concern, it helps to know a little about where and how pathology within the breast develops. There are three basic areas of concern when checking our images, clinical assessment, calcifications and masses. The mammographer within today's modern team oriented department must have the advanced positioning and clinical skills to ensure the area of concern is appropriately imaged, clearly seen and able to be characterized by the radiologist. To properly assess and demonstrate potential problems for our medical partner, the radiologist, we must understand well the three areas of clinical and pathological change that exposes early breast cancer. (author)

  17. Comparison of whole body MR diffusion weighted imaging and skeletal scintigraphy in detecting bone metastasis

    International Nuclear Information System (INIS)

    Xu Xian; Ma Lin; Zhang Jinshan; Cai Youquan; Cheng Liuquan; Guo Xinggao; Xu Baixuan

    2008-01-01

    Objective: To evaluate the application of whole body MR diffusion weighted imaging (DWI) in the detection of bone metastasis using skeletal scintigraphy as the reference. Methods: Forty-two healthy volunteers and 38 patients with malignant tumors were enrolled in our study. All the patients received MR examination and skeletal scintigraphy within one week. MR examination was performed on GE signa 3.0T MR scanner using a build-in body coil. The skeletal system was divided into eight regions and the images of the whole body MR DWI and skeletal scintigraphy were reviewed to compare the two modalities patient by patient and region by region. The images were reviewed separately by two radiologists and two nuclear medicine physicians, who were blinded to the results of another imaging modality. Results: A total of 169 metastatic lesions in 69 regions of 30 patients were detected by whole body MR DWI while 156 lesions in 68 regions of 29 patients were identified by skeletal scintigraphy. There were two cases negative in scintigraphy but positive in whole body MR DWI and one case positive in scintigraphy only. There were eight lesions negative in scintigraphy but positive in whole body MR DWI, mainly located in the spine, pelvis and femur. Seven lesions were only detected by scintigraphy, mainly located in the skull, sternum, clavicle and scapula. Conclusion: The whole body MR DWI reveals excellent consistency with skeletal scintigraphy regarding bone metastasis, and the two modalities are complementary for each other. (authors)

  18. Bone scintigraphy for the investigation of lameness in small animals

    International Nuclear Information System (INIS)

    Bolln, G.; Franke, C.

    2010-01-01

    Bone scintigraphy has been used as a helpful method in diagnosing lameness in small animals. It is a sensitive, non-invasive method to evaluate bone lesions and orthopaedic disorders. It provides a functional image of the skeleton and thereby aiding in the localisation and diagnosing of obscure lameness. Compared to human medicine one important difference is the inability of an animal to characterize its pain to the examiner. Another difference is the lacking cooperation of an animal during bone scintigraphy. Before this background are shown on the basis of 5 examples the advantages, the method and the different indication of bone scintigraphy. The technique of this method arrives from a human medicine protocol of a 2-phase-bone-scintigraphy and has to be done under light anaesthesia, to avoid artefacts of movement during acquisitions. The authors are convinced that bone scintigraphy is a very useful and diagnostic method for evaluation of obscure lameness because it can give a quick diagnosis and aimed therapy. Therefore secondary changes and additional costs can be avoided for the animal and its owner. (orig.)

  19. Gated equilibrium bloodpool scintigraphy

    International Nuclear Information System (INIS)

    Reinders Folmer, S.C.C.

    1981-01-01

    This thesis deals with the clinical applications of gated equilibrium bloodpool scintigraphy, performed with either a gamma camera or a portable detector system, the nuclear stethoscope. The main goal has been to define the value and limitations of noninvasive measurements of left ventricular ejection fraction as a parameter of cardiac performance in various disease states, both for diagnostic purposes as well as during follow-up after medical or surgical intervention. Secondly, it was attempted to extend the use of the equilibrium bloodpool techniques beyond the calculation of ejection fraction alone by considering the feasibility to determine ventricular volumes and by including the possibility of quantifying valvular regurgitation. In both cases, it has been tried to broaden the perspective of the observations by comparing them with results of other, invasive and non-invasive, procedures, in particular cardiac catheterization, M-mode echocardiography and myocardial perfusion scintigraphy. (Auth.)

  20. Bone scintigraphy in craniosysnostosis

    International Nuclear Information System (INIS)

    Marchandise, X.; Dhellemmes, P.; Steinling, M.; Pellerin, P.; Dujardin, M.H.

    1981-01-01

    The scintigraphy of the skull has been studied in 49 children. This investigation is awkward to be performed and to be interpretated. The hyperactivity over a suture is far to be univocal. The hypoactivity over a suture can only be picked up under some circumstances. Abnormal parasagittal activities may be seen in craniostenosis. The interest of the scan in the establishment of the diagnosis or surgical indication seems to be limited above 5 years. Pronostic and physiopathologic interest needs more complete investigation [fr

  1. Selective coronary scintigraphy

    International Nuclear Information System (INIS)

    Gambini, D.-J.

    1975-01-01

    Isotopic techniques occupy a leading place amongst examinations practicable on coronary patients because of their reliability and the safety and simplicity of their use. The present work reviews the possible applications of selective coronary scintigraphy in pathology. After a brief discussion on scintigraphy, isotopic techniques for myocardium research, coronarography and other methods to study local myocardium perfusion the theoretical bases for the use of the exploration are studied, the techniques and methods employed are reported and the results discussed. Coronary scintigraphy consists of selective injection in the two coronary arteries previously catheterized during a coronarography, of two different populations of microspheres labelled with two physically short-lived indicators: 15μ 99m Tc-labelled serumalbumin microspheres, 10 to 15μ In-labelled siderophiline microspheres. Various studies have shown the complete harmlessness of the exploration when certain precautions are taken regarding the size and number of the spheres. The microspheres disperse into the downstream arterial territory proportionally to the number of capillaries present in the different parts of the irrigated region, and are temporarily stopped in the precapillaries. The preparation of the different images needed to interpret the Face and OAG examination for the left coronary, then for the right coronary, is carried out at the end of the coronarography and lasts about 45 minutes. It is also possible by selective injection in the aorta-coronary bridges to judge their functional condition by observation of the regions they irrigate. 56 patients of the Necker hospital cardiological clinic have been examined [fr

  2. Medicines

    Science.gov (United States)

    Medicines can treat diseases and improve your health. If you are like most people, you need to take medicine at some point in your life. You may need to take medicine every day, or you may only need to ...

  3. Sleep technologists educational needs assessment: a survey of polysomnography, electroneurodiagnostic technology, and respiratory therapy education program directors.

    Science.gov (United States)

    Wells, Mary Ellen; Vaughn, Bradley V

    2013-10-15

    In this study, we assessed the community and educational needs for sleep technologists by surveying program directors of nationally accredited polysomnography, electroneurodiagnostic technology, and respiratory care educational programs. Currently, little is known about our educational capacity and the need for advanced degrees for sleep medicine technical support. A questionnaire was developed about current and future community and educational needs for sleep technologists. The questionnaire was sent to directors of CAAHEP-accredited polysomnography and electroneurodiagnostic technology programs (associate degree and certificate programs), and directors of CoARC-accredited respiratory therapy associate degree and bachelor degree programs (n = 358). Qualitative and quantitative data were collected via an internet survey tool. Data analysis was conducted with the IBM SPSS statistical package and included calculating means and standard deviations of the frequency of responses. Qualitative data was analyzed and classified based on emerging themes. One hundred seven of 408 program directors completed the survey. Seventy-four percent agreed that demand for qualified sleep technologists will increase, yet 50% of those surveyed believe there are not enough educational programs to meet the demand. Seventy-eight percent of those surveyed agreed that the educational requirements for sleep technologists will soon increase; 79% of those surveyed believe sleep centers have a need for technologists with advanced training or specialization. Our study shows educators of associate and certificate degree programs believe there is a need for a bachelor's degree in sleep science and technology.

  4. Malaysian aviation technologist promotion to managerial role: an empirical overview

    Science.gov (United States)

    Liew, C. L.; Abu Talib, A. R.; Jacobs, R. L.

    2016-10-01

    The Malaysian aviation industry has continued to march forward. With a turnover of RM23.7 billion in 2013, it is expected to grow higher especially after the Malaysian national aerospace blueprint was launched in 2015. The aviation related organizations currently have a workforce of approximately 13500. These organizations need to be managed by competent managers who have a strong background of technologist. Aviation technologist is one of the key components in the aviation maintenance industry as they are the future managers charged with the responsibility to ensure continuation of the organization's objectives and culture. The technologist role and manager's role are somehow different. The promotion of technologist to managerial roles is quite common but whether the technologist is able to take up managerial role effectively is yet to be fully understood. It is quite common that there was insufficient training for the technologist before being promoted to take up management roles. The purpose of this paper is to give an overview of the role of technologists and managers in professional services industries such as MRO and to understand that there is a need within the industry to re-look into the perspective of a proper training to prepare them to take up management roles effectively.

  5. The role of learning technologists in supporting e-research

    Directory of Open Access Journals (Sweden)

    Susi Peacock

    2009-12-01

    Full Text Available This article explores how the role of learning technologists, a professional group that has emerged during the last 15 to 20 years, may be diversifying to include supporting e-research. It contributes to the current debate about the emerging profession and the roles it should play in contemporary higher education. Previous studies have shown that, typically, the profession's role has focussed almost exclusively on curriculum development; traditionally, learning technologists work with students and tutors to enhance the learning environment with technology. This article presents two case studies of PhD research that used a standard e-learning tool, the virtual learning environment (VLE, to conduct focus groups online. The case studies demonstrate the expert role of the learning technologist in supporting researchers to make informed decisions about whether and how to use e-learning tools to conduct qualitative e-research. The learning technologist advised on the potential advantages and limitations of using the VLE for research and fostered collaborative, working relationships with the researchers, acquiring extensive background knowledge about their projects. This required the learning technologist to draw upon her own experience with research into e-learning and on her professional experience gained from supporting curriculum developments. It is suggested that many learning technologists could extend their roles, transferring their knowledge to include supporting e-research. A more inclusive model of the learning technologist's role in academia could help address the potential polarisation of the profession into researchers and practitioners.

  6. Myocardial scintigraphy with thallium-201

    Energy Technology Data Exchange (ETDEWEB)

    Lichte, H [Zentralkrankenhaus Gauting (Germany, F.R.). Nuklearmedizinische Abt.

    1977-04-01

    Myocardial scintigraphy with /sup 201/thallium is a non-invasive method for detection of myocardial infarction and coronary heart disease. Redistribution-analysis as a sequential-scintigraphy of an exercise-scan permits to distinguish between myocardial scars and coronary vessel disease.

  7. Machine learning improves the accuracy of myocardial perfusion scintigraphy results

    International Nuclear Information System (INIS)

    Groselj, C.; Kukar, M.

    2002-01-01

    Objective: Machine learning (ML) an artificial intelligence method has in last decade proved to be an useful tool in many fields of decision making, also in some fields of medicine. By reports, its decision accuracy usually exceeds the human one. Aim: To assess applicability of ML in interpretation of the stress myocardial perfusion scintigraphy results in coronary artery disease diagnostic process. Patients and methods: The 327 patient's data of planar stress myocardial perfusion scintigraphy were reevaluated in usual way. Comparing them with the results of coronary angiography the sensitivity, specificity and accuracy of the investigation were computed. The data were digitized and the decision procedure repeated by ML program 'Naive Bayesian classifier'. As the ML is able to simultaneously manipulate with whatever number of data, all reachable disease connected data (regarding history, habitus, risk factors, stress results) were added. The sensitivity, specificity and accuracy of scintigraphy were expressed in this way. The results of both decision procedures were compared. Conclusion: Using ML method, 19 more patients out of 327 (5.8%) were correctly diagnosed by stress myocardial perfusion scintigraphy. In this way ML could be an important tool for myocardial perfusion scintigraphy decision making

  8. Automatic quantitative renal scintigraphy

    International Nuclear Information System (INIS)

    Valeyre, J.; Deltour, G.; Delisle, M.J.; Bouchard, A.

    1976-01-01

    Renal scintigraphy data may be analyzed automatically by the use of a processing system coupled to an Anger camera (TRIDAC-MULTI 8 or CINE 200). The computing sequence is as follows: normalization of the images; background noise subtraction on both images; evaluation of mercury 197 uptake by the liver and spleen; calculation of the activity fractions on each kidney with respect to the injected dose, taking into account the kidney depth and the results referred to normal values; edition of the results. Automation minimizes the scattering parameters and by its simplification is a great asset in routine work [fr

  9. Gamma-scintigraphy

    International Nuclear Information System (INIS)

    Desgrez, H.A.

    1960-06-01

    Gamma-scintigraphy is a medical technique making it possible to fix the image of certain organs after the concentration in these of emitting radioactive products. It is already widely used in the case of the thyroid gland with iodine-132 by applying the isotope iodine 131. The study of the liver and gall bladder is carried out using colloidal gold 198 and Bengal pink marked with iodine 131. Serum albumin marked with iodine 131 makes it possible to study rachidian blockages. Other applications can already be foreseen in this direction. (author) [fr

  10. Radiation safety knowledge of medical center radiology technologists in southern Taiwan

    Energy Technology Data Exchange (ETDEWEB)

    Su Wen-Chuan; Huang Ying-Fong; Chen Cheng-Chung; Chang Pao-Shu [Kaohsiung Medical University, Taiwan (China)

    2000-05-01

    People who live in Taiwan are getting more and more afraid of radiation. Sometimes the phobia results from distorted knowledge. Radiology technologists, in one hand, are more well-educated in radiation and, in the other hand, have more chance to expose to radiation when they are operating radiation producing medical instruments in their daily life. So we are interested in whether they have enough knowledge to protect themselves. We pick up the radiology technology board examination to make the questionnaire for this study. The population is the radiology technologists who work at department of diagnostic radiology, of radiation therapy and nuclear medicine in medical centers. Statistics is then used to see the relationship between knowledge and the factors including gender, age and career period. Based on statistics, we find out that there is significant correlation between the knowledge with age or education level. Elder or lower education level ones has worse knowledge. Continued education may be highly recommended for radiology technologists to avoid occupational radiation injury. (author)

  11. Radiation safety knowledge of medical center radiology technologists in southern Taiwan

    International Nuclear Information System (INIS)

    Su Wen-Chuan; Huang Ying-Fong; Chen Cheng-Chung; Chang Pao-Shu

    2000-01-01

    People who live in Taiwan are getting more and more afraid of radiation. Sometimes the phobia results from distorted knowledge. Radiology technologists, in one hand, are more well-educated in radiation and, in the other hand, have more chance to expose to radiation when they are operating radiation producing medical instruments in their daily life. So we are interested in whether they have enough knowledge to protect themselves. We pick up the radiology technology board examination to make the questionnaire for this study. The population is the radiology technologists who work at department of diagnostic radiology, of radiation therapy and nuclear medicine in medical centers. Statistics is then used to see the relationship between knowledge and the factors including gender, age and career period. Based on statistics, we find out that there is significant correlation between the knowledge with age or education level. Elder or lower education level ones has worse knowledge. Continued education may be highly recommended for radiology technologists to avoid occupational radiation injury. (author)

  12. Challenges before Women Scientists, Technologists & Engineers

    Indian Academy of Sciences (India)

    Sastry Indrakanti

    Women & Social responsibility. ➢ Women and Human Resource. Development & Management. ➢ Women and Agricultural & Rural. Development. ➢ Women & Technological Development. ➢ Women and Medicine & Health Care. ➢ Women and Education. ➢ Women and Population Growth. ➢ Women and Indian Economy.

  13. Information Technologist (The) - Vol 3, No 1 (2006)

    African Journals Online (AJOL)

    The Information Technologist. ... Labour market expectation of Nigerian computer science / Information Communication Technology (ICT) graduates · EMAIL ... An empirical comparison of Qbasic, FORTRAN, C, Pascal, C, Visual Basic and ...

  14. Desktop Publishing: A New Frontier for Instructional Technologists.

    Science.gov (United States)

    Bell, Norman T.; Warner, James W.

    1986-01-01

    Discusses new possibilities that computers and laser printers offer instructional technologists. Includes a brief history of printed communications, a description of new technological advances referred to as "desktop publishing," and suggests the application of this technology to instructional tasks. (TW)

  15. South African Association of Veterinary Technologists : congress abstracts

    Directory of Open Access Journals (Sweden)

    Editorial Office

    2010-05-01

    Full Text Available The following are abstracts of papers and posters presented at the 'Back to Basics Congress' of the South African Association of Veterinary Technologists (SAAVT, 15-16 September 2009, Batter Boys, Pretoria, South Africa.

  16. Myocardial perfusion scintigraphy: the evidence. A consensus conference organised by the British Cardiac Society, the British Nuclear Cardiology Society and the British Nuclear Medicine Society, endorsed by the Royal College of Physicians of London and the Royal College of Radiologists

    International Nuclear Information System (INIS)

    Underwood, S.R.; Anagnostopoulos, C.; Cerqueira, M.; Ell, P.J.; Flint, E.J.; Harbinson, M.; Kelion, A.D.; Al-Mohammad, A.; Prvulovich, E.M.; Shaw, L.J.; Tweddel, A.C.

    2004-01-01

    This review summarises the evidence for the role of myocardial perfusion scintigraphy (MPS) in patients with known or suspected coronary artery disease. It is the product of a consensus conference organised by the British Cardiac Society, the British Nuclear Cardiology Society and the British Nuclear Medicine Society and is endorsed by the Royal College of Physicians of London and the Royal College of Radiologists. It was used to inform the UK National Institute of Clinical Excellence in their appraisal of MPS in patients with chest pain and myocardial infarction. MPS is a well-established, non-invasive imaging technique with a large body of evidence to support its effectiveness in the diagnosis and management of angina and myocardial infarction. It is more accurate than the exercise ECG in detecting myocardial ischaemia and it is the single most powerful technique for predicting future coronary events. The high diagnostic accuracy of MPS allows reliable risk stratification and guides the selection of patients for further interventions, such as revascularisation. This in turn allows more appropriate utilisation of resources, with the potential for both improved clinical outcomes and greater cost-effectiveness. Evidence from modelling and observational studies supports the enhanced cost-effectiveness associated with MPS use. In patients presenting with stable or acute chest pain, strategies of investigation involving MPS are more cost-effective than those not using the technique. MPS also has particular advantages over alternative techniques in the management of a number of patient subgroups, including women, the elderly and those with diabetes, and its use will have a favourable impact on cost-effectiveness in these groups. MPS is already an integral part of many clinical guidelines for the investigation and management of angina and myocardial infarction. However, the technique is underutilised in the UK, as judged by the inappropriately long waiting times and by

  17. Study of lone working magnetic resonance technologists in Western Australia

    Directory of Open Access Journals (Sweden)

    Tracy Anne Dewland

    2013-12-01

    Full Text Available Objectives: It is recommended that magnetic resonance (MR technologists should not work alone due to potential occupational health risks although lone working is legally acceptable. The objective of this study was to investigate the current situation of lone working MR technologists in Western Australia (WA and any issue against the regulations. Materials and Methods: A questionnaire regarding the issues of occupational health of lone working MR technologists was developed based on relevant literature and distributed to WA MR technologists. Descriptive (percentage of frequency, mean and standard deviation and inferential statistics (Fisher's exact, Chi2 and t tests, and analysis of variance were used to analyze the responses of the yes/no, multiple choice and 5 pt scale questions from the returned questionnaires. Results: The questionnaire response rate was 65.6% (59/90. It was found that about half of the MR technologists (45.8%, 27/59 experienced lone working. The private magnetic resonance imaging (MRI centers were more likely to arrange technologists to work alone (p < 0.05. The respondents expressed positive views on issues of adequacy of training and arrangement, confidence and comfort towards lone working except immediate assistance for emergency (mean: 3. Factors of existence of MRI safety officer (p < 0.05 and nature of lone working (p < 0.001-0.05 affected MR technologists' concerns. Conclusions: Lone working of MR technologists is common in WA especially in private centers. The training and arrangement provided seem to be adequate for meeting the legal requirements. However, several areas should be improved by the workplaces including enhancement on immediate emergency assistance and concern relief.

  18. Indications and value of bone scintigraphy in comparison to magnetic resonance imaging (MRI)

    International Nuclear Information System (INIS)

    Haug, A.; Hacker, M.; Weiss, M.; Hahn, K.; Pfluger, T.

    2006-01-01

    With increasing use of cross-sectional imaging (CT/MRI) in radiology as well as PET and PET/CT in nuclear medicine, remaining indications for bone scintigraphy are in question. Recently introduced whole-body MRI represents an attractive alternative to bone scintigraphy, as MRI is additionally able to assess lesions that are limited to bone marrow and are located extraosseously. In this overview, indication-related strengths and limitations of MRI and bone scintigraphy are presented and discussed. Furthermore, complementary use of both modalities for special clinical questions is demonstrated. (orig.)

  19. Guidelines for bone scintigraphy in children

    International Nuclear Information System (INIS)

    Hahn, K.; Fischer, S.; Gordon, I.; Mann, M.; Piepsz, A.; Olivier, P.; Sixt, R.; Velzen, J. van

    2000-01-01

    The guidelines are intended to help nuclear medical teams in their daily routine. The guidelines give information relating to indications, performance of examinations, analysis and interpretation of the diagnostic results. The guidelines should be applied in the context of adopted basic quality criteria in nuclear medicine, requirements of the German radiation protection ordinance, as well as the regulatory codes for radiation protection in the medical field. The guidelines express the opinions of the Paediatric Committee of the EANM and hence focus on compliance with the relevant European standards in nuclear medicine. In order to enhance the specificity of results obtained with a bone scintigraphy, the interpretation of the results should be based on combined analysis with information drawn from X-rays. (orig./CB) [de

  20. Analysis of Personal Dosimetry for Nuclear Medicine Staff in Ten-Year Period

    International Nuclear Information System (INIS)

    Poropat, M.; Dodig, D.; Ciglar, M.; Tezak, S.

    2011-01-01

    The aim of this study was to assess the value of personal dosimetry for nuclear medicine personnel in our department in a ten-year period. We have analyzed personal doses for 80 employees in nuclear medicine in a ten year period that we divided into two five year periods (from 2000 to 2004 and from 2005 to 2009). The personnel was dived into 8 groups according to their working assignments due to different radiation exposure from various radioisotopes in different wards in nuclear medicine: nuclear medicine specialists, technologists in scintigraphy ward, personnel of physics ward, ward for radiochemistry and radioimmunology, clinical ward and ultrasound ward, cleaning personnel, administrative personnel. We have compared average dose per person in particular ward in two five year periods. All doses for all personnel were in the permissible limits prescribed by the authorities. Higher average dose per person in a first five year period was detected in two wards, scintigraphy ward and ward for radiochemistry and radioimmunology due to the nature of their working assignments (preparation and application of radiopharmaceuticals, contact with patients who have received radiopharmaceutical). The decrease in the average dose per person was noticed in a second five-year period, especially in the wards with personnel that had no prior education in ionizing radiation protection. The decrease of dose was from 7.5 % to 84.2 %. We think that the decrease of average dose per person in a second five-year period was not only the result of the increased personal protection measures but also the result of continuing education of nuclear medicine personnel that is obligatory by the Law for ionizing radiation protection from year 1999, and the results from a ten-year period show its positive effect on radiation protection. (author)

  1. Pediatric digital radiography education for radiologic technologists: current state

    International Nuclear Information System (INIS)

    Morrison, Gregory; Culbertson, John; Carbonneau, Kira; John, Susan D.; Goske, Marilyn J.; Smith, Susan N.; Charkot, Ellen; Herrmann, Tracy

    2011-01-01

    Digital radiography (DR) is one of several new products that have changed our work processes from hard copy to digital formats. The transition from analog screen-film radiography to DR requires thorough user education because of differences in image production, processing, storage and evaluation between the forms of radiography. Without adequate education, radiologic technologists could unknowingly expose children to higher radiation doses than necessary for adequate radiograph quality. To evaluate knowledge about image quality and dose management in pediatric DR among radiologic technologists in the U.S. This communication describes a survey of 493 radiologic technologists who are members of the American Society of Radiologic Technologists (ASRT) and who evaluated the current state of radiological technologist education in image quality and dose management in pediatric DR. The survey included 23 survey questions regarding image acquisition issues, quality assurance, radiation exposure and education in DR of infants and children. Radiologic technologists express many needs in areas of training and education in pediatric DR. Suggested improvements include better tools for immediate feedback about image quality and exposure, more information about appropriate technique settings for pediatric patients, more user-friendly vendor manuals and educational materials, more reliable measures of radiation exposure to patients, and more regular and frequent follow-up by equipment vendors. There is a clear and widespread need for comprehensive and practical education in digital image technology for radiologic technologists, especially those engaged in pediatric radiography. The creation of better educational materials and training programs, and the continuation of educational opportunities will require a broad commitment from equipment manufacturers and vendors, educational institutions, pediatric radiology specialty organizations, and individual imaging specialists. (orig.)

  2. Osseous scintigraphy and auxiliary graft

    International Nuclear Information System (INIS)

    Khelifa, F.; Siles, S.; Puech, B.

    1992-01-01

    The scintigraphy could be a good way to survey the osseous graft: three cases are studied in which were recognized the presence of a graft, surinfection, graft lysis, pseudo-arthrosis, algodystrophy. 8 refs., 5 figs

  3. RI scintigraphy in myasthenia gravis

    International Nuclear Information System (INIS)

    Kuroda, Yoshikazu; Miyamoto, Mariko; Maki, Masako; Yamazaki, Toshiro.

    1982-01-01

    35 cases of myasthenia gravis were studied with RI scintigraphy. 67 Ga-citrate was used in 34 patients and 76 Se-selenomethionine in 5 patients for thymus scintigraphy. RI scintigram was negative in non-tumorous thymus, regardless of the severity of illness and it was positive in seven of nine patients with thymomas. RI accumulation in thymus was found both in benign and malignant thymomas. RI seems to accumulated in lymphocytic and mixed thymus more than epithelial type. (author)

  4. RI scintigraphy in myasthenia gravis

    Energy Technology Data Exchange (ETDEWEB)

    Kuroda, Yoshikazu; Miyamoto, Mariko (Tokyo Metropolitan Fuchu Hospital (Japan)); Maki, Masako; Yamazaki, Toshiro

    1982-10-01

    35 cases of myasthenia gravis were studied with RI scintigraphy. /sup 67/Ga-citrate was used in 34 patients and /sup 76/Se-selenomethionine in 5 patients for thymus scintigraphy. RI scintigram was negative in non-tumorous thymus, regardless of the severity of illness and it was positive in seven of nine patients with thymomas. RI accumulation in thymus was found both in benign and malignant thymomas. RI seems to accumulated in lymphocytic and mixed thymus more than epithelial type.

  5. Dynamic esophageal scintigraphy

    International Nuclear Information System (INIS)

    Reilley, J.J.; Malmud, L.S.; Fisher, R.S.; Applegate, G.; DeVegvar, M.L.

    1982-01-01

    Esophageal scintigraphy was developed in order to quantitatively evaluate esophageal transit in patients with a variety of esophageal disorders. The study is performed with orally administered technetium-99m sulfur colloid in water, using a gamma camera on-line to a digital computer. Esophageal transit is expressed as the percent emptying for each of the first 15-sec intervals for 10 min after an initial swallow and at 15-sec intervals after serial swallows. Esophageal transit is significantly decreased in patients with motor disorders of the esophagus, compared to normal controls. In patients with reflux esophagitis, esophageal transit was abnormal when the reflux disease was accompanied by abnormal motor function. The technique we describe is the first quantitative test of esophageal function; it is a useful, sensitive, scintigraphic technique for evaluation of esophageal transit

  6. Apparatus for hybid scintigraphy

    Energy Technology Data Exchange (ETDEWEB)

    Roux, G

    1975-07-17

    The hybrid scintigraphy device allows scintigrams to be recorded of the whole body in one single scan made parallel to the body. A single rod shaped sodium iodide crystal is used. One of its longitudinal faces is plane and transparent and is in optical contact with a transparent protection plate. The other longitudinal faces are dulled and coated with a light scattering layer of MgO or Al/sub 2/O/sub 3/. On one side of the crystal a collimator is installed for the incident gamma or X-radiation, on the transparent side there are a number of photomultipliers. They are optically coupled with the surface of the crystal by means of an interconnected light conductor. The outputs of the photomultipliers are combined with each other in resistance networks, summers or subtracters and a delay network and electronic circuits for time measurement, respectively.

  7. Impact of the prospective payment system on the delivery of nuclear medicine services

    International Nuclear Information System (INIS)

    Crucitti, T.W.; Pappas, V.M.

    1986-07-01

    The study evaluates the effect of the Medicare Prospective Payment System (PPS) on nuclear medicine technologists and services. Since 80% of nuclear medicine technologists work in hospitals, a large segment of the professionals would be affected by the new system. The survey was designed to assess the PPSs effect on nuclear medicine departments at the early implementation stage

  8. Prona positioning in patients submitted to myocardial perfusion scintigraphy

    International Nuclear Information System (INIS)

    Cunha, C.J.; Ferreira, F.C.L.; Dullius, M.A.; Souza, S.O.; Souza, D.N.

    2011-01-01

    The myocardium perfusion scintigraphy corresponds at the nuclear medicine to one of best diagnostic methods for myocardium diseases. However, artefacts generated by the diaphragmatic tissue can induce to false positive diagnostic when does not occurs association of the image in supine position with the prone position. Images acquired at the two positions were analysed and the evaluation of tomographic images were estimation and consequently, a more completed diagnostic

  9. Assessment of radiological technologist health condition by Todai health index

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Ham Gyum [Ansan College, Ansan (Korea, Republic of); Kim, Wha Sun [College of Medicine, Hanyang Univ., Seoul (Korea, Republic of)

    2001-04-01

    The purpose of this study was to examine the general health status of radiological technologists by using Todai Health Index(THI) that has been employed as a standard health assessment tool for a specific group. The subjects in this study were 800 radiological technologists who were working in clinics, hospitals and university hospitals in and around Seoul and in some provincial cities. A survey was conducted directly or by mail in June and July, 2001. And the response rate was 68%. Using THI, the following findings were acquired: 1. By gender, both male and female radiological technologists complained about multiple subjective symptom(I) the most, And the women made more significant complaint of eight items including irregular life. 2. By age group, the radiological technologists whose age ranged from 20 to 24 got higher marks in most of the items, including multiple subjective symptom(I) and symptoms related to eyes and skin. 3. For career, those who had worked for a year or less or for one to five years got higher marks in most of the items. 4. Concerning marital status, the unmarried people complained about many items more, and the married people's symptom was more associated with live scale(L). 5. By the type of medical institution, the radiological technologists in the university hospitals got higher marks in two items including aggressiveness(F), but those in the clinics complained about the others more. 6. Regarding a place of service, there were little differences between the radiological technologists in basement and on the ground.

  10. Assessment of radiological technologist health condition by Todai health index

    International Nuclear Information System (INIS)

    Kim, Ham Gyum; Kim, Wha Sun

    2001-01-01

    The purpose of this study was to examine the general health status of radiological technologists by using Todai Health Index(THI) that has been employed as a standard health assessment tool for a specific group. The subjects in this study were 800 radiological technologists who were working in clinics, hospitals and university hospitals in and around Seoul and in some provincial cities. A survey was conducted directly or by mail in June and July, 2001. And the response rate was 68%. Using THI, the following findings were acquired: 1. By gender, both male and female radiological technologists complained about multiple subjective symptom(I) the most, And the women made more significant complaint of eight items including irregular life. 2. By age group, the radiological technologists whose age ranged from 20 to 24 got higher marks in most of the items, including multiple subjective symptom(I) and symptoms related to eyes and skin. 3. For career, those who had worked for a year or less or for one to five years got higher marks in most of the items. 4. Concerning marital status, the unmarried people complained about many items more, and the married people's symptom was more associated with live scale(L). 5. By the type of medical institution, the radiological technologists in the university hospitals got higher marks in two items including aggressiveness(F), but those in the clinics complained about the others more. 6. Regarding a place of service, there were little differences between the radiological technologists in basement and on the ground

  11. An introduction to physics for radiologic technologists. Second edition

    International Nuclear Information System (INIS)

    Graham, B.; Seeram, E.

    1987-01-01

    This book covers the basic principles of physics for radiologic technologists, and includes new chapters on ultrasound and magnetic resonance imaging. Coverage includes magnetism, atoms and molecules, chemical elements, interactions with matter, radiation detectors, radiation exposure, light, the radiographic image in motion, image intensification, the x-ray image on film, processing radiographs, protection in diagnostic radiology, the x-ray circuit

  12. Lacrimal scintigraphy in the diagnosis of epiphora

    International Nuclear Information System (INIS)

    Hanna, I.T.; MacEwen, C.J.; Kennedy, N.

    1992-01-01

    The value of lacrimal scintigraphy in the assessment of nasolacrimal duct obstruction was determined by comparing the results with syringing in 67 patients (83 eyes). As expected, of 28 lacrimal drainage systems which were obstructed on syringing, 23 (82%) had abnormalities of tear drainage on scintigraphy. However, in 55 lacrimal drainage systems that were patent on syringing, 19 (35%) were normal, but in 36 (65%) abnormalities not apparent on syringing were detected on scintigraphy. Thus scintigraphy is a very useful technique in the assessment of nasolacrimal duct obstruction particularly in systems patent on syringing. Since the site of obstruction can be determined, lacrimal scintigraphy can facilitate the planning of the appropriate surgery. (author)

  13. [Desirable medical technologists in a community support hospital].

    Science.gov (United States)

    Takeda, Kyoko

    2008-07-01

    Recently, there have been marked advances in the technological strategies employed in medical examinations. The educational concept to nurture highly capable medical technologists is considered to be a priority issue by not only educators but also employers, even though the medical educational levels have markedly improved in every college and university. It is commonly acknowledged that the results of any examination in the clinical laboratory should be accurate and fed back to medical doctors as soon as possible. The business outline of medical technologists in our hospital is becoming more extensive because we act as a core hospital in the area, and so knowledge regarding many kinds of chemical and transfusion examinations is required in operations performed around the clock. Furthermore, medical doctors, clerical workers, nurses, and volunteers comprise a team of sophisticated workers in our hospital. To accomplish our daily work, character traits such as accuracy, honesty, perseverance, and ability to follow instruction manuals, are the most fundamental and valuable. To nurture a highly career-oriented medical technologist, we propose that the following should be focused on: self-responsibility, reduction of malpractices, economic profitability, brainstorming, education of subsequent generations, and the spirit of cooperativeness and reconciliation. Additionally, it is another basic requirement of competent medical technologists to learn to adapt to laboratory-based changes in their work throughout their career. In conclusion, how to adapt to any social demand and learn strategies in any era should be taught in college or university as well as after graduation because each hospital and institute has a different philosophy and requirements of newcomers. It is important for medical technologists and doctors to develop flexible ways of thinking, although we sometimes might accede to traditional ways.

  14. Scintigraphy of the cerebrospinal fluid

    International Nuclear Information System (INIS)

    Touya, E.; Perillo, W.; Paez, A.; Osorio, A.; Ferrando, R.; Lago, G.; Garcia Guelfi, A.; Ferrari, M.

    1977-01-01

    Eight years of experience in scintigraphy of cerebrospinal fluid (CSF) with 113 Insup(m)-colloid is reported. Two hundred cases are discussed. On the basis of the clinical diagnosis, the cases are divided into five groups: (1) spinal cord compression; (2) hydrocephalus of the adult and child; (3) control of extracranial CSF shunts; (4) CSF fistula; and (5) brain tumour. It is concluded that the radiopharmaceutical used has no limitations except in the study of the hydrocephalus of the adult. For those services remote from the production centres, it is a convenient option for CSF scintigraphy. (author)

  15. Current role of lung scintigraphy in pulmonary embolism

    International Nuclear Information System (INIS)

    Giordano, A.; Angiolillo, D. J.

    2001-01-01

    The pivotal role of lung scintigraphy in the diagnosis of pulmonary embolism (PE) has been questioned in recent years due to the introduction of spiral computed tomography. However, the scintigraphic results used for comparisons are often those of the authoritative PIOPED (Prospective Investigation of Pulmonary Embolism Diagnosis) study, carried out in the 1980s. Pulmonary scintigraphy has progressed from those years both in the methodological and interpretative fields, although perhaps too slowly. Results better than those of PIOPED's have been presented by study groups who used: 1) perfusion-only approach; 2) SPET imaging; 3) new interpretative criteria; 4) different prediction rules to integrate clinical and scintigraphic probabilities of PE. These advances are still insufficiently recognised by the nuclear medicine community, possibly due to a sort of PIOPED-based cultural globalisation. This paper reviews the actual advantages and limitations of nuclear medicine techniques, the diagnostic role of scintigraphy within the diagnostic algorithms proposed by international working groups and scientific societies and the results obtained from SPET imaging in the diagnosis of PE

  16. A parathyroid scintigraphy case study

    International Nuclear Information System (INIS)

    O'Leary, Desiree

    2005-01-01

    Background: There has been much debate concerning the most suitable protocol for parathyroid scintigraphy; the merits of various radiopharmaceuticals versus the correct imaging protocol to visualise both ectopic and anatomically placed adenomas against the various equipment choices have been debated. Aim: To demonstrate, through the use of a case study, the necessity of changing imaging protocols for parathyroid scintigraphy where a definitive imaging diagnosis is absent in the face of strong clinical suspicion. Method: Use is made of Tc99mMIBI, full field chest scintigraphy, a clearly defined imaging protocol and SPECT imaging to locate ectopic parathyroid tissue in a female patient with significant symptoms of parathyroid hyperfunction. Results: A single hyperfunctioning adenoma is located in the pre-carinal area of the mediastinum. Using a radioguided surgical technique the hyperfunctioning tissue is excised and confirmed by histopathology. Conclusion: Whilst a dramatic reduction in patient symptoms was not seen immediately in this patient, the symptoms of the illness have been subsiding since January 2003. This case study demonstrates the necessity of changing imaging protocols for parathyroid scintigraphy where a definitive imaging diagnosis is absent in the face of strong clinical suspicion

  17. Bone scintigraphy in children: trauma

    International Nuclear Information System (INIS)

    Harcke, H.T.

    1983-01-01

    The sensitivity of radionuclide imaging in identifying skeletal trauma in children has been established. Growth plates present a set of problems unique to pediatric studies and diagnotic accuracy is very technique dependent. Imaging for sports injuries and suspected child abuse has been productive. An expanding role for bone scintigraphy in the management of orthopedic problems post-trauma is developing [fr

  18. Interferin with thyroid scintigraphy: the effects of interferon alpha induced thyroid gland autoimmunity and dysfunction upon thyroid scintigraphy in patients with the hepatitis C virus

    International Nuclear Information System (INIS)

    Rome, S.P.; Karamoskos, P.; Schlicht, S.M.

    2003-01-01

    Full text: The incidence of hepatitis C virus (HCV) infection is increasing. Interferon alpha therapy is often used to treat patients who are HCV positive. Thyroid gland autoimmunity and dysfunction has been reported to occur with variable frequency during INF-alpha therapy in patients with the HCV. This study reviews the scintigraphic findings of thyroid scans in such patients in order to assess for the effects on thyroid scintigraphy. To our knowledge, there has been no comprehensive study of this important occurrence to date. There were a number of patients with the HCV being treated at our institution between 23/09/1996 and 09/08/2000. Some of them received INF-alpha therapy, certain were subsequently diagnosed with thyroid gland autoimmunity and/or dysfunction. Eight were imaged with thyroid scintigraphy and reviewed. The scintigraphic findings in the 8 patients fell into two broad categories; 4 demonstrated changes of Graves' disease, and 3 changes of thyroiditis (1 of these was sub-acute). One hypothyroid patient with anti-thyroglobulin antibodies had normal thyroid scintigraphy. Six patients were found to have antithyroid antibodies. One patient with thyroiditis tested negative to antithyroid antibodies. One patient was not tested for antithyroid antibodies. Interferon alpha induced thyroid gland autoimmunity and/or dysfunction can markedly affect the thyroid scintigraphic findings of patients with the hepatitis C virus. This hitherto undescribed occurrence on thyroid scintigraphy has important practical implications of which Nuclear Medicine Specialists need to be aware in order to correctly interpret thyroid scintigraphy studies in such patients. The clinical presentation and effects on imaging appearances are varied. The Nuclear Medicine Specialist can play a central role in establishing the causal link. Awareness of this occurrence enables the Nuclear Medicine Specialist to add value to the referral. This occurrence will become an increasingly common

  19. Thallium 201 Scintigraphy

    Science.gov (United States)

    McKillop, James H.

    1980-01-01

    The radioactive isotope thallium 201 behaves physiologically as a potassium analog, and when injected intravenously accumulates rapidly within the cells of many organs. Uptake of the isotope reflects both regional perfusion and sodium-potassium pump activity. The radionuclide emits 80 keV x-rays which are suitable for scintillation camera imaging. The main clinical application of 201TI scintigraphy has been in myocardial imaging. Abnormal uptake of the isotope results in a cold spot on the myocardial image. In patients with coronary artery disease, the differentiation of ischemic and infarcted myocardium is made by comparing images obtained after injecting the radionuclide at the peak of a maximal exercise test with those obtained after injection at rest. Abnormalities due to ischemia usually are seen only on the stress image whereas fixed defects in both rest and stress studies usually indicate areas of infarction or scarring. Some investigators believe that redistribution images obtained four to six hours after stress injection (without administering further 201TI) give the same information as a separate rest study. The sensitivity of stress imaging for detecting significant coronary disease is of the order of 80 percent to 95 percent, though computer processing of the images may be necessary to achieve the higher figure. The prediction of the extent of coronary disease from 201TI images is less reliable. An abnormal 201TI image is not entirely specific for coronary artery disease and the likelihood of an abnormal image being due to this diagnosis varies according to the clinical circumstances. The main clinical value of 201TI myocardial imaging is likely to be in the noninvasive screening of patients with atypical chest pain or with ambiguous findings on stress electrocardiographic tests. It has also proved useful in studying patients with variant angina or following a coronary bypass operation. It is doubtful whether the technique is clinically helpful in most

  20. Comparison of V/Q SPECT and planar V/Q lung scintigraphy in diagnosing acute pulmonary embolism

    DEFF Research Database (Denmark)

    Borgwardt, Henrik Gutte; Mortensen, Jann; Jensen, Claus Verner

    2010-01-01

    Planar ventilation/perfusion (V/Q) scintigraphy is currently the standard method for the diagnosis of pulmonary embolism (PE) in most nuclear medicine centers. However, recent studies have shown a superior sensitivity and specificity when applying V/Q single photon emission computed tomography...... (SPECT) in diagnosing PE. This study evaluated the diagnostic performance of three-dimensional V/Q SPECT in comparison with planar V/Q scintigraphy....

  1. Femoral chondrosarcoma discovered by SPECT-T.D.M. osseous scintigraphy; Chondrosarcome femoral decouvert par scintigraphie osseuse SPECT-TDM

    Energy Technology Data Exchange (ETDEWEB)

    Bourahla, K.; Nguyen, L.; Rolling, P.; Schott, A.; Di Salvo, R. [CLCC Paul-Strauss, Strasbourg, (France)

    2009-05-15

    Objectives: the SPECT/T.D.M. imaging can allow a quick diagnosis direction by the concomitant exploitation of scintigraphy data and morphological data brought by the T.D.M.. We present the case of a chondrosarcoma diagnosed in nuclear medicine thanks to the exploitation of the data supplied by the SPECT/T.D.M. that allowed to direct rapidly the later explorations while reducing the time of the patient coverage. Conclusions: A knowledge of the most characteristic morphological data allows to give some diagnosis at first sight during the scintigraphy explorations coupled SPECT/T.D.M. and this in the interest of the patient by reducing his coverage while including the nuclear doctor more broadly in some diagnosis approaches previously remote from his reach. (N.C.)

  2. Radiation effects on clinical examination data in Japanese radiological technologists

    International Nuclear Information System (INIS)

    Kondo, Hisayoshi; Okumura, Yutaka; Sugahara, Tsutomu; Aoyama, Takashi; Hashimoto, Tetsuaki; Yamamoto, Yoichi.

    1992-01-01

    Health survey for 1014 radiological technologists was undertaken in 10 districts in Japan. Estimated radiation doses were based on work duration, the status of radiation protection, X-ray equipments to be used, and exposure conditions. Two hundred and eighty-three technologists aged between 45 and 59 were enrolled in this study. Exposure doses ranged from 2 cGy to 337 cGy. According to exposure doses of either 40 cGy, smoking habits, and drinking habits, the subjects were classified into 7 groups. Clinical laboratory data, in addition to systolic and diastolic blood pressures, were analyzed. In comparing the sole effect of irradiation with that of smoking or drinking, the degree of irradiation effect was less than the other two factors. Smoking had a higher synergistic action than irradiation and drinking. (N.K.)

  3. Cancer incidence among radiologic technologists and nurses in Lithuania

    International Nuclear Information System (INIS)

    Smerdokiene, V.

    2000-01-01

    The retrospective cohort study of 'Cancer incidence among persons, working at ionizing radiation environment' was performed. The cohort consisted of 2034 persons (13.82% males and 86.18% females). Among them 475 were radiologists (doctors), 868 - radiologic technologists (all of them females) and 470 nurses (cleaners in radiology departments). The members of the cohort were followed -up retrospectively from 01.01.1978 until 31.12.1977. Standard Incidence Ratio for all cancers in the cohort of female radiologic technologists was 1,31 [0,90-1,85], of female nurses -1,99 [1,26-2,99]. The size of cohorts and follow-up period were too small for site - specific analysis of cancer incidence. (author)

  4. Occupational rdiation exposure and anthropometric indices among radiologic technologists

    Energy Technology Data Exchange (ETDEWEB)

    Um, Sun Bi; Moon, Eun Kyeong; Cha, Eun Shill; Lee, Won Jin [Dept. of Preventive Medicine, Korea University College of Medicine, Seoul (Korea, Republic of)

    2016-04-15

    Worldwide increase in the prevalence of abnormal anthropometric indices (i.e., body mass index (BMI), and waist circumference (WC)) are associated with increased risk of death and adverse health outcomes which causes great burden in public health. Studies on the association between radiation exposure and altered anthropometric indices reported both positive and negative associations in atomic bomb and childhood cancer survivors. We have initiated a radiologic technologists health study to investigate occupational radiation exposure and their health effects. Therefore, this study aims to investigate the association between occupational radiation dose with BMI and WC in radiologic technologists in South Korea. These results explain that occupational radiation exposure can possibly alter BMI and WC. Therefore, further study is required to verify the prospective causal effect of radiation exposure on anthropometric indices.

  5. Occuptional radiation exposures and thyroid cancer risk among radiologic technologists

    Energy Technology Data Exchange (ETDEWEB)

    Moon, Eun Kyeong; Lee, Won Jin [Korea University, Seoul (Korea, Republic of); Ha, Mina [Dankook University Seoul (Korea, Republic of); Kim, Jae Young [Keimyung University, Daegu (Korea, Republic of); Jun, Jae Kwan [National Cancer Center, Seoul (Korea, Republic of); Jin, Young Won [Korea Institute of Radiological and Medical Sciences, Seoul (Korea, Republic of)

    2016-04-15

    Medical radiation workers were among the earliest occupational groups exposed to external ionizing radiation due to their administration of a range of medical diagnostic procedures and accounted for 7.4 million worldwide in 2008. Ionizing radiation is the confirmed human carcinogen for most organ sites. The aims of the study is to evaluate the association between occupational practices including radiation exposure and thyroid cancer risk among radiologic technologists. We found no significant association between the risk of thyroid cancer and the majority of work practices among diagnostic radiation technologists in general. However workers performing fluoroscopy and interventional procedures showed increased risks although the lack of a clear exposure– response gradient makes it difficult to draw clear conclusions. Future studies with larger sample size and detailed work practices implementation are needed to clarify the role of occupational radiation work in thyroid cancer carcinogenesis.

  6. Challenges for Educational Technologists in the 21st Century

    Directory of Open Access Journals (Sweden)

    Robin Mayes

    2015-09-01

    Full Text Available In 1972, Edsger Dijkstra claimed that computers had only introduced the new problem of learning to use them effectively. This is especially true in 2015 with regard to powerful new educational technologies. This article describes the challenges that 21st century educational technologists are, and will be, addressing as they undertake the effective integration of new technologies into K-12 educational systems and learning environments. The expanding Internet, ever more powerful mobile devices, and other innovations make the task of designing effective formal and informal learning challenging, especially in light of the high rate of change in these new technologies. While these technologies introduce many benefits, they are also causing serious threats to system security and personal privacy. Furthermore, as these technologies continue to evolve, ethical issues such as equal access to resources become imperative. Educational technologists must expand their forward-thinking leadership and planning competencies so as to ensure effective use of new technologies.

  7. Occuptional radiation exposures and thyroid cancer risk among radiologic technologists

    International Nuclear Information System (INIS)

    Moon, Eun Kyeong; Lee, Won Jin; Ha, Mina; Kim, Jae Young; Jun, Jae Kwan; Jin, Young Won

    2016-01-01

    Medical radiation workers were among the earliest occupational groups exposed to external ionizing radiation due to their administration of a range of medical diagnostic procedures and accounted for 7.4 million worldwide in 2008. Ionizing radiation is the confirmed human carcinogen for most organ sites. The aims of the study is to evaluate the association between occupational practices including radiation exposure and thyroid cancer risk among radiologic technologists. We found no significant association between the risk of thyroid cancer and the majority of work practices among diagnostic radiation technologists in general. However workers performing fluoroscopy and interventional procedures showed increased risks although the lack of a clear exposure– response gradient makes it difficult to draw clear conclusions. Future studies with larger sample size and detailed work practices implementation are needed to clarify the role of occupational radiation work in thyroid cancer carcinogenesis.

  8. Clinical laboratory technologist professional development in Camagüey

    Directory of Open Access Journals (Sweden)

    Mercedes Caridad García González

    2015-05-01

    Full Text Available The paper describes the results of research aimed at assessing the current conditions related to clinical laboratory technologist professional development. A descriptive cross study covering the period between November 2013 and January 2014 is presented. Several techniques for identifying and hierarchically arranging professional developmental related problems were used to study a sample at the Faculty of Health Technology of the Medical University “Carlos Juan Finlay”. The study involved heads of teaching departments and methodologists of health care technology specialties; moreover a survey and a content test were given graduate clinical laboratory technicians. The authors reached at the conclusion that clinical laboratory technologist professional development is limited and usually underestimate the necessities and interests of these graduates. Likewise, a lack of systematization and integration of the biomedical basic sciences contents and the laboratory diagnosis is noticeable.

  9. Quality Assurance in Custom Dental Devices: A Technologist's Perspective.

    Science.gov (United States)

    Griffin, Anthony

    2017-12-01

    Manufacturing of custom-made dental devices such as removable dentures, fixed prosthodontics and orthodontics are subject to the requirements of the Medical Devices Directive (MDD). Many dental laboratories often enhance these requirements by implementing quality assurance procedures that then provide enhanced consistency. this paper provides a dental technologist's view of some of the systems currently being used in dental laboratories to provide a quality assured product and associated issues.

  10. Medical imaging physics teaching to radiologic technologists in Kuwait

    International Nuclear Information System (INIS)

    Ballani, Nasser S.; Sukkar, Ibrahim

    2005-01-01

    Physics of X-radiation and medical imaging is an important subject (among others) in the education and preparation of skilful and problem-solving radiologic technologists. This short communication gives a brief explanation of the physics courses at the Department of Radiologic Science, Faculty of Allied Health Sciences, Kuwait University, Kuwait. The methods of teaching and assessing the physics courses offered to radiographers as part of their education are also explained

  11. Knowledge and Attitude of Radiology Technologists Towards Cardiopulmonary Resuscitation

    Directory of Open Access Journals (Sweden)

    Behroozi

    2015-04-01

    Full Text Available Background The number of casualties and critically ill patients referred to radiology departments increased during the past decade, which caused the risk of cardiac arrest in radiology departments to increase considerably. Objectives The current study aimed to evaluate the knowledge and attitude of radiology technologists regarding Cardiopulmonary Resuscitation (CPR. Patients and Methods After approval a cross sectional study was designed. Ninety five radiology technologists (male and female were selected in four tertiary referral hospitals in Ahvaz, Iran. Accordingly, 87 radiologic technologists of which agreed to participate in the study. The researchers developed a questionnaire. The questionnaire consisted of three distinct sections including demographic data, attitude, and technical knowledge questions. Reliability of the technical knowledge questions were evaluated using Cronbach’s alpha (76%. Data collection was performed using interview method. Results Of the total 87 questionnaires, one was incomplete. None of the participants had attended a training program since employment. The average scores of attitude towards CPR and technical knowledge were 80 ± 8.9 and 8.8 ± 2.3, respectively. A correlation was observed between age and work experience (r = 0.866, P ≤ 0.0001, age and technical knowledge (r = 0.380, P ≤ 0.0001, work experience and technical knowledge (r = 0.317, P = 0.003, and attitude and technical knowledge (r = 0.397, P ≤ 0.0001. Also a correlation was observed between work experience and attitude (r = 0.385, P ≤ 0.0001. No significant difference was observed between male and female subjects’ technical knowledge (P ≥ 0.05 and attitude (P ≥ 0.05. Conclusions It can be concluded that, although the attitude of participants towards CPR was positive in general, their technical knowledge was poor. This finding should urge decision-makers to consider delivering in-service training courses to radiology technologists

  12. More about ... Nuclear medicine

    African Journals Online (AJOL)

    Thyroid scintigraphy. In neonates with hypothyroidism detected on neonatal screening and confirmed by subsequent testing, a radionuclide thyroid scan should be performed as soon as possible. It must be undertaken in all nuclear medicine departments as a matter of urgency. Any delay in treatment should be avoided.

  13. Scintigraphy of spinal disorders in adolescents

    Energy Technology Data Exchange (ETDEWEB)

    Mandell, G.A. (Dept. of Medical Imaging, Alfred I. duPont Inst., Wilmington, DE (United States)); Harcke, H.T. (Dept. of Medical Imaging, Alfred I. duPont Inst., Wilmington, DE (United States))

    1993-08-01

    Bone scintigraphy in adolescents is useful in helping to differentiate between developmental (atypical lumbar Scheuermann disease), infectious (discitis, osteomyelitis), neoplastic (osteoid osteoma, osteoblastoma), and traumatic (occult fractures, spondylolysis, pseudoarthrosis) disease of the spine. Double-phase (blood pool, delayed images) scintigraphy can characterize the pattern (i.e., linear in fracture, ovoid in nidus of osteoid osteoma). Single-photon emission computed tomography (SPECT) can be helpful in detecting the subtle presence of stress reaction (spondylolyses) not noted on routine planar scintigraphy and radiography. Bone scintigraphy is most beneficial when correlated with other imaging modalities in refining the diagnosis of spinal diseases. (orig.)

  14. Scintigraphy of spinal disorders in adolescents

    International Nuclear Information System (INIS)

    Mandell, G.A.; Harcke, H.T.

    1993-01-01

    Bone scintigraphy in adolescents is useful in helping to differentiate between developmental (atypical lumbar Scheuermann disease), infectious (discitis, osteomyelitis), neoplastic (osteoid osteoma, osteoblastoma), and traumatic (occult fractures, spondylolysis, pseudoarthrosis) disease of the spine. Double-phase (blood pool, delayed images) scintigraphy can characterize the pattern (i.e., linear in fracture, ovoid in nidus of osteoid osteoma). Single-photon emission computed tomography (SPECT) can be helpful in detecting the subtle presence of stress reaction (spondylolyses) not noted on routine planar scintigraphy and radiography. Bone scintigraphy is most beneficial when correlated with other imaging modalities in refining the diagnosis of spinal diseases. (orig.)

  15. Bone scintigraphy in drug addiction

    Energy Technology Data Exchange (ETDEWEB)

    Lopez-Majano, V.; Miskew, D.; Sansi, P.

    1981-01-01

    In 22 drug addicts, the clinical diagnosis of osteomyelitis and/or septic arthritis was suspected because of symptoms of sepsis and pain in various locations. All patients underwent bone scintigraphy with 17-20 mCi of /sup 99/sup(m)Tc labeling either pyrophosphate or methylene diphosphonate. Whole body and spot scans located the area of disease in most patients. This permitted biopsy of the affected area when the pathogen recurs. One of the two patients whose scintigrams were normal was on adequate treatment before the bone scintigram and the other was on oxacillin. Radiographs of the affected areas were normal, which indicates bone scintigraphy should be preferred to radiography in the early diagnosis of osseous infections.

  16. Bone scintigraphy in drug addiction

    International Nuclear Information System (INIS)

    Lopez-Majano, V.; Miskew, D.; Sansi, P.

    1981-01-01

    In 22 drug addicts, the clinical diagnosis of osteomyelitis and/or septic arthritis was suspected because of symptoms of sepsis and pain in various locations. All patients underwent bone scintigraphy with 17-20 mCi of 99 sup(m)Tc labeling either pyrophosphate or methylene diphosphonate. Whole body and spot scans located the area of disease in most patients. This permitted biopsy of the affected area when the pathogen recurs. One of the two patients whose scintigrams were normal was on adequate treatment before the bone scintigram and the other was on oxacillin. Radiographs of the affected areas were normal, which indicates bone scintigraphy should be preferred to radiography in the early diagnosis of osseous infections. (orig.) [de

  17. Bone scintigraphy in renal osteopathy

    International Nuclear Information System (INIS)

    Hermann, H.J.; Gahl, G.; Freie Univ. Berlin

    1976-01-01

    25 patients with chronic renal disease are investigated. In 16 cases with conservative treatment the bone scintigram showed pathological uptake according to the creatinine level, mainly in the joints of iliosacrum, hip, knee and ankles. In three patients increased uptake in the skull was found. The bone uptake found by scintigraphy was highly pronounced in the patients treated by dialysis. The most frequently involved regions were the joints of iliocacrum and hip, facial cranium, skull, pelvis and metatarsus. The count-rate ratio of cranium to chest was significantly increased in 6 patients. The investigations 6 months later showed in 4 cases a further increase compared with the first values. Count-rates of the skull were found to be comparable to the highly increased uptake in Paget's disease. Bone scintigraphy is a suitable method to estimate semiquantitatively the bone turnover in renal disease. (orig.) [de

  18. Extraosseus enrichments in bone scintigraphy

    International Nuclear Information System (INIS)

    Jochens, R.; Schumacher, T.; Amthauer, H.; Wolter, M.; Stock, W.; Stroszczynski, C.; Moersler, J.P.; Eichstaedt, H.

    1996-01-01

    Extraosseus enrichments are common findings in bone scintigraphy. Main causes are artifacts by skin or cloth contamination, paravenous and subcutaneous injection. Physical examination, removal of cloths, skin cleaning or further images in differing projections lead to the correct diagnosis artefact or extraosseous enrichments. Further on, extraosseous enrichments are seen in physiological variants. In different diseases extraosseous enrichments are common, especially in urinary tract, liver and extremities. Further diagnostics, e.g. conventional radiologic procedures, sonography and CT scans, have to be performed. In individual cases side results in bone scintigraphy lead to formerly unknown diagnosis, further diagnostic procedure is influenced decisively. Own cases show for example a cerebral apoplectic insult, formerly unknown liver metastasis or metastasis in extraosseous Ewings's sarcoma. (orig.) [de

  19. Bone scintigraphy in renal osteodystrophy

    International Nuclear Information System (INIS)

    de Graaf, P.; Schicht, I.M.; Pauwels, E.K.J.; te Velde, J.; de Graeff, J.

    1978-01-01

    Bone scintigraphy with Tc-99m HEDP was performed in 30 patients on maintenance hemodialysis, and the results of quantitative analysis were compared wth those of a normal group. To permit this comparison, elevated background activity due to the absence of renal radiotracer excretion was reduced by hemodialysis to levels found in the normals. Histologic proof of renal osteodystrophy had been obtained in all patients. the incidence of radiographic abnormalities was 46%, whereas abnormal scans were found in 25 patients (83%); skeletal lesions were also more pronounced and detected earlier. However, even when the scans appeared normal, the quantitative analysis showed increased skeletal activity in all patients. The total skeletal activity proved to be a good index of the severity of renal osteodystrophy and appeared dependent on both osteomalacia and hyperparathyroidism. These findings show that bone scintigraphy is a sensitive method to detect skeletal involvement in renal osteodystrophy

  20. Lung perfusion scintigraphy by SPECT

    International Nuclear Information System (INIS)

    Hirayama, Takanobu

    1990-01-01

    The initial study reports the characteristic performance using lung segmental phantom filled in Tc-99m pertechnetate. To evaluate the segmental defect in lung perfusion scintigraphy, we applied Bull's-eye analysis in addition to planar image set. Bull's-eye analysis especially facilitated the interpretation in both middle and lower lobes. Subsequently, to evolute the clinical application of Bull's-eye analysis, pulmonary scintigraphy was performed on 10 normal subjects and 60 patients with several pulmonary diseases. Of interest, Bull's-eye analysis, however, encouraged the interpretation in both lower lobes. To calculate the extention and severity of perfusion defect, the present study describes Bull's-eye analysis. Quantitative scoring showed higher in patients with lung cancer than those with pulmonary tuberculosis. The present study focus that Bull's-eye analysis can be useful for evaluating perfusion in patients with a couple of pulmonary diseases. (author)

  1. Parathyroid Scintigraphy in Renal Hyperparathyroidism

    Science.gov (United States)

    Taïeb, David; Ureña-Torres, Pablo; Zanotti-Fregonara, Paolo; Rubello, Domenico; Ferretti, Alice; Henter, Ioline; Henry, Jean-François; Schiavi, Francesca; Opocher, Giuseppe; Blickman, Johan G.; Colletti, Patrick M.; Hindié, Elif

    2015-01-01

    Secondary hyperparathyroidism (sHPT) is a major complication for patients with end-stage renal disease on long-term hemodialysis or peritoneal dialysis. When the disease is resistant to medical treatment, patients with severe sHPT are typically referred for parathyroidectomy (PTx), which usually improves biological parameters as well as clinical signs and symptoms. Unfortunately, early surgical failure with persistent disease may occur in 5%–10% of patients and recurrence reaches 20%–30% at 5 years. Presently, the use of parathyroid scintigraphy in sHPT is usually limited to the management of surgical failures after initial PTx. This review describes the strengths and limitations of typical 99mTc-sestamibi imaging protocols, and highlights the potential benefits of using parathyroid scintigraphy in the initial workup of surgical patients. PMID:23751837

  2. Radiation doses to patients from nuclear medicine examinations

    International Nuclear Information System (INIS)

    Boehm, K.; Boehmova, I.

    2014-01-01

    Public Health Authority of the Slovak Republic, Bratislava The exposure of the population to ionizing radiation is rising rapidly, nearly exclusively due to increasing medical use of radiation, including diagnostic methods of nuclear medicine. In 2012 Public health authority of the Slovak republic (PHA SR) performed a survey about the population exposure from nuclear medicine procedures. The primary objectives of this survey were to assess the frequency of different nuclear medicine procedures, determine the average activities administered by nuclear medicine procedures and compare them with the national diagnostic reference levels and determine the annual collective effective dose to the Slovak population from nuclear medicine. The effective dose calculation was based on the methodology of the ICRP32, ICRP80 and ICRP106. In Slovak republic are 11 nuclear medicine departments. The collected data of activities administered by different procedures correspond to 100 % of nuclear medicine departments. The total number of procedures included in the study was 36 250. The most commonly performed procedure was bone scintigraphy (35.9%), followed by lung perfusion and ventilation scintigraphy (17.0%), static and dynamic renal scintigraphy (13.0%), whole-body positron emission tomography of tumors with PET radiopharmaceuticals (11.6%), myocardial perfusion (8.8%), thyroid scintigraphy (6.2%), parathyroid scintigraphy (2.1%), scintigraphy of tumors (2.1%), scintigraphy of the liver and spleen (0.8%), brain perfusion (0.7%) and examination of the gastrointestinal system (0.3%). (authors)

  3. Bone scintigraphy in diabetic osteoarthropathy

    International Nuclear Information System (INIS)

    Eymontt, M.J.; Alavi, A.; Dalinka, M.K.; Kyle, G.C.

    1981-01-01

    Bone scans of patients with diabetic osteoarthropathy of the ankle and foot were characterized by a combination of diffuse and focal increased uptake, similar to that seen with hyperemia and reactive new bone formation. Scintigraphy showed more extensive abnormalities than radiography, with the scan abnormalities sometimes preceding the radiographic changes. The clinical and scintigraphic appearance of osteoarthropathy may improve following strict diabetic control and non-weight-bearing

  4. Liver scintigraphy of fulminant hepatitis

    International Nuclear Information System (INIS)

    Tamaki, Nagara; Ishihara, Takashi; Mori, Toru

    1980-01-01

    The liver scintigraphies of five patients with fulminant hepatitis were examined. Scintiphotos using sup(99m)Tc-phytate were taken within two weeks after the onset. Scintiphotos of 12 normal subjects, 11 cases with acute hepatitis, 17 cases with liver cirrhosis were served as control. Their scintiphotos showed reduction of the size, well-maintained uptake, mostly homogenous RI distribution, and no left lobe enlargement, which could differentiate them from the chronic liver dysfunction. In one of the cases chronological changes in liver scintigraphy were observed. The size of the liver was reduced progressively until the 16th day and re-enlarged at the 30th day and thereafter. Three indices [S/W, (R + L)/W, and L/R] were calculated. S: area of liver, R or L: longitudinal length of the right or left lobe, W: body width. Relative size of the liver expressed by S/W or (R + L)/W showed significant reduction in fulminant hepatitis compared with acute hepatitis. However, they were not different significantly from those of normal subjects. Except for liver cirrhosis, L/R (left lobe swelling index) did not show significant differences among fulminant hepatitis, normal subjects, and acute hepatitis. These indices were also useful in follow-up study of the liver scintigraphy. The liver scintigraphy in the early phase of fulminant hepatitis seems to reflect the degree of massive hepatic necrosis. It is also useful to differentiate chronic hepatic failure. Apparant reduction in scintigraphical liver size seems to suggest poor prognosis, however, it should also kept in mind that the size of the liver in this condition might change quite rapidly and greatly. (author)

  5. Isotopic scintigraphy in kidney grafting

    International Nuclear Information System (INIS)

    Renfro, Richard.

    1976-01-01

    Isotopic explorations of kidney transplants were performed on sixty-six patients. Three scintigraphic techniques were used: labelled ferrous ascorbate scintigraphy, sequential 99m technetium DTPA scintigraphy and the 131 I hippuran nephrogram. The aim of this study is to analyse the results obtained under different pathological circumstances affecting the transplant, to discuss the advantages of the techniques and to propose a working procedure. The most reliable and accurate technique is the 131 I hippuran nephrogram combined with sequential 99mTc DTPA, by which renal vascularisation may be judged labelled ferrous ascorbate on the other hand is too insensitive. Although the information supplied is mostly contained in the scintigraphic images, the nephrographic curves and the blood radioactivity decay time and rad V/rad R ratio measurements are very helpful in the early diagnosis and differential diagnosis of complications affecting the transplant. The proper use of isotopic scintigraphy in kidney grafting should provide optimum conditions for better survival of the transplant at minimum risk to the patient [fr

  6. Systematic review of cost-effectiveness of myocardial perfusion scintigraphy in patients with ischaemic heart disease: A report from the cardiovascular committee of the European Association of Nuclear Medicine. Endorsed by the European Association of Cardiovascular Imaging.

    Science.gov (United States)

    Trägårdh, Elin; Tan, Siok Swan; Bucerius, Jan; Gimelli, Alessia; Gaemperli, Oliver; Lindner, Oliver; Agostini, Denis; Übleis, Christopher; Sciagrà, Roberto; Slart, Riemer H; Underwood, S Richard; Hyafil, Fabien; Hacker, Marcus; Verberne, Hein J

    2017-05-01

    Coronary artery disease (CAD) is a major cause of death and disability. Several diagnostic tests, such as myocardial perfusion scintigraphy (MPS), are accurate for the detection of CAD, as well as having prognostic value for the prediction of cardiovascular events. Nevertheless, the diagnostic and prognostic value of these tests should be cost-effective and should lead to improved clinical outcome. We have reviewed the literature on the cost-effectiveness of MPS in different circumstances: (i) the diagnosis and management of CAD; (ii) comparison with exercise electrocardiography (ECG) and other imaging tests; (iii) as gatekeeper to invasive coronary angiography (ICA), (iv) the impact of appropriate use criteria; (v) acute chest pain, and (vi) screening of asymptomatic patients with type-2 diabetes. In total 57 reports were included. Although most non-invasive imaging tests are cost-effective compared with alternatives, the data conflict on which non-invasive strategy is the most cost-effective. Different definitions of cost-effectiveness further confound the subject. Computer simulations of clinical diagnosis and management are influenced by the assumptions made. For instance, diagnostic accuracy is often defined against an anatomical standard that is wrongly assumed to be perfect. Conflicting data arise most commonly from these incorrect or differing assumptions. Published on behalf of the European Society of Cardiology. All rights reserved. © The Author 2017. For permissions, please email: journals.permissions@oup.com.

  7. Scintigraphy for diagnosis of special problems in gastro-enterology

    International Nuclear Information System (INIS)

    Kempken, K.

    1987-01-01

    Nuclear medical studies have been used for many years in gastro-enterology to search for intrahepatic masses (static scintigram) and to clarify icterus and acute cholecystitis (hepatobiliary function scintigraphy). However, the range of indications for scintigraphic procedures is much broader still, and special questions in gastro-enterology, therefore, may often be answered, too. The methods discussed in the following all are non-invasive and may be applied not only in larger hospitals but also in private practices for nuclear medicine. (orig.) [de

  8. Myocardial perfusion scintigraphy with exercise and pharmacological stress

    International Nuclear Information System (INIS)

    Sundram, F.X.

    1995-01-01

    Cardiac studies including myocardial perfusion scintigraphy was begun in the Singapore General Hospital, nuclear medicine department in 1983. From a few patients per year using planar imaging, we have in 1994 studied 1500 patients for myocardial perfusion, using mainly SPECT (single-photon emission computerised tomography) and radionuclides such as Thallium-201, Technetium-99m sestamibi and Tc-99m tetrofosmin. Patients have been stressed using treadmill exercise or pharmacological agents; we have used dipyridamole, and dobutamine for pharmacological stress but have no experience with intravenous adenosine

  9. Myocardial perfusion scintigraphy with exercise and pharmacological stress

    Energy Technology Data Exchange (ETDEWEB)

    Sundram, F X [General Hospital of Singapore, Dept. of Nuclear Medicine (Senegal)

    1996-12-31

    Cardiac studies including myocardial perfusion scintigraphy was begun in the Singapore General Hospital, nuclear medicine department in 1983. From a few patients per year using planar imaging, we have in 1994 studied 1500 patients for myocardial perfusion, using mainly SPECT (single-photon emission computerised tomography) and radionuclides such as Thallium-201, Technetium-99m sestamibi and Tc-99m tetrofosmin. Patients have been stressed using treadmill exercise or pharmacological agents; we have used dipyridamole, and dobutamine for pharmacological stress but have no experience with intravenous adenosine.

  10. Femoroacetabular impingement mimicking avascular osteonecrosis on bone scintigraphy

    International Nuclear Information System (INIS)

    Suarez, Juan Pablo; Domínguez, María Luz; Nogareda, Zulema; Gómez, María Asunción; Muñoz, Jose

    2016-01-01

    Femoroacetabular impingement (FAI) is a structural abnormality of proximal femur and/or acetabulum. It has been recently described, and there are limited reports in nuclear medicine literature because bone scintigraphy is not listed in its diagnostic protocol, but it should be included on differential diagnosis when evaluating patients, with hip-related symptoms because it may be misinterpreted as degenerative changes or avascular necrosis, and its early treatment avoid progression to osteoarthritis. We describe the case of a male who suffered from hip pain. Bone planar scintigraphic appearance mimicked avascular necrosis, but single photon emission computed tomography (CT) imaging and CT examination confirmed the diagnosis of FAI

  11. Recommendations to realise and interpret the scintigraphy of myocardium perfusion

    International Nuclear Information System (INIS)

    Manrique, A.; Marie, P.Y.

    2003-06-01

    The purpose of these recommendations is to help the physicians in the realization and the interpretation of the tomo-scintigraphies of myocardium perfusion, when this examination is made at the patients having a known or suspected coronary incapacity. These recommendations aim to encourage the practitioners (of nuclear medicine) to reflect and to discuss the procedures applied in their services. These procedures must be also adapted, in every service, to the peculiarities of the environment and to the experiment of each one. (N.C.)

  12. Value of the joint- and bone-scintigraphy in benign skeleton diseases

    International Nuclear Information System (INIS)

    Pfannenstiel, P.

    1976-01-01

    Although skeleton scintigraphy is a relatively 'young' method when compared with other scintigraphic techniques, it is of great value in the diagnosis of benign skeleton diseases. For a full exploitation of the diagnostic possibilities of nuclear medicine, however, close cooperation between clinical rheumatologists, orthopaedic surgeons, radiologists and experts in nuclear medicine. If the right method is used at the right time, the number of X-rays and thus the technical and financial expenditure may be reduced to a considerable degree. (GSE) [de

  13. Scintigraphy of inflammation with nanometer-sixed colloidal tracers

    International Nuclear Information System (INIS)

    De Schrijver, M.

    1989-01-01

    This book describes a novel approach to the scintigraphy of inflammatory processes of the extremities. It presents a method specially developed to bring this diagnostic modality whithin the reach of every nuclear medicine centre without requiring a special infrastructure or extensively trained personnel. The author revieuws the existing nuclear medicine techniques and critically analyses their relative advantages and pitfalls before proceeding to a detailed account of the use of a colloidal tracer for detecting and monitoring inflammation. The author identifies the pathophysiological basis of his concept and gives extensive preclinical data prior to discussing a number of comparative clinical studies with the new technique. Additional benefits are brought by the book's emphasis on the importance of a solid radiopharmacological foundation to the medically used tracers and demonstrates with a few suprising examples how shortcomings at this level may lead to misleading findings in the daily practive of nuclear medicine, even with routinely used radiopharmaceuticals. (author). refs.; figs.; tabs

  14. Displays in scintigraphy

    International Nuclear Information System (INIS)

    Todd-Pokropek, A.E.; Pizer, S.M.

    1977-01-01

    Displays have several functions: to transmit images, to permit interaction, to quantitate features and to provide records. The main characteristics of displays used for image transmission are their resolution, dynamic range, signal-to-noise ratio and uniformity. Considerations of visual acuity suggest that the display element size should be much less than the data element size, and in current practice at least 256X256 for a gamma camera image. The dynamic range for image transmission should be such that at least 64 levels of grey (or equivalent) are displayed. Scanner displays are also considered, and in particular, the requirements of a whole-body camera are examined. A number of display systems and devices are presented including a 'new' heated object colour display system. Interaction with displays is considered, including background subtraction, contrast enhancement, position indication and region-of-interest generation. Such systems lead to methods of quantitation, which imply knowledge of the expected distributions. Methods for intercomparing displays are considered. Polaroid displays, which have for so long dominated the field, are in the process of being replaced by stored image displays, now that large cheap memories exist which give an equivalent image quality. The impact of this in nuclear medicine is yet to be seen, but a major effect will be to enable true quantitation. (author)

  15. 99mTc-RBC subtraction scintigraphy

    International Nuclear Information System (INIS)

    Inagaki, Syoichi; Tonami, Syuichi; Yasui, Masakazu; Kuranishi, Makoto; Sugishita, Kouki; Nakamura, Mamoru

    1994-01-01

    Sequential abdominal scintigrams with 99m Tc-labelled red blood cells (RBC) were subtracted for observing a site of gastrointestinal bleeding and calculating the bleeding rate. This method is technically very easy and can detect the site of bleeding with the minimum rate, as low as 0.2 ml/min., in a phantom experiment. In 23 cases with final diagnosis of gastrointestinal bleeding, conventional non-subtraction scintigraphy detected only 30% (7/23), but subtraction scintigraphy detected 61% (14/23). It was concluded that subtraction scintigraphy had higher sensitivity than conventional scintigraphy for early diagnosing bleeding. A combination of non-subtraction and subtraction scintigraphy is recommended to detect a site of gastrointestinal bleeding in a clinical setting. (author)

  16. Work practices and occupational radiation dose among radiologic technologists in Korea

    International Nuclear Information System (INIS)

    Cha, Eun Shil; Lee, Won Jin; Ha, Mina; Hwang, Seung Sik; Lee, Kyoung Mu; Jeong, Mee Seon

    2013-01-01

    Radiologic technologists are one of the occupational groups exposed to the highest dose of radiation worldwide. In Korea, radiologic technologists occupy the largest group (about 33%) among medical radiation workers and they are exposed to the highest dose of occupational dose of radiation as well (1). Although work experience with diagnostic radiation procedure of U.S. radiologic technologists was reported roughly (2), few studies have been conducted for description of overall work practices and the change by calendar year and evaluation of related factors on occupational radiation dose. The aims of the study are to describe work practices and to assess risk factors for occupational radiation dose among radiologic technologists in Korea. This study showed the work practices and occupational radiation dose among representative sample of radiologic technologists in Korea. The annual effective dose among radiologic technologists in Korea remains higher compared with those of worldwide average and varied according to demographic factors, year began working, and duration of working

  17. Development of terminology for mammographic techniques for radiological technologists.

    Science.gov (United States)

    Yagahara, Ayako; Yokooka, Yuki; Tsuji, Shintaro; Nishimoto, Naoki; Uesugi, Masahito; Muto, Hiroshi; Ohba, Hisateru; Kurowarabi, Kunio; Ogasawara, Katsuhiko

    2011-07-01

    We are developing a mammographic ontology to share knowledge of the mammographic domain for radiologic technologists, with the aim of improving mammographic techniques. As a first step in constructing the ontology, we used mammography reference books to establish mammographic terminology for identifying currently available knowledge. This study proceeded in three steps: (1) determination of the domain and scope of the terminology, (2) lexical extraction, and (3) construction of hierarchical structures. We extracted terms mainly from three reference books and constructed the hierarchical structures manually. We compared features of the terms extracted from the three reference books. We constructed a terminology consisting of 440 subclasses grouped into 19 top-level classes: anatomic entity, image quality factor, findings, material, risk, breast, histological classification of breast tumors, role, foreign body, mammographic technique, physics, purpose of mammography examination, explanation of mammography examination, image development, abbreviation, quality control, equipment, interpretation, and evaluation of clinical imaging. The number of terms that occurred in the subclasses varied depending on which reference book was used. We developed a terminology of mammographic techniques for radiologic technologists consisting of 440 terms.

  18. International Stability. The Responsibility of the Scientist and Technologist

    International Nuclear Information System (INIS)

    Broda, E.

    1983-01-01

    Scientists and technologists ('technical experts') bear heavy responsibility for the explosive world situation where the further existence of civilization is threatened. Without their initiatives and their efforts the weapons of mass annihilation would not have been invented and developed. The essential features of nuclear warfare are explained. 25-40% of the world force of technical experts may be on war work now. Whatever justification for their work they see, they are tied to it, as quitting would mean loss of income, possibilities for professional career, status and prestige. On the other hand, many scientists, including Bohr, Joliot, Pauling, Einstein and Russell, have done invaluable work in informing, warning, educating and mobilizing the public against the danger of a nuclear war. In the present desperate situation the support of the largest possible number of technical experts for such activities ought to be enlisted. In this respect engineers and technologists could follow the example of medical doctors. Moreover, owing to their familiarity with criteria for stability in material systems engineers could make constructive proposals for the improvement of stability in international relations. (author)

  19. Improving the accuracy of myocardial perfusion scintigraphy results by machine learning method

    International Nuclear Information System (INIS)

    Groselj, C.; Kukar, M.

    2002-01-01

    Full text: Machine learning (ML) as rapidly growing artificial intelligence subfield has already proven in last decade to be a useful tool in many fields of decision making, also in some fields of medicine. Its decision accuracy usually exceeds the human one. To assess applicability of ML in interpretation the results of stress myocardial perfusion scintigraphy for CAD diagnosis. The 327 patient's data of planar stress myocardial perfusion scintigraphy were reevaluated in usual way. Comparing them with the results of coronary angiography the sensitivity, specificity and accuracy for the investigation was computed. The data were digitized and the decision procedure repeated by ML program 'Naive Bayesian classifier'. As the ML is able to simultaneously manipulate of whatever number of data, all reachable disease connected data (regarding history, habitus, risk factors, stress results) were added. The sensitivity, specificity and accuracy for scintigraphy were expressed in this way. The results of both decision procedures were compared. With ML method 19 patients more out of 327 (5.8 %) were correctly diagnosed by stress myocardial perfusion scintigraphy. ML could be an important tool for decision making in myocardial perfusion scintigraphy. (author)

  20. Evaluation of the diagnostic performance of SPECT coupled to tomodensitometry (SPECT-CT) in the daily practice of bone scintigraphy at the Nuclear Medical station of Nancy

    International Nuclear Information System (INIS)

    Netter, F.; Journo, A.; Mayer, J.C.; Grandpierre, S.; Daragon, N.; Karcher, G.; Olivier, P.; Scigliano, S.

    2008-01-01

    Objective: The purpose of our study was to evaluate the diagnostic performance of SPECT coupled to computed axial tomography (SPECT- CT) in our daily practice of bone scintigraphy. Subjects and methods: SPECT- CT obtained as a complement to the planar bone scintigraphy in 39 patients were studied. Each type of image was retrospectively read by two different observers: a nuclear medicine physician who was unaware of SPECT- CT results analysed planar bone scintigraphy, a second one who was unaware of planar bone scintigraphy results analysed SPECT- CT images. In this population of patients, 17 patients were addressed in an oncologic setting. The 22 other patients were addressed for pain of indeterminate origin without neoplastic context. Results: In 13% of the cases, SPECT- CT specified the precise location of increased uptake foci seen on planar bone scintigraphy. In 38% of cases, SPECT- CT confirmed a diagnosis suspected by the planar bone scintigraphy. In 10% of cases, SPECT- CT established a diagnosis that was uncertain with planar bone scintigraphy. In 26% of cases, SPECT- CT brought no additional information. Finally in 3% of cases, SPECT- CT proved to be more sensitive than planar images. Conclusion: Our study demonstrates the utility of SPECT- CT in the daily practice of bone scintigraphy, this complementary imaging study benefited to 74% of our patients. (authors)

  1. Scintigraphy of the pancreas head

    Energy Technology Data Exchange (ETDEWEB)

    Basse-Cathalinat, B; Beck, C; Ducassou, D; Blanquet, P [Hopital Pellegrin, 33 - Bordeaux (France)

    1975-01-01

    Emphasis is placed on the considerable improvement due to the computer in pancreatic scintigraphy, which has become more exact as a result. A liver subtraction technique is used. From the data acquired in this method two matrices are established, one for selenomethionine 75 and the other for gold 198. For processing the data are integrated in two broad hepatic areas, of coordinates identical in the two scintigrams, and their ratio is found; the computer multiplies the specifically hepatic matrix by this ratio then subtracts one from the two scintigrams thus normalized. The background can be subtracted from the resulting image.

  2. Doses and population irradiation factors for Canadian radiation technologists (1978 to 1988)

    International Nuclear Information System (INIS)

    Huda, W.; Bews, J.; Gordon, K.; Sutherland, J.B.; Sont, W.N.; Ashmore, J.P.

    1991-01-01

    Individual and collective radiation doses received by Canadian radiation technologists (RTs) working in diagnostic radiology, nuclear medicine and radiotherapy are summarized for the period 1978 to 1988. The data were obtained directly from the National Dose Registry, Department of National Health and Welfare. Over the 11-year study period the mean annual dose equivalent fluctuated around 0.2, 1.8 and 1.1 mSv for RTs working in diagnostic radiology, nuclear medicine and radiotherapy respectively. Over the same period the occupational collective dose equivalent decreased in diagnostic radiology by 44% and radiotherapy by 35%, and increased in nuclear medicine by 45%. Approximately 10 000 RTs are monitored each year, with an estimated total occupational collective dose equivalent of about 3.6 person-sievert. Analysis of dose distribution data showed that only 1.3% of all monitored RTs received an annual whole-body dose equivalent greater than the current legal limit for members of the public (5 mSv). Approximately half of the RTs working in nuclear medicine and radiotherapy received an annual dose equivalent in excess of 0.5 mSv; only 7.3% of their diagnostic radiology counterparts exceeded this level. Demographic data showed a high preponderance of young women in all three RT classifications, and an analysis of the radiation risks to this occupational group revealed increases of up to 12% above the risk associated with a 'standard' adult working population exposed to the same collective dose equivalent. (20 refs., 4 tabs., fig.)

  3. Myocardial scintigraphy: methods and indications

    International Nuclear Information System (INIS)

    Knapp, W.H.

    1993-01-01

    Myocardial scintigraphy comprises perfusion imaging using TI-201 or - more recently - Tc-99m-labeled compounds with high affinity to myocytes. Imaging with these agents has become an important procedure in the detection of coronary artery disease, particularly in patients with non-diagnostic stress-ECG, in the functional evaluation of coronary stenoses after angiographical documentation in order to meet the adequate therapy decision, in therapy monitoring and follow-up, in the post infarction assessment of myocardial viability and differentiation between severe ischemia and scar and, occasionally, in acute ischemia. The use of positron emitters does not offer significant advantages for mere perfusion imaging, but is indispensable for the scintigraphic investigation of certain aspects of myocardial metabolism, particularly for the differentiation of viable ischemic wall segments from irreversibly damaged tissue. Imaging of myocardial necrosis has been improved by the introduction of labeled antimyosin antibody fragments and offers a considerable clinical potential in the diagnosis of myocarditis and cardiac transplant rejection. Neurohumoral aspects are increasingly involved in our understanding of myocardial failure. Scintigraphy of innervation/neurotransmission contributes to the investigation of pathophysiological alterations in myocardial insufficiency and in heart transplants. (orig.) [de

  4. Adrenal scintigraphy using 131I-Adosterol

    International Nuclear Information System (INIS)

    Fukunaga, Masao; Dokoh, Shigeharu; Yamamoto, Itsuo; Morita, Rikushi; Torizuka, Kanji

    1977-01-01

    131 I-Adosterol (6β-iodomethyl-19-norcholest-5(10)-3β-ol) was administered to evaluate adrenal grand in 20 patients including 9 patients with primary aldosteronism, 5 with Cushing's syndrome, one with pheochromocytoma, one with retroperitoneal tumor, 3 with essential hypertension and one with obesity. Standard scintigraphies were performed at 3rd day and again 6th day after administration of 131 I-adosterol (1-1.5 mCi). Suppression scintigraphies were obtained while the patients were taking dexamethasone 2 to 3 mg daily from 3 days prior to injection of the tracer until adrenal imaging. In the cases with essential hypertension and obesity, both adrenal glands were delineated equally by standard scintigraphy, and in one patient, undergone suppression scintigraphy, the uptake of 131 I-adosterol by both glands were completely inhibited by dexamethasone administration. In primary aldosteronism, six of the 9 patients demonstrated the increased radioactivity in one side, and were diagnosed as aldosteronoma. In 3 cases, failed to show the lesions on standard scintigraphy, the lesions could be detected by suppression scintigraphy, and aldosteronomas measuring 1 x 1 x 0.7, 2 x 2 x 1 and 1.7 x 1.5 x 0.8 cm were confirmed by operation. In Cushing's syndrome, standard scintigraphy could easily distinguish between adenoma (one case) and bilateral hyperplasia (4 cases). Adrenal scintigraphy was also a useful method in order to assess the effect of pituitary irradiation therapy in the case of hyperplasia. In pheochromocytoma and retroperitoneal tumor, the side of the lesion was identified by the absence of a functioning gland. Suppression scintigraphy was particularly useful in detecting the localization of the small tumor in primary aldosteronism. (auth.)

  5. Procedure guideline for thyroid scintigraphy (version 3)

    International Nuclear Information System (INIS)

    Dietlein, M.; Schicha, H.; Eschner, W.; Deutsche Gesellschaft fuer Medizinische Physik; Koeln Univ.; Leisner, B.; Allgemeines Krankenhaus St. Georg, Hamburg; Reiners, C.; Wuerzburg Univ.

    2007-01-01

    The version 3 of the procedure guideline for thyroid scintigraphy is an update of the procedure guideline previously published in 2003. The interpretation of the scintigraphy requires the knowledge of the patients' history, the palpation of the neck, the laboratory parameters and of the sonography. The interpretation of the technetium-99m uptake requires the knowledge of the TSH-level. As a consequence of the improved alimentary iodine supply the 99m Tc-uptake has decreased; 100 000 counts per scintigraphy should be acquired. For this, an imaging time of 10 minutes is generally needed using a high resolution collimator for thyroid imaging. (orig.)

  6. Esophageal scintigraphy: A comparison with esophagoscopy

    Energy Technology Data Exchange (ETDEWEB)

    Kjellen, G.; Andersson, P.; Sandstroem, S.

    1987-01-01

    Fifty consecutive patients with different esophageal symtoms were investigated with esophageal endoscopy, transit scintigraphy, and gastroesophageal (GE) scintigraphy with extra-abdominal compression. Scintigraphic findings were abnormal in 27 of those 31 patients (87%) who were classified as abnormal at endoscopy. A prolonged transit time was the commonest finding, but hiatal hernia and GE reflux were also found. However, the scintigraphic procedure showed abnormalities in 6 of 19 (31%) patients who were classified as normal at endoscopy. Esophageal scintigraphy is recommended as a screening test before endoscopy is decided on. 20 refs.

  7. 201Tl-99mTc subtraction scintigraphy as a preoperative localization procedure for persistent primary and secondary hyperparathyroidism

    International Nuclear Information System (INIS)

    Geipel, D.; Mischke, W.; Deckart, H.; Weiss, M.L.

    1989-01-01

    5 patients with a persistent hyperparathyroidism underwent thallium-technetium subtraction scintigraphy prior to reoperation. In all cases the fidings obtained by scintigraphy were confirmed by operation. Based on the preoperative localization of parathyroid adenomas and hyperplastic parathyroid bodies, respectively, their extirpation could be performed in short time. This new nuclear medicine localization procedure for identifying hyperparathyroidism has proved to be useful both in the cervical region and the mediastinum. Thus, as a sensitive method with a non-invasive character this procedure should be applied to reoperations before any other localization method. The indication for performing thallium-technetium subtraction scintigraphy as well as its evaluation have to be carried out in close collaboration between surgeons and nuclear medicine specialists. (author)

  8. An Inquiry into Educational Technologists' Conceptions of Their Philosophies of Teaching and Technology

    Science.gov (United States)

    Kanuka, Heather; Smith, Erika E.; Kelland, Jennifer H.

    2013-01-01

    It has been suggested that when we know our philosophy of teaching and technology we then have the ability to articulate not only what we are doing as educational technologists, but what we want to achieve with the technologies, and why. And while most educational technologists would agree that knowing our philosophical orientations is important,…

  9. Influence of decrease of the amount of starting salary of radiological technologists

    International Nuclear Information System (INIS)

    Shibuya, Koichi; Kato, Hirokazu

    2010-01-01

    This paper analyzes differences and changes within and between the occupation of nurses, radiological technologists, and medical technologists concerning starting salary from April 2005 to March 2009. This paper also investigates the percentage of difference in the amount of starting salary of nurses, radiological technologists, and medical technologists according to their educational attainments. The research-target used was the full-time-job-opening data provided to Okayama University within the given period of time, which specifies the amount of starting salary. The result shows that one's educational background has a crucial influence on the amount of one's starting salary. In fact, the percentage of the amount of starting salary base on one's educational attainment all increased in nurses, radiological technologists, and medical technologists from April 2007 to March 2009. However, this percentage for radiological technologists remains only 50% of increase, which was less significant than other two professional occupations. Moreover, the result indicates a crucial change in the amount of basic starting salary: while the amount of basic starting salary of nurses in 2008 has increased since 2005, that of radiological technologists has dropped remarkably. If this situation is not improved in the near future, the health-service sector may experience a decrease in the number of skilled practitioners which, in turn, will result in a decline in quality of medical care. (author)

  10. Nuclear Medicine Annual, 1989

    International Nuclear Information System (INIS)

    Freeman, L.M.; Weissmann, H.S.

    1989-01-01

    Among the highlights of Nuclear Medicine Annual, 1989 are a status report on the thyroid scan in clinical practice, a review of functional and structural brain imaging in dementia, an update on radionuclide renal imaging in children, and an article outlining a quality assurance program for SPECT instrumentation. Also included are discussions on current concepts in osseous sports and stress injury scintigraphy and on correlative magnetic resonance and radionuclide imaging of bone. Other contributors assess the role of nuclear medicine in clinical decision making and examine medicolegal and regulatory aspects of nuclear medicine

  11. Radionuclide bone scintigraphy in pediatric orthopedics

    International Nuclear Information System (INIS)

    Conway, J.J.

    1986-01-01

    Radionuclide bone scintigraphy is highly sensitive and specific for diagnosing the musculoskeletal disorders of childhood. Conditions such as neonatal osteomyelitis, septic arthritis, diskitis of childhood, Legg-Calve-Perthes disease, the osteochondroses, the toddler's fracture, sports injuries, spondylolysis, myositis ossificians, and reflex sympathetic dystrophy are readily defined. High-quality state-of-the-art scintigraphy is essential in infants and young children. 64 references

  12. Radionuclide bone scintigraphy in pediatric orthopedics

    Energy Technology Data Exchange (ETDEWEB)

    Conway, J.J.

    1986-12-01

    Radionuclide bone scintigraphy is highly sensitive and specific for diagnosing the musculoskeletal disorders of childhood. Conditions such as neonatal osteomyelitis, septic arthritis, diskitis of childhood, Legg-Calve-Perthes disease, the osteochondroses, the toddler's fracture, sports injuries, spondylolysis, myositis ossificians, and reflex sympathetic dystrophy are readily defined. High-quality state-of-the-art scintigraphy is essential in infants and young children. 64 references.

  13. Pancreatic scintigraphy in diabetes mellitus

    International Nuclear Information System (INIS)

    Shio, Hiroshi; Ueki, Jyuichi; Nomura, Kozi; Nakamura, Yoshifumi

    1983-01-01

    Pancreatic scintigraphy was performed on 67 diabetic patients (42 males and 25 females) in order to study exocrine pancreatic functions in primary diabetes. Relationships between visualization and the onset age, sex, morbid period, presence or absence of retinitis, good or poor control of blood glucose control and the therapeutic modality of diabetes were examined. Abnormality was detected in 34 cases (50.7%), being frequent among male patients in their 50s. The more serious the diabetes, i.e., with a longer morbid period, poorer blood glucose control and worse retinitis, the higher was the frequency of abnormality in pancreatic visualization. The frequency of abnormality was high in association with insulin treatment, oral tablets and single dietary treatment in that order. The more severe the hypoinsulinism, the higher was the frequency of abnormality. This technique can be used as a screening means for exocrine pancreatic function tests on diabetics. (Chiba, N.)

  14. Static and dynamic thyroid scintigraphy

    International Nuclear Information System (INIS)

    Mahlstedt, J.

    1986-01-01

    Static images as isolated investigation in thyroid diagnosis mainly provides morphologic information, and therefore sonography is largely applied for this purpose. 99m Tc-pertechnetate scans or 123 I-scans are indicated in cases of malpositions and serve to clarify lesions of unknown dignity. Additionally 201 Tl-chloride is suited for examinations with regard to metabolically active thyroid tissue, whereby differential diagnostic laboratory tests must be carried out to exclude parathyroid adenoma. Dynamic thyroid scans before and after regulation tests (suppression, stimulation) reflect the physiological correlation between the iodine avidity of the thyroid, the peripheral thyroid hormone concentrations and the hypophyseal regulation in the TRH-test. The main application of this procedure is the clarification of thyroid autonomy, i.e. indication, detection, quantification or exclusion of thyroid autonomy. For the treatment of immunogenic thyrotoxicosis, dynamic thyroid scintigraphy provides important information about the onset of remission, thus permitting to end thyreostatic therapy. (orig.) [de

  15. Dynamic renal scintigraphy at hydronephrosis

    International Nuclear Information System (INIS)

    Petrov, T.; Chukov, I.; Svrakova, E.

    1998-01-01

    The aim of the study was to estimate the clinical relevance and accuracy of dynamic renal scintigraphy (DRS) in case of obstructed kidneys as hydronephrosis is among the complications at different renal diseases, like nephrolithiasis and urolithiasis. Twenty-one patients mainly with unilateral hydronephrosis were studied. DRS with 99m Tc-MAG3 or 99m Tc-EC was done and quantitative parameters of the morphological and functional status of every kidney were assessed. At 24 % of the patients accumulation curves typical for obstructed by hydronephrosis kidneys were obtained. At 38 % the type of renograms of the affected kidneys was intermediate one, closer to that at the cases with nephrosclerosis, with lower uptake and severe parenchymal changes. The rest 38 % of the cases showed normal renograms or slightly delayed downslope. DRS is a very precise and sensitive method for evaluation of the degree of kidney damage in cases with hydronephrosis

  16. Function scintigraphy of the esophagus

    International Nuclear Information System (INIS)

    Leisner, B.; Seidl, I.; Wirsching, R.

    1982-01-01

    In order to evaluate the incidence of esophageal motility disorders associated with gastroesophageal reflux disease we studied the esophageal transit of a sup(99m)Tc-DTPA bolus and the ge-reflux by means of functional scintigraphy. Using the telemetric 24 hours pH-monitoring as reference method in 19 patients, the accuracy of the radioisotope reflux test was found to be 89%. Among 47 patients with histologically proven esophagitis 32 (68%) showed a positive reflux scintiscan result. 17 of them had an impairment of the esophageal clearance which was present in 10 additional cases with a normal reflux study. In 5 patients the results of both tests were within the normal range. A positive reflux scintiscan with or without motility disorder makes a pathological reflux highly probable. Impairment of the esophageal transit combined with a negative reflux test may be due to esophagitis, but also to other functional disorders such as e.g. scleroderma. (orig.) [de

  17. Function scintigraphy of the esophagus

    Energy Technology Data Exchange (ETDEWEB)

    Leisner, B.; Seidl, I.; Wirsching, R.

    1982-08-01

    In order to evaluate the incidence of esophageal motility disorders associated with gastroesophageal reflux disease we studied the esophageal transit of a sup(99m)Tc-DTPA bolus and the ge-reflux by means of functional scintigraphy. Using the telemetric 24 hours pH-monitoring as reference method in 19 patients, the accuracy of the radioisotope reflux test was found to be 89%. Among 47 patients with histologically proven esophagitis 32 (68%) showed a positive reflux scintiscan result. 17 of them had an impairment of the esophageal clearance which was present in 10 additional cases with a normal reflux study. In 5 patients the results of both tests were within the normal range. A positive reflux scintiscan with or without motility disorder makes a pathological reflux highly probable. Impairment of the esophageal transit combined with a negative reflux test may be due to esophagitis, but also to other functional disorders such as e.g. scleroderma.

  18. Scintigraphy in benign thyroid disorders

    International Nuclear Information System (INIS)

    Mahlstedt, J.

    2004-01-01

    For diagnosis, therapy and prognosis of benign thyroidal disorders thyroidal scintigraphy has to be seen in full strength in relation to thyroid hormone metabolism and regulation. Thyroidal iodine avidity can easily be assessed by TcTU ( 99m Tc-thyroid-up-take 20 min p.inj.), as the well known standard measure for the service of goiter patients. TcTU and TSH show concordance, i.e. direct correlation, when thyroid regulation is intact, however there is no correlation, i.e. discordance, in disorders such as destruction, autonomy oder immunogenic stimulation. The strategy to evaluate concordance/discordance of TcTU and TSH in outpatient routine work (''one stop shop'') is demonstrated in a variety of clinical situations being not always conform to current guide lines and recommendations. (orig.)

  19. Clinical evaluation of scintigraphy for malignant tumors in children

    International Nuclear Information System (INIS)

    Ishii, Katsumi; Aso, Koichi; Yamada, Nobuaki; Horiike, Shigeharu; Matsubayashi, Takashi

    1982-01-01

    X-ray study, Computed tomography, Echography and Scintigraphy are chosen to draw visual images of malignant tumors in children. To obtain higher diagnostic sensitivity, we recommend that 67-Ga-scintigraphy and other different scitigraphy for organs are performed on each child suspected of having malignant tumor. 67-Ga does not have accurate sensitivity for neuroblastoma, but bone scintigraphy with 99m-Tc-labelled phosphate complexes detects neuroblastoma as a positive image. 67-Ga scintigraphy and other different radiopharmaceutical scintigraphy should be used for primary visualization and control of malignant tumor in children. Serial scintigraphy at proper intervals are very effective to detect local recurrence and metastasis of malignant tumors. (author)

  20. A study of radiological protection for women of reproductive age in diagnostic radiology. Questionnaire for medical radiation technologists

    International Nuclear Information System (INIS)

    Tsubone, Chie; Ban, Nobuhiko; Kai, Michiaki

    2005-01-01

    There has been great concern regarding the radiation protection for women of reproductive age when exposed to diagnostic radiation. The 10-day-rule proposed by the ICRP has not been recommended since 1983 because the risk to embryo and fetus within four weeks after menstruation may be small. However, some expects see that incomplete abandon of the 10-day-rule might cause confusion among the medical doctors and patients, and consequently unwarranted abortion happens. This paper surveyed the views of radiation technologies in hospitals and discussed how radiation exposure of women of reproductive age in medicine should be controlled. We found that the views to be 10-day-rule were spilt 50:50 and that radiation technologists do not necessarily think the 10-day-rule should be abandoned. Even the radiation technologists who are supposed to be able to explain to the patients the health risk following diagnostic exposure do not fully understand the risk involved. In conclusion, although a low-dose risk of diagnostic exposure should be sufficiently educated in order to obtain an exact understanding, the 10-day-rule may be useful in order to actually avoid any trouble in diagnostic radiology. (author)

  1. Veterinary nuclear medicine

    International Nuclear Information System (INIS)

    Krzeminski, M.; Lass, P.; Teodorczyk, J.; Krajka, J.

    2004-01-01

    The veterinary use of radionuclide techniques dates back to the mid-sixties, but its more extensive use dates back to the past two decades. Veterinary nuclear medicine is focused mainly on four major issues: bone scintigraphy - with the majority of applications in horses, veterinary endocrinology - dealing mainly with the problems of hyperthyreosis in cats and hyperthyreosis in dogs, portosystemic shunts in small animals and veterinary oncology, however, most radionuclide techniques applied to humans can be applied to most animals. (author)

  2. Medical radiation exposure and its impact on occupational practices in Korean radiologic technologists

    International Nuclear Information System (INIS)

    Ko, Seul Ki; Lee, Won Jin

    2016-01-01

    The use of radiology examinations in medicine has been growing worldwide. Annually an estimated 3.1 billion radiologic exams are performed. According to this expansion of medical radiation exposure, it has been hard to pay no attention to the effects of medical radiation exposures in the exposure from different types of radiation source. This study, therefore, was aimed to assess the association of medical and occupational radiation exposure in Korean radiologic technologists and evaluate necessity for its consideration in occupational studies. This study did not show the strong association between medical radiation exposure and occupational radiation exposure except several modalities with specific frequency. These results are preliminary but certainly meaningful for interpretation of epidemiologic finding, therefore, we need further evaluation specially for the repeatedly exposed imaging tests and high dose procedures that presented somewhat weak relationship in this study linked with health outcomes of radiation exposure. This study did not show the strong association between medical radiation exposure and occupational radiation exposure except several modalities with specific frequency. These results are preliminary but certainly meaningful for interpretation of epidemiologic finding, therefore, we need further evaluation specially for the repeatedly exposed imaging tests and high dose procedures that presented somewhat weak relationship in this study linked with health outcomes of radiation exposure.

  3. Medical radiation exposure and its impact on occupational practices in Korean radiologic technologists

    Energy Technology Data Exchange (ETDEWEB)

    Ko, Seul Ki; Lee, Won Jin [Dept. of Preventive Medicine, Korea University College of Medicine, Seoul (Korea, Republic of)

    2016-12-15

    The use of radiology examinations in medicine has been growing worldwide. Annually an estimated 3.1 billion radiologic exams are performed. According to this expansion of medical radiation exposure, it has been hard to pay no attention to the effects of medical radiation exposures in the exposure from different types of radiation source. This study, therefore, was aimed to assess the association of medical and occupational radiation exposure in Korean radiologic technologists and evaluate necessity for its consideration in occupational studies. This study did not show the strong association between medical radiation exposure and occupational radiation exposure except several modalities with specific frequency. These results are preliminary but certainly meaningful for interpretation of epidemiologic finding, therefore, we need further evaluation specially for the repeatedly exposed imaging tests and high dose procedures that presented somewhat weak relationship in this study linked with health outcomes of radiation exposure. This study did not show the strong association between medical radiation exposure and occupational radiation exposure except several modalities with specific frequency. These results are preliminary but certainly meaningful for interpretation of epidemiologic finding, therefore, we need further evaluation specially for the repeatedly exposed imaging tests and high dose procedures that presented somewhat weak relationship in this study linked with health outcomes of radiation exposure.

  4. Radiation protect during the ventilation scintigraphy of Tc99m DTPA radioaerosol in pediatric application

    International Nuclear Information System (INIS)

    Chen, Yu-Wen; Dai, Zen-Kong; Huang, Ying-Fong; Jong, Shiang-Bing

    2000-01-01

    Lung ventilation-perfusion scintigraphy is of great value for the management of patients with both primary lung disease and heart disease, by proving patho- physiological information of importance for the diagnosis, follow-up and functional evaluation of the patients. Krypton 81m radioactive gas is preferable for pediatric application due to its short half-life. However, the rubidium-krypton 81m generator is not popular in hospital of our country. Tc99m DTPA radioaerosol ventilation scintigraphy has its unique convenient for clinical application. But, the most disadvantage of clinical application of Tc99m DTPA radioaerosol is contamination of environment when the poor-cooperative patient can't breathe by mouth. For this reason, we design the certain procedure to reduce the radioaerosol contamination. During May to Aug., 1999, we collect 36 pediatric patients (male to female ratio 2:1, age from 6 months to 20 years old) with clinical history of lung or heart disease, including congenital heart disease, asthma and so on. Before the cases receive 10 to 15 mCi Tc99m DTPA radioaerosol ventilation scan, all of them were trained with breath training. And during the ventilation scintigraphy, the special mouth mask is designed to prevent the radioaerosol leakage into atmosphere. Then Geiger-Muller survey meter was arranged to detect the environmental contamination of radioaerosol in the mask, one and two metes away from the mask every 10 minutes during ventilation scintigraphy procedure and 1 hour after finishing image. Two nuclear medicine physicians evaluated imaging quality of ventilation scintigraphy. Results: Among thirty-six pediatric patients with prior breath training, thirty-two cases are successful to proceed the Tc99m DTPA ventilation scintigraphy. The other four cases that were under three-year-old fail to receive ventilation scintigraphy. There is limited detectable radioactivity in the mouth mask at early 10 minute by Geiger-Muller counter. No significant

  5. Work procedures and risk factors for high rdiation exposure among radiologic technologists in South Korea

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jae Young; Choi, Yeong Chull [Dept. of Preventive Medicine, Keimyung University College of Medicine, Daegu (Korea, Republic of); Lee, Won Jin; Cha, Eun Shil [Dept. of Preventive Medicine, Korea University College of Medicine, Seoul (Korea, Republic of)

    2016-12-15

    Radiologic technologists currently consist of 31.5% among diagnostic radiation workers in South Korea. Among diagnostic radiation workers, radiologic technologists receive the highest annual and collective doses in South Korea. Comprehensive assessment of the work practices and associated radiation doses from diagnostic radiology procedures should be undertaken for effective prevention for radiologic technologists. Using the national survey, this study aimed (1) to explore the distribution of the work procedures performed by gender, (2) to evaluate occupational radiation exposure by work characteristics and safety compliance, (3) to identify the primary factors influencing high radiation exposure among radiologic technologists in South Korea. This study provided detailed information on work practices, number of procedures performed on weekly basis, and occupational radiation doses among radiologic technologists in South Korea. Average radiation dose for radiologic technologists is higher than other countries, and type of facility, work safety, and wearing lead apron explained quite a portion of increased risk in the association between radiology procedures and radiation exposure among radiologic technologists.

  6. Work procedures and risk factors for high rdiation exposure among radiologic technologists in South Korea

    International Nuclear Information System (INIS)

    Kim, Jae Young; Choi, Yeong Chull; Lee, Won Jin; Cha, Eun Shil

    2016-01-01

    Radiologic technologists currently consist of 31.5% among diagnostic radiation workers in South Korea. Among diagnostic radiation workers, radiologic technologists receive the highest annual and collective doses in South Korea. Comprehensive assessment of the work practices and associated radiation doses from diagnostic radiology procedures should be undertaken for effective prevention for radiologic technologists. Using the national survey, this study aimed (1) to explore the distribution of the work procedures performed by gender, (2) to evaluate occupational radiation exposure by work characteristics and safety compliance, (3) to identify the primary factors influencing high radiation exposure among radiologic technologists in South Korea. This study provided detailed information on work practices, number of procedures performed on weekly basis, and occupational radiation doses among radiologic technologists in South Korea. Average radiation dose for radiologic technologists is higher than other countries, and type of facility, work safety, and wearing lead apron explained quite a portion of increased risk in the association between radiology procedures and radiation exposure among radiologic technologists.

  7. Factors affecting job satisfaction among the radiologic technologists

    International Nuclear Information System (INIS)

    Kim, Chang Ho; Jeong, Won Mee; Yu, Seung Hum; Lee Sun Hee; Sohn, Tae Yong

    1997-01-01

    Job satisfaction is very important for adequate manpower management in the medical field. To study job satisfaction among the radiologic technologists, 344 cases were reviewed in five university hospitals and one general hospital. Self-administered questionnaire was used to study their socioeconomic characteristics, working conditions, job satisfaction, and the factors affecting there job satisfaction. The results were as follows : 1. There was statistically significant difference in job satisfaction according to the their department of employment, position, and hospital characteristics. 2. The group that was satisfied with their salary had a higher job satisfaction score, whereas others who were not satisfied ranked lower. 3. The positive answering group on the ability and job recognition ranked higher score on the job satisfaction than the negative answering group. 4. The group that was in good relationship with their superiors and co-workers scored higher on job satisfaction. From the above results, the job satisfaction was high for the group with positive thinking and reply, but the intentin to change their job was low. Considering the fact that these results represent only 6 hospitals from limited arease, therefore, necessary to include more medical facilities nationwide, especially small-medium sized clinics or hospitals where the difficulty with high turnover rate of employment is expected, to study further various factors involving job satisfaction in the future

  8. Facial exposure dose assessment during intraoral radiography by radiological technologists

    Energy Technology Data Exchange (ETDEWEB)

    Yu, Hwan; Yang, Han Joon [Dept. of International Radiological Science, Hallym University of Graduate Studies, Chuncheon (Korea, Republic of)

    2014-09-15

    The study examined the changes in the decreased facial exposure dose for radiological technologists depending on increased distance between the workers and the X-ray tube head during intraoral radiography. First, the facial phantom similar to the human tissues was manufactured. The shooting examination was configured to the maxillary molars for adults (60 kVp, 10 mA, 50 msec) and for children (60 kVp, 10 mA, 20 msec), and the chamber was fixed where the facial part of the radiation worker would be placed using the intraoral radiography equipment. The distances between the X-ray tube head and the phantom were set to 10 cm, 15 cm, 20 cm, 25 cm, 30 cm, 35 cm, and 40 cm. The phantom was radiated 20 times with each examination condition and the average scattered doses were examined. The rate at the distance of 40 cm decreased by about 92.6% to 7.43% based on the scattered rays radiated at the distance of 10 cm under the adult conditions. The rate at the distance of 40 cm decreased by about 97.6% to 2.58% based on the scattered rays radiated at the distance of 10 cm under the children conditions. Protection from the radiation exposure was required during the dental radiographic examination.

  9. Simulation modelling: educational development roles for learning technologists

    Directory of Open Access Journals (Sweden)

    David Riley

    2002-12-01

    Full Text Available Simulation modelling was in the mainstream of CAL development in the 1980s when the late David Squires introduced this author to the Dynamic Modelling System. Since those early days, it seems that simulation modelling has drifted into a learning technology backwater to become a member of Laurillard's underutilized, 'adaptive and productive' media. Referring to her Conversational Framework, Laurillard constructs a pedagogic case for modelling as a productive student activity but provides few references to current practice and available resources. This paper seeks to complement her account by highlighting the pioneering initiatives of the Computers in the Curriculum Project and more recent developments in systems modelling within geographic and business education. The latter include improvements to system dynamics modelling programs such as STELLA®, the publication of introductory textbooks, and the emergence of online resources. The paper indicates several ways in which modelling activities may be approached and identifies some educational development roles for learning technologists. The paper concludes by advocating simulation modelling as an exemplary use of learning technologies - one that realizes their creative-transformative potential.

  10. The number of Japanese radiologic technologists will be increased in 40 years.

    Science.gov (United States)

    Araseki, Miwa; Yokooka, Yuki; Ishikawa, Tomoki; Ogasawara, Katsuhiko

    2013-07-01

    It is essential to predict the long-term supply and demand for the number of radiologic technologists as medical resources. However, it is difficult to predict the number of Japanese radiologic technologists due to complex and intertwining factors. Our purpose in this study was to predict the future number of radiologic technologists using the concept of system dynamics (SD), and to clarify the effects of relevant factors. In order to estimate the number of Japanese radiologic technologists, we constructed a flow diagram using the concept of SD. We simulated the number of radiologic technologists for the following 4 cases: maintaining the status quo, a change in the pass rate for the national examination, a change in the post-graduate employment rate, and a change in the rate of continuing education. The result for the predicted number of radiologic technologists was 50,509 in 20 years, which is 4,394 (9.5%) more than the present number, and 50,166 in 40 years, which is 4,051 (8.8%) more than the present number. For the factors influencing the number of technologists, the influence of the pass rate on the national examination and that of the rate for post-graduate employment was larger than that of the rate of continuing education in graduate school. The number of Japanese radiologic technologists will increase until 2033 and decrease until 2042, and it does not change after 2042 in case of maintaining the status quo. Implementing the concept of SD allowed us easily to clarify the factors influencing the predicted number of radiologic technologists.

  11. A study on the civil liability of radiological technologist in medical malpractice

    International Nuclear Information System (INIS)

    Lim, Chang Seon

    1995-01-01

    Recently the suits for medical malpractice are gradually increasing in this country. The main purpose of this study is to excavate the most suitable theories about civil liabilities on medical malpractice by radiological technologist. To solve the above-mentioned problems in medical malpractice, I have proceeded to make a survey of traditional theories and tried to excavate the most suitable theories for our medical circumstances among those theories. Both domestic and foreign relevant professional literatures and legal cases were investigated in this study. Several important findings of this study are as follows. First, the nature of legal interrelationship between radiological technologist and physician(or the representative of a hospital) is to define the content of employment. But in the eye of medical law, the interrelationship between radiological technologist and physician is written that radiological technologist should be directed by physician. Second, the nature of legal interrelationship between patient and physician(or the representative of a hospital) is to define the content of legal obligation of physician(or the representative of a hospital), and radiological technologist execute his obligation as proxy for physician. Therefore, patient can not clame any legal right to radiological technologist. Third, radiological technologist has the obligation of Due Care in medical practice. Fourth, on the medical malpractice by radiological technologist the civil liability can be treated as either tortious liability or contractual liability, and physician (or the representative of hospital) take the responsibility for the damage compensation. In this case, physician has the right of indemnity to radiological technologist. But it should be dinied or extremely limited

  12. Clinical protocol for conducting a bone scintigraphy subsequent SPECT/CT examination

    International Nuclear Information System (INIS)

    Jovanovska, A.; Dimcheva, M.; Doldurova, M.

    2013-01-01

    Full text: Introduction: Like any nuclear medicine study, bone scintigraphy is a diagnostic procedure associated with intravenous injection of a radioactive isotope with low activity - radiopharmaceutical. But recently in clinical practice hybrid imaging methods such as SPECT/ CT (Single Photon Emission Tomography - Computed Tomography) has necessitated, as they provide comprehensive information about the function and structure of the studied organ. Materials and methods: In the Department of Nuclear Medicine in The Specialized Hospital for Active Treatment of Oncology Diseases in Sofia it is installed a two-detector SPECT/CT gamma camera Siemens Symbia T2, on which the whole range of nuclear medicine studies in oncology practice is held: bone scintigraphy, 99mTc - MIBI scintigraphy, Lymphoscintigraphy, somatostatin receptor scintigraphy, tireostsintigraphy with 131I/99mTc, dynamic nephroscintgraphy etc. The working algorithm upon choosing the clinical protocols, and setting the parameters for scanning are complied with the requirements and recommendations established by the nuclear medicine standard. The presented are results from studies of patients when after whole body bone scintigraphy, an additional SPECT/CT study was conducted for more accurate diagnostic and interpretation of the results. Results: Practical introduction of hybrid imaging methods require from technicians besides knowledge in working with radioactive sources and practical skills such as: the selection of the matrix size, number of projections, choice of trajectory - circular or elliptical, set the appropriate degree of rotation of the detector (180 or 360). Particularly important in the processing of MR images is the appropriate choice of algorithm of reconstruction: filtered backprojection or iterative reconstruction methods. In MR images processing there is no rule for the optimal filter, which is why the quality of the reconstructed image depends primarily on the experience of the operator

  13. The role of radiologic technologist in radiation protection and quality assurance programs

    International Nuclear Information System (INIS)

    Djurovic, B.; Spasci -Jokic, V.; Misovic, M.

    2001-01-01

    The most important sources of ionizing radiation for general public are medical sources. Good working protocols and radiological protections measurements provided significant reduction of patients and professional doses. Medical users of ionizing radiation are radiological technologists. The purpose of this paper is to point out to several facts and errors in radiation protection educational programs for radiological technologists. Medical College educational program covers main specific topics in radiation protection, but there are some omissions in training process. Radiological technologists must be actively involved in radiation protection. Following ethical standards they will reach higher standards than the law requires

  14. Exercise thallium-201 scintigraphy in the diagnosis and prognosis of coronary artery disease

    International Nuclear Information System (INIS)

    Kotler, T.S.; Diamond, G.A.

    1990-01-01

    The objective of this study is to determine the discriminant accuracy of exercise thallium-201 myocardial perfusion scintigraphy for the diagnosis and prognosis of patients with known or suspected coronary artery disease. This is a survey of the National Library of Medicine MEDLINE database. The key medical subject headings used were coronary disease, myocardial infarction, radionuclide imaging, and thallium. A total of 122 retrieved studies were considered relevant and were reviewed in depth. Only studies reporting both the sensitivity and specificity of thallium scintigraphy were analyzed. Discriminant accuracy for diagnosis and prognosis was summarized in terms of pooled sensitivity and specificity. Exercise thallium scintigraphy is useful in the noninvasive diagnosis of coronary artery disease, especially in patients with abnormal resting electrocardiograms, restricted exercise tolerance, and intermediate probability of having disease at the time of testing as well as of defining the prognosis of patients with known or suspected coronary artery disease, especially in those with previous myocardial infarction. Because of various shortcomings in the published record, however, the marginal discriminant accuracy and cost effectiveness of thallium scintigraphy compared with conventional clinical assessment and exercise electrocardiography remain controversial. 193 references

  15. The effection of nuclear medicine in the diagnosis and treat of breast cancer

    International Nuclear Information System (INIS)

    Wang Xiuling; Hou Xiancun; Xu Kai

    2006-01-01

    The incidence of breast cancer has been increasing recently. Nuclear Medicine plays an important role in the diagnosis and treat of breast cancer: breast scintigraphy in the diagnosis of breast cancer, the detection of sentinel lymph node using radioisotope, skeleton scintigraphy in the diagnosis of osseous metastasis, the application of PET in breast cancer, for instance. (authors)

  16. Fever of unknown origin: prospective comparison of diagnostic value of 18F-FDG PET and 111In-granulocyte scintigraphy

    DEFF Research Database (Denmark)

    Kjaer, Andreas; Lebech, Anne-Mette; Eigtved, Annika

    2004-01-01

    The diagnostic work-up in patients with fever of unknown origin (FUO) is often challenging and frequently includes nuclear medicine procedures. Whereas a role for leucocyte or granulocyte scintigraphy in FUO is generally accepted, a possible role of fluorine-18 fluorodeoxyglucose (FDG) positron...... emission tomography (PET) in these patients remains to be established. To study this, we compared prospectively, on a head-to-head basis, the diagnostic value of FDG-PET and indium-111 granulocyte scintigraphy in patients with FUO. Nineteen patients with FUO underwent both FDG-PET and (111)In......-granulocyte scintigraphy within 1 week. FDG-PET scans and granulocyte scintigrams were reviewed by different doctors who were blinded to the result of the other investigation. The diagnostic values of FDG-PET and granulocyte scintigraphy were evaluated with regard to identification of a focal infectious...

  17. Comparison of FDG-PET/CT and bone scintigraphy for detection of bone metastases in breast cancer

    Energy Technology Data Exchange (ETDEWEB)

    Hahn, Steffen; Heusner, Till; Forsting, Michael; Antoch, Gerald (Dept. of Diagnostic and Interventional Radiology and Neuroradiology, Univ. Hospital Essen, Univ. Duisburg-Essen, Essen (Germany)), email: steffen.hahn@uk-essen.de; Kuemmel, Sherko; Koeninger, Angelika (Dept. of Gynecology and Obstetrics, Univ. Hospital Essen, Univ. Duisburg-Essen, Essen (Germany)); Nagarajah, James; Mueller, Stefan; Boy, Christian; Bockisch, Andreas; Stahl, Alexander (Dept. of Nuclear Medicine, Univ. Hospital Essen, Univ. Duisburg-Essen, Essen (Germany))

    2011-11-15

    Background Bone scintigraphy is the standard procedure for the detection of bone metastases in breast cancer patients. FDG-PET/CT has been reported to be a sensitive tool for tumor staging in different malignant diseases. However, its accuracy for the detection of bone metastases has not been compared to bone scintigraphy. Purpose To compare whole-body FDG-PET/CT and bone scintigraphy for the detection of bone metastases on a lesion basis in breast cancer patients. Material and Methods Twenty-nine consecutive women (mean age 58 years, range 35-78 years) with histologically proven breast cancer were assessed with bone scintigraphy and whole-body FDG-PET/CT. Twenty-one patients (72%) were suffering from primary breast cancer and eight patients (28%) were in aftercare with a history of advanced breast cancer. Both imaging procedures were assessed for bone metastases by a radiologist and a nuclear medicine physician. Concordant readings between bone scintigraphy and FDG-PET/CT were taken as true. Discordant readings were verified with additional MRI imaging in all patients and follow-up studies in most patients. Results A total of 132 lesions were detected on bone scintigraphy, FDG-PET/CT or both. According to the reference standard, 70/132 lesions (53%) were bone metastases, 59/132 lesions (45%) were benign, and three lesions (2%) remained unclear. The sensitivity of bone scintigraphy was 76% (53/70) compared to 96% (67/70) for FDG-PET/CT. The specificity of bone scintigraphy and FDG-PET/CT was 95% (56/59) and 92% (54/59), respectively. According to the reference standard bone metastases were present in eight out of the 29 patients (28%), whereas 20 patients (69%) were free of bone metastases. One (3%) patient had inconclusive readings on both modalities as well as on MRI and follow-up studies. Bone scintigraphy and FDG-PET/CT correctly identified seven out of eight patients with bone metastases and 20 out of 20 patients free of metastases. Conclusion On a lesion

  18. Indications for scintigraphy with 67Ga

    International Nuclear Information System (INIS)

    Plechl, S.C.; Berges, G.; Blut, J.; Bohle, H.; Gessat, C.; Hethey, B.; Linneborn, G.; Ostermann, W.; Prack, G.; Scheitza, B.

    1976-01-01

    The validity and exactness of 67 Ga scintigraphy was tested in more than 70 patients by a comparison with clinical, radiological and histological findings as well as with scintigraphs obtained with other nuclides. It was found that 67 Ga scintigraphy is a good and often even a vital supplementation to the other methods. Its main field of application, according to the authors' obervations, is the differential diagnosis of three-dimensional changes in the thorax region, in particular the diagnosis of malignant tumours of the lungs in combination with X-ray examinations. Furthermore, 67 Ga may be of use in localization diagnoses of non-malignant changes, e.g. abscesses. 67 Ga scintigraphy, which is non-hazardous and does not involve discomfort to the patients, appears to be particularly useful for course control after surgical treatment of breast cancer and for early diagnoses of metastases, provided that examination starts early enough and is repeated at regular intervals, not only in the soft parts but also in the skeleton. The question whether 67 Ga scintigraphy may be a substitute for scintigraphy with other nuclides in these fields still remains to be solved. (orig.) [de

  19. Recent advances in gastric emptying scintigraphy

    International Nuclear Information System (INIS)

    Urbain, J.L.C.; Mayeur, S.M.

    1996-01-01

    Gastric emptying scintigraphy was introduced more than 25 years ago by Grittith and still remains the gold standard to assess gastric emptying. Test meals, radiopharmaceuticals and acquisition procedures have been refined and optimized over the years and the test procedure is now pretty well standardized. However, in its most common use, gastric emptying scintigraphy provides little information on gastric physiology. Over the last decade, modelling of the liquid and solid emptying curves have brought some insight in the complex gastric physiology. Compartmental analysis of the stomach has also provided information on the pathophysiological mechanisms of delayed gastric emptying. Over the past 5 years, the most dramatic development in gastric emptying scintigraphy has been the introduction of Digital Antral Scintigraphy (DAS). Digital Antral scintigraphy basically consists in dynamically imaging of the stomach and the use of a refined Fourier transform processing method. This new procedure allows for the visualization of antral contractions and, alike manometry, permits quantitative characterization on the frequency and amplitude of these contractions. Overall, this new procedure provides a unique, non invasive tool to characterize gastric motility, to define the pathophysiologic mechanisms of gastric motor disorders and to evaluate the effect of new gastro-kinetic compounds. (authors). 241 refs., 5 figs

  20. Indications for scintigraphy with /sup 67/Ga

    Energy Technology Data Exchange (ETDEWEB)

    Plechl, S C; Berges, G; Blut, J; Bohle, H; Gessat, C; Hethey, B; Linneborn, G; Ostermann, W; Prack, G; Scheitza, B [Berufsgenossenschaftliche Krankenanstalten Bergmannsheil, Bochum (Germany, F.R.)

    1976-06-01

    The validity and exactness of /sup 67/Ga scintigraphy was tested in more than 70 patients by a comparison with clinical, radiological and histological findings as well as with scintigraphs obtained with other nuclides. It was found that /sup 67/Ga scintigraphy is a good and often even a vital supplementation to the other methods. Its main field of application, according to the authors' obervations, is the differential diagnosis of three-dimensional changes in the thorax region, in particular the diagnosis of malignant tumours of the lungs in combination with X-ray examinations. Furthermore, /sup 67/Ga may be of use in localization diagnoses of non-malignant changes, e.g. abscesses. /sup 67/Ga scintigraphy, which is non-hazardous and does not involve discomfort to the patients, appears to be particularly useful for course control after surgical treatment of breast cancer and for early diagnoses of metastases, provided that examination starts early enough and is repeated at regular intervals, not only in the soft parts but also in the skeleton. The question whether /sup 67/Ga scintigraphy may be a substitute for scintigraphy with other nuclides in these fields still remains to be solved.

  1. Myocardial scintigraphy with thallium-201

    International Nuclear Information System (INIS)

    Schwaiger, M.; Silber, S.; Klein, U.; Rudolph, W.

    1980-01-01

    Thallium-201 myocardial scintigraphy is an important non-invasive method for assessment of coronary artery disease. Other applications of the method such as delineation of the right ventricular free wall in right ventricular overload, or the detection of hypertrophic cardiomyopathies or myocardial infiltrations are of subordinate importance. In heart disease such as congestive cardiomyopathy and mitral valve prolapse thallium-201 uptake defects have been described, the clinical implications of these findings, however, cannot be adequately interpreted at this time. Myocardial uptake of thallium-201 is an active process, dependent on and proportional to perfusion. Differentiation between myocardial ischemia and myocardial scar is based on the presence or absence of thallium-201 'redistribution'. That is, in the presence of acute reversible ischemia there is increased thallium-201 uptake in the post-ischemic phase in previously hypoperfused myocardium and, subsequently, equilibrium of the initially registered activity differences. 'Redistribution' has also been described in the resting scintigram of patients with severe coronary artery disease and chronic hypoperfusion. (orig.) [de

  2. Functional scintigraphy of the thyroid

    International Nuclear Information System (INIS)

    Baehre, M.; Emrich, D.

    1983-01-01

    In order to obtain more diagnostic information by thyroid scintigraphy we used a gamma camera with a high resolution collimator and a computer. This led to an improvement of thyroid scintigrams and their documentation. Additionally it allowed to obtain values for global and regional uptake of pertechnetate before and under suppression. The usefulness of this method was proven by investigation of 50 individuals with normal thyroid function and 32 euthyroid patients with pathological suppressibility in an area of iodine deficiency. In normals global thyroid uptake and its suppression correlated with the FT 4 I and Δ TSH after TRH in dependence of their iodine excretion. Three types of pathological reaction under suppression could be delineated: 1. pure focal autonomy, 2. generalized (disseminated) autonomy, 3. combined focal and disseminated autonomy. The means of Δ TSH decreased stepwise from group 1 to 3 indicating increasing autonomy. The method is predominantly helpful to detect autonomy in euthyroid goitre. It is superior to qualitative evaluation of scintigrams. Additionally it is useful for decisions in therapy, especially for functionally orientated operation. (orig.) [de

  3. Rater agreement in lung scintigraphy

    International Nuclear Information System (INIS)

    Christiansen, F.; Andersson, T.; Rydman, H.; Qvarner, N.; Maare, K.

    1996-01-01

    Purpose: The PIOPED criteria in their original and revised forms are today's standards in the interpretation of ventilation-perfusion scintigraphy. When the PIOPED criteria are used by experienced raters with training in consensus interpretation, the agreement rates have been demonstrated to be excellent. Our purpose was to investigate the rates of agreement between 2 experienced raters from different hospitals who had no training in consensus interpretation. Material and Methods: The 2 raters investigated a population of 195 patients. This group included 72 patients from a previous study who had an intermediate probability of pulmonary embolism and who had also been examined by pulmonary angiography. Results: The results demonstrated moderate agreement rates with a kappa value of 0.54 (0.45-0.63 in a 95% confidence interval), which is similar to the kappa value of the PIOPED study but significantly lower than the kappa values of agreement rates among consensus-trained raters. There was a low consistency in the intermediate probability category, with a proportional agreement rate of 0.39 between the experienced raters. Conclusion: The moderate agreement rates between raters from different hospitals make it difficult to compare study populations of a certain scintigraphic category in different hospitals. Further investigations are mandatory for accurate diagnosis when the scintigrams are in the category of intermediate probability of pulmonary embolism. (orig.)

  4. Sequential Scintigraphy in Renal Transplantation

    Energy Technology Data Exchange (ETDEWEB)

    Winkel, K. zum; Harbst, H.; Schenck, P.; Franz, H. E.; Ritz, E.; Roehl, L.; Ziegler, M.; Ammann, W.; Maier-Borst, W. [Institut Fuer Nuklearmedizin, Deutsches Krebsforschungszentrum, Heidelberg, Federal Republic of Germany (Germany)

    1969-05-15

    Based on experience gained from more than 1600 patients with proved or suspected kidney diseases and on results on extended studies with dogs, sequential scintigraphy was performed after renal transplantation in dogs. After intravenous injection of 500 {mu}Ci. {sup 131}I-Hippuran scintiphotos were taken during the first minute with an exposure time of 15 sec each and thereafter with an exposure of 2 min up to at least 16 min.. Several examinations were evaluated digitally. 26 examinations were performed on 11 dogs with homotransplanted kidneys. Immediately after transplantation the renal function was almost normal arid the bladder was filled in due time. At the beginning of rejection the initial uptake of radioactive Hippuran was reduced. The intrarenal transport became delayed; probably the renal extraction rate decreased. Corresponding to the development of an oedema in the transplant the uptake area increased in size. In cases of thrombosis of the main artery there was no evidence of any uptake of radioactivity in the transplant. Similar results were obtained in 41 examinations on 15 persons. Patients with postoperative anuria due to acute tubular necrosis showed still some uptake of radioactivity contrary to those with thrombosis of the renal artery, where no uptake was found. In cases of rejection the most frequent signs were a reduced initial uptake and a delayed intrarenal transport of radioactive Hippuran. Infarction could be detected by a reduced uptake in distinct areas of the transplant. (author)

  5. Gamma-scintigraphy; La gammascintigraphie

    Energy Technology Data Exchange (ETDEWEB)

    Desgrez, H.A. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1960-06-15

    Gamma-scintigraphy is a medical technique making it possible to fix the image of certain organs after the concentration in these of emitting radioactive products. It is already widely used in the case of the thyroid gland with iodine-132 by applying the isotope iodine 131. The study of the liver and gall bladder is carried out using colloidal gold 198 and Bengal pink marked with iodine 131. Serum albumin marked with iodine 131 makes it possible to study rachidian blockages. Other applications can already be foreseen in this direction. (author) [French] La gammascintigraphie est une technique medicale permettant de faire l'image de certains organes apres concentration dans ceux-ci de produits radioactifs emetteurs. Son utilisation deja repandue en ce qui concerne la thyroidine et l'iode-131 est possible avec l'iode-132 pour cette meme glande. Avec l'or colloidal 198 et le rose bengale marque a l'iode-131, on pratique des etudes du foie et de la vesicule biliaire. La serumalbumine marquee a l'iode-131 permet d'etudier les blocages rachidiens. D'autres possibilites sont des maintenant envisageables dans cette direction. (auteur)

  6. Gamma-scintigraphy; La gammascintigraphie

    Energy Technology Data Exchange (ETDEWEB)

    Desgrez, H A [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1960-06-15

    Gamma-scintigraphy is a medical technique making it possible to fix the image of certain organs after the concentration in these of emitting radioactive products. It is already widely used in the case of the thyroid gland with iodine-132 by applying the isotope iodine 131. The study of the liver and gall bladder is carried out using colloidal gold 198 and Bengal pink marked with iodine 131. Serum albumin marked with iodine 131 makes it possible to study rachidian blockages. Other applications can already be foreseen in this direction. (author) [French] La gammascintigraphie est une technique medicale permettant de faire l'image de certains organes apres concentration dans ceux-ci de produits radioactifs emetteurs. Son utilisation deja repandue en ce qui concerne la thyroidine et l'iode-131 est possible avec l'iode-132 pour cette meme glande. Avec l'or colloidal 198 et le rose bengale marque a l'iode-131, on pratique des etudes du foie et de la vesicule biliaire. La serumalbumine marquee a l'iode-131 permet d'etudier les blocages rachidiens. D'autres possibilites sont des maintenant envisageables dans cette direction. (auteur)

  7. Survey on medical information education for radiologic technologists working at hospitals

    International Nuclear Information System (INIS)

    Ikeda, Ryuji; Ogasawara, Katsuhiko; Okuda, Yasuo; Konishi, Yasuhiko; Ohoba, Hisateru; Hoshino, Shuhei; Hosoba, Minoru

    2011-01-01

    Recently, the importance of medical information for radiologic technologists has increased. The purpose of this questionnaire survey was to clarify the method of acquiring skill in medical information for radiologic technologists from the point of view of the managers of radiology departments. The questionnaire was sent to 260 hospitals that had introduced picture archiving and communication systems (PACSs) for the person responsible for medical information in the radiology department. The response rate was 35.4% (92 hospitals). The results of this survey clarified that few hospital have staff for medical information in the radiology department. Nevertheless, the excellent staff who have the skills to troubleshoot and develop systems are earnestly needed in radiology departments. To solve this problem, many technologists should understand the content, work load, and necessity of medical information. In addition, cooperation between radiologic technologist schools and hospitals is important in the field of medical information education. (author)

  8. A Matlab Tool for Tumor Localization in Parathyroid Sestamibi Scintigraphy

    Directory of Open Access Journals (Sweden)

    M. Đurović

    2015-11-01

    Full Text Available Submarine method for localization of parathyroid tumors (PT has proved to be effective in case of typical pitfalls of conventional scintigraphic methods (combined subtraction and double phase methods. It uses images obtained by standard dynamic parathyroid sestamibi scintigraphy suggested by European Association of Nuclear Medicine. This paper presents: 1 the developed Matlab interface that enables the implementation and evaluation of algorithms for the automatic application of Submarine method; 2 the algorithm for automatic extraction of the entire thyroid region from the background radioactivity using operations from mathematical morphology applied on dynamic scintigrams; 3 the results obtained by algorithm for localization and visualization of PTs based on estimation of exponential decreasing trend of time-activity curves. The algorithm was tested on a group of 20 patients with histopathologically proven PTs using developed Matlab interface.

  9. Status of education and training of radiotherapy and x-ray technologists in India

    International Nuclear Information System (INIS)

    Sanu, K.K.; Sankaran, A.; Murthy, M.S.S.

    1995-01-01

    Training of technologists in the field of radiation therapy is of great importance as they are the personnel operating the therapy equipment and thereby responsible for the accurate delivery of radiation dose to cancer patients. In India, the Atomic Energy Regulatory Board (AERB) constituted by Government of India under the Atomic Energy Act (1962) and Radiation Protection Rules (1971) to enforce legislation concerning radiation, is the competent authority which stipulates the qualification requirements of technologists. 3 tabs

  10. Association of Lifestyle with Physical and Mental Health in Japanese Radiological Technologists

    OpenAIRE

    Tahara, Hiroyuki; Kondo, Hisayoshi; Ueya, Etsuo

    2003-01-01

    To elucidate the effects of low-dose radiation exposure and lifestyle on physical health and mental health, we evaluated the relationship of age, cumulative radiation dose, and lifestyle (cigarette smoking, alcohol drinking and physical exercise) to physical and mental health in Japanese radiological technologists. The study subjects were 932 Japanese radiological technologists who participated in a health study from 1981 to 1985. A self-administered questionnaire was mailed to each subject t...

  11. Nuclear medicine in sports

    International Nuclear Information System (INIS)

    Sharma, Anshu Rajnish

    2010-01-01

    Nuclear medicine can synergistically contribute to the sports medicine field, in the management of sports-related stress injures. Bone scintigraphy is commonly requested for evaluation of athletes with pain. Three-Phase 99m Tc MDP Bone Scan has emerged as the imaging reference standard for diagnosing such injuries. The inherently high-contrast resolution of the bone scan allows early detection of bone trauma and becomes positive within six to seventy-two hours after the onset of symptoms. The bone scan is able to demonstrate stress injuries days to weeks before the radiograph

  12. Bone scintigraphy in systemic and metabolic diseases

    International Nuclear Information System (INIS)

    Engels, H.J.; Schmidt, H.A.E.

    1984-01-01

    Bone scintigraphy is a very sensitive method to identify pathological processes affecting the bone. Its specificity is, however, considerably lower than its sensitivity, particularly in systemic diseases. We therefore investigated the possibilities of differential diagnosis based on typical sites or patterns of distribution. The Paget syndrome with characteristic manifestation in the pelvic region, including crutch-shaped accumulation in the proximal femur, may be diagnosed by scintigraphy alone. If these typical sites are absent, however, differential diagnosis is difficult. Differential diagnosis for multiple myeloma, fibrous dysplasia, enchondromatosis, hyperparathyroidism, osteopathies, osteomalacia, inflammatory rheumatic diseases is also required and should be based on further examinations, taking into consideration the history, clinical signs and course. In this connexion scintigraphy is relevant both for early assessment and documentation of the spread of pathological processes and for the follow-up. (orig.) [de

  13. Perfusion scintigraphy in acute myocardial infarction

    International Nuclear Information System (INIS)

    Schricke, U.; Schwaiger, M.; Kastrati, A.; Schoemig, A.

    1999-01-01

    The Tc-99m sestamibi perfusion SPECT scintigraphy in acute myocardial infarction is a feasible method to assess the size of area at risk and the residual blood flow to this area as the most important determinants of final infarct size without any delay in treatment. In combination with a follow-up study final infarct size as well as myocardial salvage can be quantified. Clinical indications for the use of Tc-99m sestamibi scintigraphy are the noninvasive identification of arterial occlusion in patients suspected to acute myocardial infarction without electrocardiographic ST-elevation and the assessment of reperfusion success. In clinical trials Tc-99m sestamibi scintigraphy has proven to be a useful method to assess the impact of varying reperfusion therapies. The present review article discusses the indication, the study protocol, the interpretation of results and the clinical and scientifically importance of this method. (orig.) [de

  14. Nuclear Medicine week in Colombia

    International Nuclear Information System (INIS)

    Padhy, A.K.

    2003-01-01

    During the week of 6-12 October 2003 the IAEA organized a Research Coordination Meeting on 'Relationship between lower Respiratory Tract Infection, Gastroesophageal reflux and bronchial Asthma in children' at Hospital San Ignacio in Bogota. Besides there were four workshops in Bogota; workshops on Bone infection and Bone scan in Pediatric ortopaedics at Hospital Militar and Fundacion CardioInfantil, a workshop for Nuclear Medicine Technologists and a workshop on Sentinel Lymph Node mapping and Surgical Gamma Probe Application at Institute of Oncology. A nuclear cardiology workshop was organized in Medellin, and finally crowning them all was the 9th Congress of the Colombian Association of Nuclear Medicine at Cali from 10-12 October, 2003; probably the largest and best Colombian nuclear medicine congress every held in the country. A workshop was also organized in Cali for nuclear medicine technologists in conjunction with the Annual Convention. It was a mix of IAEA's Technical Cooperation and Regular Budget activities along with the activities of Colombian Association of Nuclear Medicine, bringing in absolute synergy to galvanize the entire nuclear medicine community of the country. The week saw nuclear medicine scientists from more than 20 IAEA Member States converging on Colombia to spread the message of nuclear medicine, share knowledge and to foster International understanding and friendship among the nuclear medicine people of the world

  15. Evaluation of Stress and a Stress-Reduction Program Among Radiologic Technologists.

    Science.gov (United States)

    Reingold, Lynn

    2015-01-01

    To investigate stress levels and causes of stress among radiologic technologists and determine whether an intervention could reduce stress in a selected radiologic technologist population. Demographic characteristics and data on preintervention stress sources and levels were collected through Internet-based questionnaires. A 6-week, self-administered, mindfulness-based stress-reduction program was conducted as a pilot intervention with 42 radiologic technologists from the Veterans Administration Medical Center. Data also were collected postintervention. Identified sources of stress were compared with findings from previous studies. Some radiologic technologists experienced improvement in their perceptions of stress after the intervention. Sources of stress for radiologic technologists were similar to those shown in earlier research, including inconsistent management, poor management communication, conflicting demands, long work hours, excessive workloads, lack of work breaks, and time pressures. The mindfulness-based stress-reduction program is an example of an inexpensive method that could improve personal well-being, reduce work errors, improve relationships in the workplace, and increase job satisfaction. More research is needed to determine the best type of intervention for stress reduction in a larger radiologic technologist population.

  16. Role of renal scintigraphy in the functional evaluation of ectopic kidneys as compared to intravenous urography and ultrasonography

    International Nuclear Information System (INIS)

    Malhotra, G.; Das, B.K.; Pradhan, P.K.; Kaushik, A.

    2002-01-01

    Aim: Ectopic kidneys are mainly diagnosed by Ultrasonography (US) and/or Intravenous urography (IVU) but a functional study using a radionuclide can provide much useful additional information. The objective of this retrospective study was to analyze and compare the information obtained from anatomical investigations like IVU and US with that obtained from a functional study. Materials and Methods: 44 patients (26 males and 18 females) in the age ranging from 2-53 yr. and involving 53 ectopic kidney units were included in the study. All patients underwent renal dynamic scintigraphy with either Tc-99m EC or Tc-99m DTPA after adequate hydration. US report was available in 35 and IVU in 31 kidney units. All investigations were evaluated independent of each other. Results: Out of 53 units 31 were left ectopic (26 simple and 5 crossed) while 21 were right ectopic (18 simple and 3 crossed). One grossly hydronephrotic was seen on ultrasound but not on scintigraphy.26/53 units showed adequate or normal function and drainage. 19/53 units showed obstructive uropathy. 7 units had negligible function. 28/35 units that underwent both ultrasonography and scintigraphy showed concordant findings as far as localization of the kidney was concerned while 7/35 units showed discordant findings. 20/31 units showed discordant findings in scintigraphy as compared to IVU. Of these 9 units were non-visualized on I.V.U but showed adequate function and clearance in renal scintigraphy. In 11/31 units Nuclear Medicine findings corroborated with those of IVU. Conclusion: Nuclear Medicine studies provide reliable anatomic information comparable to IVU and USS and more reliable pathophysiological information. Thus in conjunction with USS and IVU, renal dynamic scintigraphy can play a very important role in the evaluation of ectopic kidneys

  17. Bone-scintigraphy in painful bipartite patella

    International Nuclear Information System (INIS)

    Iossifidis, A.; Brueton, R.N.; Nunan, T.O.

    1995-01-01

    Although, the use of technetium scintigraphy in the assessment of anterior knee pain has been described, no reference has been made to the scintigraphic appearances of painful bipartite patella. We report the scintigraphic-appearances of painful bipartite patella in 25-year-old man a 2 1/2 years history of unexplained patellar pain. Painful bipartite patella is a rare cause of chronic post-traumatic patellar pain. Bone scintigraphy, by demonstrating increased uptake by the painful accessory bipartite fragment, appears to be an imaging method of choice in the diagnosis of this condition. (orig./MG)

  18. Quantitative whole body scintigraphy - a simplified approach

    International Nuclear Information System (INIS)

    Marienhagen, J.; Maenner, P.; Bock, E.; Schoenberger, J.; Eilles, C.

    1996-01-01

    In this paper we present investigations on a simplified method of quantitative whole body scintigraphy by using a dual head LFOV-gamma camera and a calibration algorithm without the need of additional attenuation or scatter correction. Validation of this approach to the anthropomorphic phantom as well as in patient studies showed a high accuracy concerning quantification of whole body activity (102.8% and 97.72%, resp.), by contrast organ activities were recovered with an error range up to 12%. The described method can be easily performed using commercially available software packages and is recommendable especially for quantitative whole body scintigraphy in a clinical setting. (orig.) [de

  19. Biliary scintigraphy in neonatal cytomegalovirus cholestasis

    International Nuclear Information System (INIS)

    Tadzher, I.S.; Grujovska, S.; Todorovski, G.; Josifovska, T.; Arsovska, S.

    1996-01-01

    Diagnostic value of hepatobiliary scintigraphy using mebrofenin-Te-99m was assessed in three newborns with cytomegalovirus (CMV) hepatitis and one baby with hepatitis B jaundice. All cases were affected by persistent jaundice with predominately conjugated bilirubin, alcoholic stools, anemia. One of this newborns (case number 1) was suspected of having biliary atresia due to the absence of intestinal excretion of the tracer. After three weeks intestinal passage was seen in scintiscan late after 24 h. Hepatobiliary scintigraphy represents a non-invasive diagnostic procedure which enables the detection of permeability of the biliary tract. (Author)

  20. Scintigraphy and ultrasonography of various thyroid diseases

    International Nuclear Information System (INIS)

    Ban, Yoshio; Nagakura, Hozumi; Kawauchi, Akihiro; Fukunari, Nobuhiro; Itoh, Kunihiko; Higashi, Tomomitsu.

    1987-01-01

    We reported the usefulness of scintigraphy and ultrasonography of various thyroid diseases. The scintigraphy were useful information in the determination of functioning adenoma, location of ectopic thyroid glands and appearance of lang and bone metastasis of thyroid carcinoma. As ultrasonography were able to be observation of internal structure of thyroid gland, that maight be used to determined associated nodular lesions in diffuse goiter and differentiation between benign and malignant tumor in nodular goiter. In observation of calcifications of goiter, soft X rays apparatus were usefull tool. US, as initial diagnostic test before scintiscanning, provided useful information and minimized radiation exposure. (author)

  1. Radioaerosol lung scintigraphy in idiopathic scolios

    International Nuclear Information System (INIS)

    Maini, C.L.; Giordano, A.; Santucci, B.; Aulisa, L.; Pistelli, R.; Fuso, L.

    1988-01-01

    The study of respiratory fuctions is of key importance for the clinical evaluation of patients with idiopathic scoliosis. Such study has been traditionally based on classical pulmonary function tests and arterial hemogasanalysis. However, neither procedure gives any information on the topographical distribution of abnormalities, and both might be suboptimal as far as sensitivity is concerned. The preliminary results obtained with radioaerosol lung scintigraphy in 11 patients with scoliosis are here presented. They lead to the conclusion that radioaerosol lung scintigraphy, besides being an useful adjunct to more traditional diagnostic procedures, can yield unique information on the localization of convective ventilation derangements induced by the dynamic abnormalities of the rib cage

  2. Indium 111 leucocyte scintigraphy in abdominal sepsis

    International Nuclear Information System (INIS)

    Baba, A.A.; McKillop, J.H.; Gray, H.W.; Cuthbert, G.F.; Neilson, W.; Anderson, J.R.

    1990-01-01

    We have studied the clinical utility of indium 111 autologous leucocyte scintigraphy retrospectively in 45 patients presenting with suspected intra-abdominal sepsis. The sensitivity was 95% (21/22) and the specificity was 91% (21/23). Some 34 of the studies (17 positive and 17 negative) were considered helpful in furthering patient management (76%) and 8, unhelpful (18%). In 3, the study results were misleading and led to inappropriate treatment. Indium 111 scintigraphy, whether positive or negative, provides information in patients with suspected intra-abdominal sepsis upon which therapeutic decisions can be based. (orig.)

  3. Gallium-67 scintigraphy in borderline lepromatous leprosy

    International Nuclear Information System (INIS)

    Mouratidis, B.; Lomas, F.E.

    1993-01-01

    A middle aged woman with a pyrexia of unknown origin was shown to have borderline lepromatous leprosy. Early gallium-67 scintigraphy demonstrated increased uptake in the subcutaneous tissues of the face and thighs. As a result of these findings skin biopsy was obtained from the right thigh which gave a diagnosis of borderline lepromatous leprosy. The authors have been unable to find other reports of gallium-67 scintigraphy in leprosy but the pattern of gallium-67 distribution should suggest the diagnosis. 5 refs., 1 fig

  4. Osseous scintigraphy and auxiliary graft. Scintigraphie osseuse et greffe d'appoint

    Energy Technology Data Exchange (ETDEWEB)

    Khelifa, F.; Siles, S. (Hopital de la Timone, 13 - Marseille (France)); Puech, B.

    1992-12-01

    The scintigraphy could be a good way to survey the osseous graft: three cases are studied in which were recognized the presence of a graft, surinfection, graft lysis, pseudo-arthrosis, algodystrophy. 8 refs., 5 figs.

  5. Use of analogues to build technologists' confidence: NAnet

    International Nuclear Information System (INIS)

    Noseck, Ulrich

    2008-01-01

    processes occurring at the geosphere-biosphere interface and in the surface environment. One of the primary outputs of the NAnet project has been the compilation of reviews of more than 70 individual analogue studies with relevance for the near-field, far field or biosphere. Each analogue study review was documented using a standard review template that includes sections concerned with performance assessment relevance and applications, limitations of the analogue, a summary of any particular quantitative information derived from the study, an assessment of the uncertainties associated with the qualitative and quantitative information, an indication of the time-scales covered by the analogue and reference to any applications in communication and links to the primary literature. A simple referencing system was developed that enables safety assessors and communication specialists rapidly to find all those analogues that relate to their specific issues and interests. It is based on a simple matrix that has on one axis the range of materials and on the other axis the range of processes that can occur in the repository system. Intersections of the axes identify unique material-process combinations and analogue studies can be listed at the appropriate intersections. Two generic analogue matrices have been developed, one for the near-field and one for the far-field. Combining analogue studies with field and laboratory investigations provides a powerful means of investigating the natural processes which will occur in the repository environment because the disadvantages of one method are balanced by the advantages of the other. In order to illustrate how analogues can contribute to build technologists confidence, examples for the three different roles of analogues are given. Analogue studies contribute to technologists confidence by increasing the understanding of processes that control the evolution of the repository system over time. Qualitative information from analogues is of

  6. Bone marrow scintigraphy vs bone scintigraphy and radiography in multiple myeloma

    International Nuclear Information System (INIS)

    Feggi, M.; Prandini, N.; Orzincolo, C.; Bagni, B.; Scutellari, P.N.; Spanedda, R.; Gennari, M.; Scapoli, C.L.

    1988-01-01

    The radiography patterns of the skeleton of 73 patients affected by multiple myeloma (MM) were compared to the correspondent scintigraphic findings. Whole body scans were performed using Tc-diphosphonates 99m (bone scintigraphy). And Tc-microcolloides 99m (bone marrow scintigraphy). The results indicate that: a) radiography is more sensitive and accurate than scintigraphy in detecting typical myeloma-related bone lesions; b) bone scintigraphy is useful in detecting alterations in particular locations-i.e. sternum, ribs, scapulae, etc.-which are difficult to demonstrate by plain X-rays; moreover, the recovery of the fractures can be visualized; c) bone marrow scintigraphy is employed to demonstrate the presence of marrow expasion, of cold/hot spots, and relative marrow uptake, related to phagocytic activity. Since in adult men red marrow is confined to the epiphysis of long bones and to the spine, all the diseases affecting bone marrow cause medullary expansion/reduction, which are both easily detected by specific radiopharmaceuticals. The peripheral expasions is clearly documented especially in distal humeri and femora since marrow uptake is included, in healthy adults, in the axial and proximal appendicular skeleton. In spite of its yielding unique informetion, bone marrow scintigraphy remains an additional technique of bone scan, because of its low diagnoditc accuracy

  7. Basic science of nuclear medicine the bare bone essentials

    CERN Document Server

    Lee, Kai H

    2015-01-01

    Through concise, straightforward explanations and supporting graphics that bring abstract concepts to life, the new Basic Science of Nuclear Medicine—the Bare Bone Essentials is an ideal tool for nuclear medicine technologist students and nuclear cardiology fellows looking for an introduction to the fundamentals of the physics and technologies of modern day nuclear medicine.

  8. [Importance of parathyroid SPECT and 99mTc scintigraphy, and of clinical, laboratorial, ultrasonographic and citologic correlation in the pre-operative localization of the parathyroid adenoma - pictorial assay].

    Science.gov (United States)

    Oliveira, Marco Antônio Condé de; Maeda, Sérgio Setsuo; Dreyer, Patrícia; Lobo, Alberto; Andrade, Victor Piana de; Hoff, Ana O; Biscolla, Rosa Paula Mello; Smanio, Paola; Brandão, Cynthia M A; Vieira, José G

    2010-06-01

    In patients with primary hyperparathyroidism, candidates for surgical intervention, the parathyroid pre-operative localization is of fundamental importance in planning the appropriate surgical approach. The additional acquisition of SPECT and Technetium-99m images, during parathyroid scintigraphy with Sestamibi, is not common practice. Usually, only planar image acquisition, 15 minutes prior and 2 hours after radiopharmaceutical administration, is performed. In our experience, the complete protocol in parathyroid scintigraphy increases the accuracy of pre-operative parathyroid localization. The complete utilization of all available nuclear medicine methods (SPECT e 99mTc) and image interpretation in a multidisciplinary context can improve the accuracy of parathyroid scintigraphy.

  9. Radio-colloid liver scintigraphy : patterns of findings and its importance in present perspect

    International Nuclear Information System (INIS)

    Rahman, M.H.; Dey, S.K.; Sobhan, S.

    2004-01-01

    Total 81 patients those have undergone radio-colloid (Technetium-99m Tin-colloid) liver scintigraphy in the Centre for Nuclear Medicine and Ultrasound, Faridpur were retrospectively studied and their respective ultrasound report were correlated. The patients showing normal liver scan acquired top of the list followed by single space occupying lesion (SOL), chronic liver disease (CLD) with or without SOL and multiple SOL in liver. The fact behind relatively more normal scan is that, scan was recommended while doing ultra sonogram to exclude if any focal lesion or early CLD which was not possible by ultrasound imaging. Though demand for radiocolloid liver scan is decreasing due to presence of CT or MRI imaging in advanced world, the combined ultrasound and radio-colloid liver scintigraphy is still very useful to detect focal and diffuse liver diseases in countries like ours. (author) 1 tab., 11 refs

  10. Dynamic cholangio-cysto scintigraphy with sup(99m)Tc HIDA. Technique - Interpretation of results

    International Nuclear Information System (INIS)

    Queant, D.G.C.

    1978-10-01

    Amongst all the methods used to explore the bile function of the liver, isotopic cholangio-cysto scintigraphy should be ideally placed because of its harmlessness and ease of application and the importance of the information supplied. By this technique the bile function may be explored in its various aspects. Functional kinetics: - uptake and excretion by the hepatocytes, - storage and motivity (spontaneous or activated), - spontaneous vesicular rhythm. Morphological: - size and permeability of the bile ducts. The purpose of this study is to define the practical details involved in sup(99mTc)-HIDA cholangio-cysto scintigraphy and to estimate its reliability, advantages and limits. It covers the first 20 patients subjected to this examination in the biophysics service of the Lyon-Sud Faculty of Medicine [fr

  11. MIBI-99mTc mammary scintigraphy

    International Nuclear Information System (INIS)

    Mayosky, Maria C.; Parma, Elvira P.; Armesto, Amparo M.; Zarlenga, Ana C.; Cresta, Carlos; Azar, Maria E.; Noblia, Cristina

    1999-01-01

    121 patients suspected of breast cancer were studied with MIBI- 99m Tc to evaluate the suitability of the mammary scintigraphy in patients with doubtful cancer diagnosis.The results show 93 % sensitivity and 95 % specificity and indicate the usefulness of this procedure to increase the accuracy of the diagnosis

  12. Quantitative evaluation of dysphagia using scintigraphy

    International Nuclear Information System (INIS)

    Park, Seok Gun; Hyun, Jung Keun; Lee, Seong Jae

    1998-01-01

    To evaluate dysphagia objectively and quantitatively, and to clarify the effect of neck position and viscosity changes in patients with aspiration and laryngeal penetration. We studied 35 patients with dysphagia and 21 normal controls using videofluoroscopy and scintigraphy. Videofluoroscopy was performed with barium with three different viscosity, and scintigraphy was done with water, yogurt, and steamed egg mixed with Tc-99m tin colloid. If aspiration was found during videofluoroscopic examination, patient's neck position was changed and study repeated. Videofluoroscopy was analyzed qualitatively. We calculated 7 quantitative parameters from scintigraphy. According to the videofluoroscopic findings, we divided patients into 3 subgroups; aspiration, laryngeal penetration, and no-aspiration group. The result of videofluoroscopy revealed that the most common finding was the delay in triggering pharyngeal swallow. Pharyngeal transit time (PTT) and pharyngeal swallowing efficiency (PSE) in patients with aspiration were significantly different from other groups. After neck position change, aspiration could be reduced in all of 7 patients, and laryngeal penetration reduced by about 82%. PTT and PSE were also improved after position change. Aspiration and laryngeal penetration occurred more frequently in thin liquid swallowing than in thin liquid and solid swallowing. PTT and PSE were useful for the evaluation of dysphagia. Aspiration and laryngeal penetration could by reduced when appropriate position assumed. We could decrease the chance of aspiration by changing the patient diet consistency. Scintigraphy might be useful tool to quantitate and follow up these changes

  13. Quantitative evaluation of dysphagia using scintigraphy

    Energy Technology Data Exchange (ETDEWEB)

    Park, Seok Gun; Hyun, Jung Keun; Lee, Seong Jae [College of Medicine, Dankook Univ., Cheonnon (Korea, Republic of)

    1998-08-01

    To evaluate dysphagia objectively and quantitatively, and to clarify the effect of neck position and viscosity changes in patients with aspiration and laryngeal penetration. We studied 35 patients with dysphagia and 21 normal controls using videofluoroscopy and scintigraphy. Videofluoroscopy was performed with barium with three different viscosity, and scintigraphy was done with water, yogurt, and steamed egg mixed with Tc-99m tin colloid. If aspiration was found during videofluoroscopic examination, patient's neck position was changed and study repeated. Videofluoroscopy was analyzed qualitatively. We calculated 7 quantitative parameters from scintigraphy. According to the videofluoroscopic findings, we divided patients into 3 subgroups; aspiration, laryngeal penetration, and no-aspiration group. The result of videofluoroscopy revealed that the most common finding was the delay in triggering pharyngeal swallow. Pharyngeal transit time (PTT) and pharyngeal swallowing efficiency (PSE) in patients with aspiration were significantly different from other groups. After neck position change, aspiration could be reduced in all of 7 patients, and laryngeal penetration reduced by about 82%. PTT and PSE were also improved after position change. Aspiration and laryngeal penetration occurred more frequently in thin liquid swallowing than in thin liquid and solid swallowing. PTT and PSE were useful for the evaluation of dysphagia. Aspiration and laryngeal penetration could by reduced when appropriate position assumed. We could decrease the chance of aspiration by changing the patient diet consistency. Scintigraphy might be useful tool to quantitate and follow up these changes.

  14. Somatostatin analogue scintigraphy and tuberculosis: case report

    International Nuclear Information System (INIS)

    Biancheri, I.; Rudenko, B.; Vautrin, P.; Raddoul, J.; Lamfichek, N.; Kantelip, B.; Mantion, G.

    2005-01-01

    Scintigraphy using a radiolabelled somatostatin analogue (111 In-pentetreotide) is useful in the detection of neuroendocrine tumors. But this radiopharmaceutical accumulates also in solid tumours or in inflammatory diseases such as granulomatosis. We present a case of 111 In-pentetreotide uptake in a tuberculous adenopathy. (author)

  15. When is 201Tl myocardial scintigraphy indicated?

    International Nuclear Information System (INIS)

    Klepzig, H. Jr.; Kaltenbach, M.

    1987-01-01

    Myocardial scintigraphy with thallium-201 has met with good acceptance in cardiology and has proven its value. The method implies only low risk and yields diagnostic results that allow verification or disqualification of suspected myocardial ischemia in those cases where there is only reduced accuracy of the exercise electrocardiogram. (TRV) [de

  16. Influencing Factors of Radiological Technologist Image of Allied Health College Students

    International Nuclear Information System (INIS)

    Eom, Jong Kwon; Shin, Seong Gyu

    2012-01-01

    Perception level and social position of radiological technologist influence satisfaction level of their job. This study aims to use foundational data to improve perception level and social position of radiological technologists. We conducted interviews and a fill-out survey with 233 students who have been majoring in health-related fields at five universities and colleges located in Busan and who finished internship programs. The study analyzed 233 answer sheets excluding 17 inadequate answer sheets using T-test, ANOVA and multiple regression analysis with SAS9.1. The mean score of perception level was 3.33±0.56. The personal image of radiological technologist showed the best score(3.43±0.56) whereas the social image showed the worst(3.12±0.79). According to the classification of the subject, the answer, 'radiological technologist is specialized job', showed the best score(3.99±0.79). The answer 'radiological technologist suffered from less stress and workload than others when they work usually' showed the worst score(2.88±0.98). According to the classification of each health-related major, the mean score of students who are a major in the department of the radiological technologist was the best(3.46±0.46) and the students who are major in department of the physical therapy was the worst(3.24±0.40). The radiological technologist have to effort to make positive image in the hospital. It is possible to be developed their knowledge and professionalism by cooperating between school and hospital as well as advertising with mass madia.

  17. Influencing Factors of Radiological Technologist Image of Allied Health College Students

    Energy Technology Data Exchange (ETDEWEB)

    Eom, Jong Kwon; Shin, Seong Gyu [Dept. of Radiology, Dong A University Medical Center, Pusan (Korea, Republic of)

    2012-03-15

    Perception level and social position of radiological technologist influence satisfaction level of their job. This study aims to use foundational data to improve perception level and social position of radiological technologists. We conducted interviews and a fill-out survey with 233 students who have been majoring in health-related fields at five universities and colleges located in Busan and who finished internship programs. The study analyzed 233 answer sheets excluding 17 inadequate answer sheets using T-test, ANOVA and multiple regression analysis with SAS9.1. The mean score of perception level was 3.33{+-}0.56. The personal image of radiological technologist showed the best score(3.43{+-}0.56) whereas the social image showed the worst(3.12{+-}0.79). According to the classification of the subject, the answer, 'radiological technologist is specialized job', showed the best score(3.99{+-}0.79). The answer 'radiological technologist suffered from less stress and workload than others when they work usually' showed the worst score(2.88{+-}0.98). According to the classification of each health-related major, the mean score of students who are a major in the department of the radiological technologist was the best(3.46{+-}0.46) and the students who are major in department of the physical therapy was the worst(3.24{+-}0.40). The radiological technologist have to effort to make positive image in the hospital. It is possible to be developed their knowledge and professionalism by cooperating between school and hospital as well as advertising with mass madia.

  18. Bone scintigraphy in post-SARS patients and compared with magnetic resonance imaging

    International Nuclear Information System (INIS)

    Wang Qian; Huang Lili; Qin Shuling

    2004-01-01

    experienced nuclear medicine physicians interpreted the images on visual fashion, and differences in interpretation were decided by consensus. MR imaging were performed using a 1.5-T MR unit. Coronal T1-wighted SE images, T2-weighted images and STIR fat-suppressed T2-weighted images were obtained for both hips and knees. Area with decreased signal intensity on T1-weighted images and increased signal intensity on T2-weighted images or STIR fat-suppressed T2-weighted images were considered as the lesion of AVN. Two experienced musculoskeletal radiologists respectively interpreted the MR images, and differences in interpretation were decided by consensus. Results: In the 66 post-SARS patients, abnormal scintigraphy were found in 31 (47.0%), and it accounted for 27/46 (58.7%) of the women and 4/20 (20.0%) of the men (z=3.65, p 0.10). Conclusions: Abnormal bone scintigraphy was found significantly higher in the post-SARS patients, it indicated the high risk of AVN in these patients. Knees and hips were the most frequent involved joints. Steroids use was considered as a risk factor of AVN, whereas, final diagnosis of AVN in these patients will need further follow-up study. Scintigraphy is competitive technique compared with MR imaging for early detection of AVN, and is more useful for those patients with multiple joint pains. (authors)

  19. Somatostatin receptor scintigraphy on thyroid carcinoma

    International Nuclear Information System (INIS)

    Pan Weimin; Tan Tianzhi

    2004-01-01

    Purpose: To study the diagnostic value and clinical method of somatostatin receptor scintigraphy on thyroid carcinoma using 99 Tc m -RC-160 labeled with direct method as scintigraphy reagent; Methods: Somatostatin receptor scintigraphy (SRS) were performed on 25 patients with thyroid carcinoma, using 99 Tc m -RC-160 labeled with direct method as scintigraphy reagent, controlling with 131 I- whole- body- imaging(1312 -WBI). Results: Of 4 patients with MTC (medullary thyroid carcinoma), positive metastasis and primary tumour were detected on 3 patients by SRS, negative results were obtained by 131 I-WBI, the positive detective rate by SRS is 3/4; of 12 patients with PTC (papillary thyroid carcinoma), positive metastasis and primary tumour were detected on 2 patients by SRS or 131 I-WBI,1 of which only by SRS, while negative results were obtained by 131 I- WBI, the positive detective rate by SRS is 3/12; of 8 patients with FTC(follicular thyroid carcinoma), positive metastasis and primary tumour were detected on 1 patients by SRS or 131 I-WBI, and 2 positive results were obtained only by SRS, while negative by 131 I-WBI, the positive detective rate by SRS is 3/8; of 1 patients with HCC (hurthle cell carcinoma ), positive metastasis and primary tumour were detected by SRS, while negative by 131 I-WBI; Conclusions: SRS using 99 Tc m -RC-160 labeled with direct method as scintigraphy reagent has high diagnostic value on thyroid carcinoma, especially on MTC and HCC. (authors)

  20. Awareness-of-the-issues investigation about radiological technologist's operating discretionary authority etc

    International Nuclear Information System (INIS)

    Fukada, Teruaki

    2008-01-01

    The discretionary range of a radiological technologist and the autonomy on law were investigated by the questionnaire. The degree of satisfaction of work and the domain to lengthen were investigated. Result, the inspection direction change of MRI inspection and the urgent connection at the time of diagnostic imaging unusual discovery is discretion. However, there are no part change and addition of a general photography inspection at discretion. Explanation of the inspection result of a patient is also useless. Moreover, many of troubles are explanation relations, It was much between the doctor or the patient. For the degree of operating satisfactory, definite aim in life is 70 points. There were about 70 points about speciality nature. The degree of discretion has many less than 50 points. On the whole, a female radiological technologist's degree of satisfaction was low. Next, the autonomy of a radiological technologist method was low and many wished a legal revision. Specialization is promoted as a future measure. Diagnostic imaging field advance is lengthened. Improvement in a status of a radiological technologist, Activity fullness of the Japan Association of Radiological Technologists is expected. (author)

  1. Statistics Refresher for Molecular Imaging Technologists, Part 2: Accuracy of Interpretation, Significance, and Variance.

    Science.gov (United States)

    Farrell, Mary Beth

    2018-06-01

    This article is the second part of a continuing education series reviewing basic statistics that nuclear medicine and molecular imaging technologists should understand. In this article, the statistics for evaluating interpretation accuracy, significance, and variance are discussed. Throughout the article, actual statistics are pulled from the published literature. We begin by explaining 2 methods for quantifying interpretive accuracy: interreader and intrareader reliability. Agreement among readers can be expressed simply as a percentage. However, the Cohen κ-statistic is a more robust measure of agreement that accounts for chance. The higher the κ-statistic is, the higher is the agreement between readers. When 3 or more readers are being compared, the Fleiss κ-statistic is used. Significance testing determines whether the difference between 2 conditions or interventions is meaningful. Statistical significance is usually expressed using a number called a probability ( P ) value. Calculation of P value is beyond the scope of this review. However, knowing how to interpret P values is important for understanding the scientific literature. Generally, a P value of less than 0.05 is considered significant and indicates that the results of the experiment are due to more than just chance. Variance, standard deviation (SD), confidence interval, and standard error (SE) explain the dispersion of data around a mean of a sample drawn from a population. SD is commonly reported in the literature. A small SD indicates that there is not much variation in the sample data. Many biologic measurements fall into what is referred to as a normal distribution taking the shape of a bell curve. In a normal distribution, 68% of the data will fall within 1 SD, 95% will fall within 2 SDs, and 99.7% will fall within 3 SDs. Confidence interval defines the range of possible values within which the population parameter is likely to lie and gives an idea of the precision of the statistic being

  2. Nuclear medicine resources manual

    International Nuclear Information System (INIS)

    2006-02-01

    Over the past decade many IAEA programmes have significantly enhanced the capabilities of numerous Member States in the field of nuclear medicine. Functional imaging using nuclear medicine procedures has become an indispensable tool for the diagnosis, treatment planning and management of patients. However, due to the heterogeneous growth and development of nuclear medicine in the IAEA's Member States, the operating standards of practice vary considerably from country to country and region to region. This publication is the result of the work of over 30 international professionals who have assisted the IAEA in the process of standardization and harmonization. This manual sets out the prerequisites for the establishment of a nuclear medicine service, including basic infrastructure, suitable premises, reliable supply of electricity, maintenance of a steady temperature, dust exclusion for gamma cameras and radiopharmacy dispensaries. It offers clear guidance on human resources and training needs for medical doctors, technologists, radiopharmaceutical scientists, physicists and specialist nurses in the practice of nuclear medicine. The manual describes the requirements for safe preparation and quality control of radiopharmaceuticals. In addition, it contains essential requirements for maintenance of facilities and instruments, for radiation hygiene and for optimization of nuclear medicine operational performance with the use of working clinical protocols. The result is a comprehensive guide at an international level that contains practical suggestions based on the experience of professionals around the globe. This publication will be of interest to nuclear medicine physicians, radiologists, medical educationalists, diagnostic centre managers, medical physicists, medical technologists, radiopharmacists, specialist nurses, clinical scientists and those engaged in quality assurance and control systems in public health in both developed and developing countries

  3. Variability in the interpretation of DMSA scintigraphy after urine infection

    International Nuclear Information System (INIS)

    Craig, J.; Howman-Giles, R.; Uren, R.; Irwig, L.; Bernard, E.; Knight, J.; Sureshkumar, P.; Roy, L.P.

    1997-01-01

    Full text: This study investigated the extent of and potential reasons for interpretation disagreement of 99m Tc-DMSA scans after urine infection in children. Methods: 441 scans were selected from children with first urine infection (UTI) from 1993-1995. 294 scans were performed at a median time of seven days after UTI and 147 in children free from infection over one year follow-up. Two nuclear medicine physicians independently reported according to whether renal abnormality was present or absent and used the four level grading system described by Goldraich: grade 1-no more than two cortical defects; grade 2 -more than 2 defects; grade 3-diffuse reduction in uptake with or without defects; grade 4 -shrunken kidney <10% function. Indices for variability used were the percentage of agreement and kappa statistic, expressed as a percentage. For the grading scale used, both measures were weighted with integers representing the number of categories from perfect agreement. Disagreement was analysed for children, kidneys and kidney zones. Results: There was agreement in 86 per cent (kappa 69%) for the normal-abnormal DMSA scan dichotomy, the weighted agreement was 94 per cent (kappa 82%) for the grading scale. Disagreement of DMSA scan interpretation ≥ two grades was present in three cases (0.7%). The same level of agreement was present for the patient, kidney and kidney zones comparisons. Agreement was not influenced by age or the timing of scintigraphy after urine infection. Conclusion: Two experienced physicians showed good agreement in the interpretation DMSA scintigraphy in children after urine infection and using the grading system of Goldraich

  4. 99TCM-dextran scintigraphy in protein losing enteropathy (PLE)

    International Nuclear Information System (INIS)

    Gibson, M.; Larden, D.W.; Angelides, S.; Roman, M.R.

    2003-01-01

    Full text: Protein losing enteropathy (PLE) is an uncommon complication following right heart bypass operations (Fontan procedure-FP) caused by chronically raised systemic venous pressure with perhaps concomitant immunological or inflammatory factors. Medical, transcatheter, and surgical therapies aimed at reducing systemic venous pressure are often unsuccessful. Conversely, where intestinal protein loss is circumscribed to a relatively small region, surgical resection has been reported as beneficial. However, confirmation of localised disease is difficult. Nuclear scintigraphy can potentially determine extent of disease. A 14-year-old girl with a background history of tricuspid atresia, right ventricular hypoplasia and ventricular- and atrial-septal defects developed PLE post-FP, resulting in cardiac failure, chronic pleural effusions and worsening ascites. Her condition gradually deteriorated and became refractory to therapy. A 99Tcm-Dextran study was performed for further evaluation. 99Tcm-Dextran 77 000 (260 MBq) was produced aseptically from a previously prepared sterile 'cold kit'. Radiochemical purity was found to be > 95%. Anterior and posterior planar scans of the lower chest, abdomen and pelvis were acquired continuously over the initial 2 h post-intravenous injection of radiotracer using a dual-head gamma-camera. There was focal abnormal accumulation of tracer in the left flank demonstrated, consistent with localised disease, which was confirmed on subsequent small bowel biopsies. The patient is awaiting a limited small bowel resection. Thus, 99Tcm-Dextran scintigraphy was useful in determining extent of disease and further management. Copyright (2003) The Australian and New Zealand Society of Nuclear Medicine Inc

  5. Unsuspected pregnancy during bone scintigraphy

    International Nuclear Information System (INIS)

    Oates, E.; Ramberg, K.; Becker, J.L.

    1990-01-01

    Despite careful screening efforts to avoid it, nuclear medicine studies are unintentionally performed on pregnant patients. Three-phase bone scanning is a common procedure performed in women of child-bearing age. Unsuspected pregnancies have been discovered on the flow and early view of the pelvis. The authors present a case of a pregnant girl, aged 15, who had a bone scan. They explain how this occurred and how they plan to prevent a recurrence. Dosimetry for the fetus also is considered

  6. Development of a tool to aid the radiologic technologist using augmented reality and computer vision

    International Nuclear Information System (INIS)

    MacDougall, Robert D.; Scherrer, Benoit; Don, Steven

    2018-01-01

    This technical innovation describes the development of a novel device to aid technologists in reducing exposure variation and repeat imaging in computed and digital radiography. The device consists of a color video and depth camera in combination with proprietary software and user interface. A monitor in the x-ray control room displays the position of the patient in real time with respect to automatic exposure control chambers and image receptor area. The thickness of the body part of interest is automatically displayed along with a motion indicator for the examined body part. The aim is to provide an automatic measurement of patient thickness to set the x-ray technique and to assist the technologist in detecting errors in positioning and motion before the patient is exposed. The device has the potential to reduce the incidence of repeat imaging by addressing problems technologists encounter daily during the acquisition of radiographs. (orig.)

  7. [Undergraduate education of medical technologists to promote scientific and technological literacy].

    Science.gov (United States)

    Yamaguchi, Hiroyuki; Akizawa, Hirotsugu

    2010-07-01

    It is becoming increasingly important for today's medical technologists to receive proper training on the safety of medical treatment and healthcare in order to accommodate the rapid changes and advancement in medical technology. In particular, because of the increase of hospital-acquired infections, the role of medical technologists involved in infection control has become much more important. In addition, particularly in Japan, the career options available to students graduating with a degree in medical technology have become much more diverse, ranging from research laboratories to clinical services; however, undergraduate education for medical technologists is limited. It is therefore deemed necessary for undergraduate students to be provided with adequate training from their universities by offering a wider selection of classes in this subject area. In this paper, we summarize our preliminary findings on the trial lessons that are offered to medical technology students in their microbiology class. These lessons are designed to enhance students' academic potential and to engage their interest.

  8. Development of a tool to aid the radiologic technologist using augmented reality and computer vision

    Energy Technology Data Exchange (ETDEWEB)

    MacDougall, Robert D.; Scherrer, Benoit [Boston Children' s Hospital, Department of Radiology, Boston, MA (United States); Don, Steven [Washington University School of Medicine, Mallinckrodt Institute of Radiology, St. Louis, MO (United States)

    2018-01-15

    This technical innovation describes the development of a novel device to aid technologists in reducing exposure variation and repeat imaging in computed and digital radiography. The device consists of a color video and depth camera in combination with proprietary software and user interface. A monitor in the x-ray control room displays the position of the patient in real time with respect to automatic exposure control chambers and image receptor area. The thickness of the body part of interest is automatically displayed along with a motion indicator for the examined body part. The aim is to provide an automatic measurement of patient thickness to set the x-ray technique and to assist the technologist in detecting errors in positioning and motion before the patient is exposed. The device has the potential to reduce the incidence of repeat imaging by addressing problems technologists encounter daily during the acquisition of radiographs. (orig.)

  9. Lifetime attributable risk for cancer from occupational radiation exposure among radiologic technologists

    Energy Technology Data Exchange (ETDEWEB)

    Moon, Eun Kyeong; Lee, Won Jin [Dept. of Preventive Medicine, Korea University College of Medicine, Seoul (Korea, Republic of)

    2016-12-15

    Medical radiation workers were among the earliest occupational groups exposed to external ionizing radiation due to their administration of a range of medical diagnostic procedures. Ionizing radiation is a confirmed human carcinogen for most organ sites. This study, therefore, was aimed to estimate lifetime cancer risk from occupational exposure among radiologic technologists that has been recruited in 2012-2013. Our findings showed a small increased cancer risk in radiologic technologists from their occupational radiation exposure in Korea. However, continuous dose monitoring and strict regulation on occupational safety at the government level should be emphasized to prevent any additional health hazards from occupational radiation exposure. Our findings showed a small increased cancer risk in radiologic technologists from their occupational radiation exposure in Korea. However, continuous dose monitoring and strict regulation on occupational safety at the government level should be emphasized to prevent any additional health hazards from occupational radiation exposure.

  10. Lifetime attributable risk for cancer from occupational radiation exposure among radiologic technologists

    International Nuclear Information System (INIS)

    Moon, Eun Kyeong; Lee, Won Jin

    2016-01-01

    Medical radiation workers were among the earliest occupational groups exposed to external ionizing radiation due to their administration of a range of medical diagnostic procedures. Ionizing radiation is a confirmed human carcinogen for most organ sites. This study, therefore, was aimed to estimate lifetime cancer risk from occupational exposure among radiologic technologists that has been recruited in 2012-2013. Our findings showed a small increased cancer risk in radiologic technologists from their occupational radiation exposure in Korea. However, continuous dose monitoring and strict regulation on occupational safety at the government level should be emphasized to prevent any additional health hazards from occupational radiation exposure. Our findings showed a small increased cancer risk in radiologic technologists from their occupational radiation exposure in Korea. However, continuous dose monitoring and strict regulation on occupational safety at the government level should be emphasized to prevent any additional health hazards from occupational radiation exposure.

  11. Nuclear medicine in bone diagnostics

    International Nuclear Information System (INIS)

    Feine, U.; Mueller-Schauenburg, W.

    1985-01-01

    This book on nuclear medicine in bone diagnostics and other complementary imaging methods is composed out of the 51 presentations of the 2nd Tuebinger bone symposium held on the 11th and 12th January 1985; it gives an overview of newer methods of nuclear medicine and other imaging methods such as magnetic-resonance tomography and sonography. While the 1st Tuebinger Symposium in January 1981 dealt with the clinical application of classical bone scintigraphy and the possibilities of the results of differential diagnosis, the present book is concerned with indications, alternative radiopharmaceuticals for skeleton scintigraphy and other techniques. The intention is to give a survey of the developments made over the last few years. (orig./MG) [de

  12. Skeletal scintigraphy and SPECT/CT in orthopedic imaging

    International Nuclear Information System (INIS)

    Klaeser, B.; Walter, M.; Krause, T.

    2011-01-01

    Multi-modality imaging with SPECT-CT in orthopaedics combines the excellent sensitivity of scintigraphy with the morphological information of CT as a key for specific interpretation of findings in bone scans. The result is an imaging modality with the clear potential to prove of value even in a competitive setting dominated by MRI, and to significantly add to diagnostic imaging in orthopaedics. SPECT-CT is of great value in the diagnostic evaluation after fractures, and - in contrast to MRI - it is well suited for imaging in patients with osteosyntheses and metallic implants. In sports medicine, SPECT-CT allows for a sensitive and specific detection of osseous stress reactions before morphological changes become detectable by CT or MRI. In patients with osseous pain syndromes, actively evolving degenerative changes as a cause of pain can be identified and accurately localized. Further, particularly prospective diagnostic studies providing comparative data are needed to strengthen the position of nuclear imaging in orthopaedics and sports medicine and to help implementing SPECT/CT in diagnostic algorithms. (orig.)

  13. International Society of Radiographers and Radiological Technologists and radiation protection

    International Nuclear Information System (INIS)

    Yule, A.

    2001-01-01

    The ISRRT was formed in 1962 with 15 national societies and by the year 2000 has grown to comprise more than 70 member societies. The main objects of the organization are to: Improve the education of radiographers; Support the development of medical radiation technology worldwide; Promote a better understanding and implementation of radiation protection standards. The ISRRT has been a non-governmental organization in official relations with the World Health Organization (WHO) since 1967. It is the only international radiographic organization that represents radiation medicine technology and has more than 200 000 members within its 70 member countries. Representatives of the ISRRT have addressed a number of assemblies of WHO regional committees on matters relating to radiation protection and radiation medicine technology. In this way, the expertise of radiographers worldwide contributes to the establishment of international standards in vital areas, such as: Quality control; Legislation for radiation protection; Good practice in radiographic procedures; Basic radiological services. The ISRRT believes that good and consistent standards of practice throughout the world are essential

  14. Reconsideration of the indication of Ga-67 scintigraphy

    Energy Technology Data Exchange (ETDEWEB)

    Takanashi, Toshiyasu; Komatani, Akio; Yamaguchi, Koichi (Yamagata Univ. (Japan))

    1984-11-01

    In order to establish proper indication of Ga-67 scintigraphy, its actual utilization in our hospital was reviewed. Although a large number of Ga-67 scintigraphy over 500 cases a year had been done, the clinical efficacy was found in limited conditions such as small cell carcinoma of the lung, malignant lymphoma, anaplastic carcinoma of the thyroid and abscess. In the other conditions, Ga-67 scintigraphy had little significance clinically and was not effective for seeking metastasis. Based on such situations, we emphasized that the indication of Ga-67 scintigraphy should be more limited under the better understanding of its characteristics.

  15. Methodological problems of sacroiliac joint scintigraphy

    International Nuclear Information System (INIS)

    Schoerner, W.; Haubold, U.

    1981-01-01

    Bone scintigraphy of the sacroiliac joints and the lumbar spine was performed in 35 patients with ankylosing spondylitis and 30 control subjects. The scans were evaluated by qualitative and quantitative assessment. The sacroiliac/sacrum ratio (index ISG/sacrum), the sacroiliac/lumbar spine ratio (index ISG/LWS), and the left sacroiliac joint/right sacroiliac joint ratio (index li. ISG/re. ISG) were calculated. The visual interpretation of colour scans proved to be unreliable. The index ISG/sacrum was more sensitive than the index ISG/LWS. The index li. ISG/re. ISG was helpful as an additional criterion. When digital sacroiliac joint scintigraphy is well standardized it can be considered as a useful technique in early diagnosis of ankylosing spondylitis. (orig.) [de

  16. Assessment of mandibular growth by skeletal scintigraphy

    International Nuclear Information System (INIS)

    Kaban, L.B.; Cisneros, G.J.; Heyman, S.; Treves, S.

    1982-01-01

    Accurate assessment of facial skeletal growth remains a major problem in craniomaxillofacial surgery. Current methods include: (1) comparisons of chronologic age with growth histories of the patient and the family, (2) hand-wrist radiographs compared with a standard, and (3) serial cephalometric radiographs. Uptake of technetium-99m methylene diphosphonate into bone is a reflection of current metabolic activity and blood flow. Therefore, scintigraphy with this radiopharmaceutical might serve as a good method of assessing skeletal growth. Thirty-four patients, ranging in age from 15 months to 22 years, who were undergoing skeletal scintigrams for acute pathologic conditions of the extremities, were used to develop standards of uptake based on age and skeletal maturation. The results indicate that skeletal scintigraphy may be useful in evaluation of mandibular growth

  17. Value of bone scintigraphy in psoriasis

    International Nuclear Information System (INIS)

    Nakayama, Chikashi; Nakata, Hajime; Kimoto, Tatsuya; Nakayama, Takashi; Yokomizo, Yu

    1982-01-01

    We performed bone scintigraphy on 16 cases of psoriasis to evaluate its possible value in this disease and obtained the following results: 1) Bone scintigraph was abnormal in 15 of 16 cases and the frequent association of arthritis in psoriasis was confirmed. 2) Abnormal uptake on bone scintigraph was noted in various joints including peripheral joints of extremities, sternoclavicular joint, shoulder and rib. Abnormality of sacroiliac joint or ankle was less frequent than previously reported. 3) Findings of bone scintigraph were not necessarily related with clinical symptoms or laboratory data. Abnormal uptake was also noted in many joints whose X-ray examinations were negative. Bone scintigraphy thus seems to be useful in early detection of arthritis and to become an initial therapeutic indicator of arthritis in psoriasis. (author)

  18. Parathyroid scintigraphy in chronic renal failure

    International Nuclear Information System (INIS)

    Baulieu, J.L.; Houlier, S.; Baulieu, F.; Rousseau, C.

    1995-01-01

    The performances of the scintigraphic localization of parathyroid adenoma have improved with the use of technetium-99m radiolabeled tracers and the development of thyroid subtraction methods. By using methoxy--isobutyl-isonitrile (MIB) alone in two phases, sensitivity and specificity are respectively O.85 and 0.92. The interest of scintigraphy compared with ultrasonography is specially marked in the situations encountered in patients with renal failure: hyperplasia, multiple or ectopic adenoma, association with thyroid nodules. However, the localisation of adenoma remains more difficult in renal failure than in primary hyperthyroidism. Scintigraphy seems to be essential for localizing adenoma and eventually hyperplasia, before surgery in patients in bad conditions or before a second operation. (authors). 26 refs., 3 figs., 2 tabs

  19. Perfusion lung scintigraphy in primary pulmonary hypertension

    International Nuclear Information System (INIS)

    Ogawa, Y.; Hayashida, K.; Uehara, T.; Shimonagata, T.; Nishimura, T.; Osaka Univ., Suita

    1993-01-01

    15 cases of primary pulmonary hypertension were classified into two groups by patterns of perfusion lung scintigraphy. Perfusion scintigrams showed multiple, small, ill-defined defects (mottled + ve) pattern in eight cases, and the remaining seven cases had a normal (mottled - ve) pattern. The mean pulmonary arterial pressure in patients with a mottled pattern (54 ± 10 mmHg) was higher than in those with a normal pattern (42 ± 9 mmHg, p < 0.05). There were no significant differences between the two groups in right ventricular ejection fraction, partial pressures of oxygen in the arterial blood or alveolo-arterial oxygen difference. All the patients with a mottled pattern died within 2 years following the lung scintigraphy. There was a significant difference in the survival curves between the two groups. (author)

  20. Scintigraphy in primary hypogonadism in testicle transplantation

    International Nuclear Information System (INIS)

    Glejzer, Yu.Ya.; Marinbakh, A.E.; Vasil'ev, V.I.

    1979-01-01

    A new method of diagnosis, scintigraphy of the testicles with sup(99m)Tc-pertechnetat is presented. The technique of the study is described, the data are processed. 26 patients with primary hypogonadism (cryptorchism, hypo- and aplasia of the testicles) and adrogenic insufficiency were examined before and after allotransplantation of cadaver testicle on arterial-venous pedicle. The advantages of the method lie in its being highly informative and objective and its low toxicity for a patient. Radionuclide examination makes it possible to determine the disposition, size and type of blood supply as well as the functional ability of testicles of patients with primary hypogonadism. Testicle scintigraphy can be significant while estimating the level of vascular network development and the function of a transplanted testicle, as well as in dynamic observations of a graft

  1. Esophageal transit scintigraphy in systemic sclerosis

    Directory of Open Access Journals (Sweden)

    Marek Chojnowski

    2016-11-01

    Full Text Available Systemic sclerosis is a rare connective tissue disease, distinctive features of which are fibrosis and microangiopathy. The esophagus is one of the most commonly involved internal organs. Most patients experience dysphagia, difficulties in swallowing and gastro-esophageal reflux. However, in up to one third of cases, the initial onset of esophageal disease may be clinically silent. There are several diagnostic modalities available for assessing both morphological and functional abnormalities of the esophagus. If structural abnormalities are suspected, endoscopy is the method of choice. Functional evaluation is best achieved with manometry. Both endoscopy and manometry are invasive techniques, with low patient acceptance. Barium-contrast study is well tolerated, but qualitative assessment of functional abnormalities is imprecise. Esophageal scintigraphy is an easy, non-invasive, sensitive and specific diagnostic modality. It can detect esophageal dysfunction even in asymptomatic patients. In patients already diagnosed with systemic sclerosis, scintigraphy is useful in evaluating severity and progression of the disease.

  2. Bone scintigraphy in lesions of the skull

    International Nuclear Information System (INIS)

    Fischer, M.; Wasilewski, A.; Deitmer, T.

    1982-01-01

    The value of 3-phase-scintigraphy in bone lesions of the skull with a new seeking agent 99mTc-2,3-dicarboxypropane-1,1-diphosphonic acid (DPD) is studied. A high soft tissue-bone-ratio of DPD is emphasized. For this reason DPD is used for bone scintigraphy of the skull, because the mass of soft tissue in relation to bone is high and a higher clearance improves the interpretation of the images of the first two phases. An increased tracer uptake is found for skeletal neoplasms (malignant and benign lesions) and for acute osteomyelitis. By contrast, the chronic inflammatory bone lesions showed normal tracer uptake. This new bone seeking agent allows to localize and differentiate tumorous or acute inflammatory lesions and chronic inflammatory bone lesions of the skull

  3. Thallium 201 scintigraphy of the myocardium. A bibliographical survey for image optimisation

    International Nuclear Information System (INIS)

    Chatelier, Luc.

    1979-01-01

    At the request of a Nuclear Medicine Service we compiled a review of the literature on thallium 201 myocardium scintigraphy in order to define the optimum parameters for image acquisition; included also are the bibliograhical references of studies on the sensitivities, specificities and accuracies of this technique as compared with electrocardiography in the diagnosis and evaluation of ischemic heart diseases. This examination seems to have a part to play at all stages in the evaluation of ischemic heart diseases, whether for the detection (ischemia) emergency handling (thrombosis) or post-surgical checking (permeability of an aorto-coronary transplant) of these diseases, the great frequency and gravity of which have no longer to be proved. This study covers the whole period since thallium scintigraphy began (1970) until June 1978. Thallium seems to have a great future in cardiology and may be even in other fields since its use is quoted (in only a few publications as yet) for brain, kidney and pancreas scintigraphy [fr

  4. Use of 99mTc-Mononuclear Leukocyte Scintigraphy in Nosocomial Fever

    International Nuclear Information System (INIS)

    Gutfilen, B.; Lopes de Souza, S.A.; Martins, F.P.P.; Cardoso, L.R.; Pinheiro Pessoa, M.C.; Fonseca, L.M.B.

    2006-01-01

    Purpose: To determine the overall diagnostic accuracy of mononuclear leukocyte- 99m Tc scintigraphy in the routine detection of infectious lesions and fever of unknown origin (FUO) in inpatients. Material and Methods: The use of mononuclear leukocyte 99m Tc scintigraphy is presented in 87 patients who fulfilled the Durack and Street diagnostic criteria of nosocomial FUO; 66 patients were suspected of having infectious lesions (myocarditis, endocarditis, infected catheters, diabetic foot, and osteomyelitis) and 21 patients presented with unknown causes of FUO. Scans were carried out 1, 3, and 24 h after injection of labeled leukocytes. Results: In three cases (3/27) where scintigraphs were negative, biopsies were positive. There were two (2/87) false-positive scintigrams. We found a 95.8% sensitivity and 92.3% specificity. PPV was 93.8%, PPN 94.7%, and accuracy 94.2%. Conclusion: Mononuclear leukocyte 99m Tc scintigraphy showed high sensitivity, specificity, positive and negative predictive values in patients with nosocomial FUO. These results suggest an important role for nuclear medicine in the management of patients with infection/inflammation

  5. Use of {sup 99m}Tc-Mononuclear Leukocyte Scintigraphy in Nosocomial Fever

    Energy Technology Data Exchange (ETDEWEB)

    Gutfilen, B.; Lopes de Souza, S.A.; Martins, F.P.P.; Cardoso, L.R.; Pinheiro Pessoa, M.C.; Fonseca, L.M.B. [Univ. Federal do Rio de Janeiro (Brazil). Dept. de Radiologia

    2006-09-15

    Purpose: To determine the overall diagnostic accuracy of mononuclear leukocyte-{sup 99m}Tc scintigraphy in the routine detection of infectious lesions and fever of unknown origin (FUO) in inpatients. Material and Methods: The use of mononuclear leukocyte {sup 99m}Tc scintigraphy is presented in 87 patients who fulfilled the Durack and Street diagnostic criteria of nosocomial FUO; 66 patients were suspected of having infectious lesions (myocarditis, endocarditis, infected catheters, diabetic foot, and osteomyelitis) and 21 patients presented with unknown causes of FUO. Scans were carried out 1, 3, and 24 h after injection of labeled leukocytes. Results: In three cases (3/27) where scintigraphs were negative, biopsies were positive. There were two (2/87) false-positive scintigrams. We found a 95.8% sensitivity and 92.3% specificity. PPV was 93.8%, PPN 94.7%, and accuracy 94.2%. Conclusion: Mononuclear leukocyte {sup 99m}Tc scintigraphy showed high sensitivity, specificity, positive and negative predictive values in patients with nosocomial FUO. These results suggest an important role for nuclear medicine in the management of patients with infection/inflammation.

  6. Radiological protection in industrial gamma scintigraphy facilities

    International Nuclear Information System (INIS)

    Rodriguez, M.; Suarez, S.

    2002-01-01

    Operational experience has shown that the mobile scintigraphy sector is not only that where individual doses are highest but also where there are the greatest number of high doses, overdoses and incidents. This fact highlights the need for improvement in the optimisation of radiological protection in the sector. In this context the CSN has adopted and implemented an action plan aimed at reducing doses to operation staff. (Author)

  7. Value of thyroid scintigraphy using thallium 201

    International Nuclear Information System (INIS)

    Hermans, J.; Parmentier, S.; Beauduin, M.; Schmitz, A.; Therasse, G.

    1986-01-01

    The value of thallium-201 scintigraphy in the differential diagnosis of cold thyroid nodules demonstrated on the thyroid scan with technetium-99m was emphasized. From the clinical results it can be deduced that if a cold nodule is positive with thallium-201 the lesion has a high percentage of being a high risk of malignancy. This information might be quite valuable in selecting patients for operation [fr

  8. Role of scintigraphy in urinary tract infection

    International Nuclear Information System (INIS)

    Conway, J.J.

    1988-01-01

    There is controversy regarding the role of radiological imaging for urinary tract infection (UTI). The gold standard has been the intravenous pyelogram (IVP). Yet, the IVP has a very limited value with only about 25% of children with pyelonephritis demonstrating abnormalities. Ultrasound (US) has recently been advocated as a replacement for the poorly sensitive and poorly specific IVP. However, comparative studies between US and IVP indicate only an equivalent sensitivity and specificity. Cortical scintigraphy with Technetium-99m glucoheptonate (99mTc GH) or 99mTc dimercaptosuccinic acid (99mTc DMSA) has also been advocated as a means of differentiating parenchymal (pyelonephritis) from nonparenchymal (lower UTI) involvement in UTI. The clinical presentation may be misleading especially in the infant and child in whom an elevated temperature, flank pain, shaking chills, or an elevated sedimentation rate are often lacking. The clinician attempts to localize the site of infection for it has a direct bearing upon the therapy. A collecting system infection can often be eradicated with a single oral dose of an appropriate antibiotic, whereas renal parenchymal involvement requires IV therapy for an extended interval. Cortical scintigraphy can localize the site of infection with a high degree of accuracy. Recent studies report a sensitivity of 86% and specificity of 81% of pyelonephritis. This is in contrast to the IVP with a sensitivity of only 24% and US with a sensitivity of only 42%. The scintigraphic appearance of parenchymal infection of the kidney is a spectrum of minimal to gross defects reflecting the degree of histologic involvement that spans from a mild infection to frank abscess. Cortical scintigraphy can be used to monitor the evolution of scarring following infection. Cortical scintigraphy with 99mTc DMSA or 99mTc GH is the method of choice for the initial evaluation of UTI. 37 references

  9. Gallium-67 scintigraphy and the Heart

    International Nuclear Information System (INIS)

    Garayt, D.

    1987-01-01

    Although gallium-67 was initially used for tumor imaging, clinical studies suggested its potential use as a method of detecting occult inflammatory lesions. The demonstration of diffuse myocardial uptake of gallium-67 during Lyme disease myocarditis is consistent with a pattern of diffuse myocarditis as seen in sarcoid myocarditis. Two cases are presented. A critical review of the various applications of gallium-67 scintigraphy to myocardium investigation is carried out [fr

  10. Scintigraphy of the functioning thyroid nodule

    International Nuclear Information System (INIS)

    Mahlstedt, J.

    2008-01-01

    The evaluation of functioning thyroid nodules is achieved by use of several Iodine isotopes, while in clinical routine 99m Tc-Pertechnetate is dominating. For classification the terms hyperfunctional, isofunctional (normal) and hypofunctional are useful in comparison to the surrounding normally functioning thyroid tissue, which can be stimulated or suppressed. Therefore, autonomous functioning thyroid nodules can vary the scintigraphic appearance. For precise description the terms 'compensation' and 'decompensation' have to be used in relation to scintigraphy or thyroidal metabolism (regulation). (orig.)

  11. Scintigraphy of parathyroids in secondary hyperparathyroidism

    International Nuclear Information System (INIS)

    Hublo, D.; Beauchat, V.; Pattou, F.; Lecomte-Houcke, M.; Prangere, T.; Ziegels, P.; Carnaille, B.; Proye, C.; Marchandise, X.; Steiling, M.

    1997-01-01

    Use of pre-surgery imaging of parathyroids is still questioned. The goal of this study is to evaluate the sensitivity of the scintigraphy in the detection of secondary parathyroid anomalies with renal insufficiency. Thirty two patients (20 F, 12 M) of 14 - 74 years old were operated of secondary hyperparathyroidism with renal insufficiency. It was a matter of re-intervention in 9 cases. The acquisitions were achieved 20 min and 2 h after injection of 550 MBq of MIBI- 99m Tc or of Tetrofosmine - 99m Tc and 2 h after injection of 5.5 MBq of iodine 123. Eighty seven glands of 28 to 3820 mg were pulled out in 23 first surgeries while the parathyroid tissue was found in thymic prolongations in 5 of these patients. The masses of 41 glands, positive by scintigraphy (from 69 to 3829 mg), were significantly higher (Wilcoxon's test, p -8 ) than the 46 not-seen (from 28 to 1050 mg). The sensitivity of total detection is 47%, of 85% for the 33 glands of 500 mg or more and of 24% for the 54 glands of less than 500 mg. In 9 re-interventions, 12 abnormal glands were pulled out: 11 (of 430 to 4500 mg were positive by scintigraphy, while only one gland of 80 mg was not seen. In conclusion, the scintigraphy realised before first surgery for secondary hyperparathyroidism with renal insufficiency presents low sensitivity, related partly, at least, to the low mass of glands and justifies itself only by search for positive ectopic parathyroids. Instead, it appears performing and indispensable in case of re-intervention

  12. Aerosol lung inhalation scintigraphy in normal subjects

    Energy Technology Data Exchange (ETDEWEB)

    Sui, Osamu; Shimazu, Hideki

    1985-03-01

    We previously reported basic and clinical evaluation of aerosol lung inhalation scintigraphy with /sup 99m/Tc-millimicrosphere albumin (milli MISA) and concluded aerosol inhalation scintigraphy with /sup 99m/Tc-milli MISA was useful for routine examination. But central airway deposit of aerosol particles was found in not only the patients with chronic obstructive pulmonary disease (COPD) but also normal subjects. So we performed aerosol inhalation scintigraphy in normal subjects and evaluated their scintigrams. The subjects had normal values of FEVsub(1.0)% (more than 70%) in lung function tests, no abnormal findings in chest X-ray films and no symptoms and signs. The findings of aerosol inhalation scintigrams in them were classified into 3 patterns; type I: homogeneous distribution without central airway deposit, type II: homogeneous distribution with central airway deposit, type III: inhomogeneous distribution. These patterns were compared with lung function tests. There was no significant correlation between type I and type II in lung function tests. Type III was different from type I and type II in inhomogeneous distribution. This finding showed no correlation with %VC, FEVsub(1.0)%, MMF, V radical50 and V radical50/V radical25, but good correlation with V radical25 in a maximum forced expiratory flow-volume curve. Flow-volume curve is one of the sensitive methods in early detection of COPD, so inhomogeneous distribution of type III is considered to be due to small airway dysfunction.

  13. New agents for scintigraphy in rheumatoid arthritis

    International Nuclear Information System (INIS)

    Bois, M.H.W. de; Pauwels, E.K.J.; Breedveld, F.C.

    1995-01-01

    Radiopharmaceuticals have been used as investigative tools for the detection and treatment of arthritis activity in rheumatoid arthritis (RA) since the 1950s. Against the background of the pathophysiology of RA, the current status of joint scintigraphy and possible future developments are reviewed. Both non-specific (radiolabelled leucocytes and technetium-99m labelled human immunoglobulin) and specific targeting radiopharmaceuticals (including radiolabelled antibodies) are considered. The use of radiopharmaceuticals in the detection of arthritis activity has the advantages of allowing direct imaging of joints by means of whole-body scintigraphy and of joints that are difficult to assess clinically or radiographically. Promising results have been obtained with radiolabelled anti-CD4 and anti-E-selectin antibodies and with somatostatin receptor imaging, but more data are available regarding 99m Tc-IgG scintigraphy, which differentiates between the various degrees of arthritis activity and thus facilitates the choice of antirheumatic drug. Newer promising approaches to the imaging of RA include the use of radiolabelled J001 and cytokines, though studies on these are limited at present. (orig.)

  14. Brain scintigraphy in patients with hydrocephalus

    International Nuclear Information System (INIS)

    Kadowaki, Hirotaka; Imanaga, Hirohisa; Kitamura, Koichi

    1975-01-01

    Brain scintigraphy is a simple, innocuous and valuable diagnostic method. Particulary in children, in order to minimize damage by examination, brain scintigraphy should be the first examination for patients, before other diagnostic methods such as cerebral angiography and pneumoencephalography. In the 3 years between Jan. 1970 and Dec. 1972, 235 children under the age of 15 years had brain scintigraphy with sup(99m)Tc pertechnetate at the Tokyo Women's Medical College Hospital. The authors especially attended to the findings of scintigrams in children with hydrocephalus. 29 children with non-neoplastic hydrocephalus were scanned with sup(99m)Tc pertechnetate: noncommunicating hydrocephalus; 9; hydroencephalodysplasia; 4; Chiari Arnold malformation; 1; cranium bifidum; 2; communicating hydrocephalis; 13. In noncommunicating hydrocephalus, the midline structure on the scintigram appeared thicker than the normal, because activity in the superior sagittal sinus was relatively high compared to the reduction of activity in the enlarged ventricles. In cases of very severe hydrocephalus, the basal ganglia was shown as a clear hot spot on the scintigram, because R. I. activity in the basal ganglia was relatively high compared to the reduction of R. I. activity in the enlarged ventricles. In cases of hydroencephalodysplasia, the midline structure on the scintigram shifted to the side opposite the dysplasia, as the result of pressure from a large CSF collection. In cases of cranium bifidum, the scintigram showed an elevation of the transverse sinus and the confluent sinus. (auth.)

  15. Functional bone marrow scintigraphy in psoriatics

    International Nuclear Information System (INIS)

    Munz, D.; Altmeyer, P.; Chilf, G.; Schlesinger, G.; Holzmann, H.; Hoer, G.

    1982-01-01

    24 psoriatics as well as 24 normal healthy adults were studied by functional bone marrow scintigraphy using Tc-99m-labeled human serum albumin millimicrospheres (Tc-99m-HSA-MM). Functional bone marrow scintigraphy is an in vivo test system for the assessment of various functional properties of fixed macrophages. 58% of psoriatics who had no systemic drug treatment demonstrated peripheral extension of the bone marrow space indicating hyperplasia of bone marrow macrophages. This phenomenon could be observed only in one normal subject who was a high-performance sportsman. 83% (n=6) of psoriatics with cirrhosis of liver demonstrated bone marrow extension. The 'capacity' of bone marrow macrophages to engulf Tc-99m-HSA-MM ('uptake ratio') was diminished in 42% of non-treated as well as 66% of psoriatics treated with aromatic retinoid. The phagocytic and proteolytic turnover of Tc-99m-HSA-MM in bone marrow, spleen, and liver was found to be accelerated in 66% of non-treated psoriatics, normal, accelerated or delayed in psoriatics treated with aromatic retinoid as well as considerably delayed in all of the psoriatics with cirrhosis of liver. Functional bone marrow scintigraphy proved to be an appropriate in vivo test system to reveal abnormalities of fixed macrophages in psoriatics. Furthermore, theratpeutic effects as well as influences of pre-existing disorders on different macrophage populations can be assessed. (Author)

  16. Prona positioning in patients submitted to myocardial perfusion scintigraphy; Posicao prona em pacientes submetidos a cintilografia de perfusao miocardica

    Energy Technology Data Exchange (ETDEWEB)

    Cunha, C.J.; Ferreira, F.C.L.; Dullius, M.A.; Souza, S.O.; Souza, D.N. [Universidade Federal de Sergipe (UFS), Sao Cristovao, SE (Brazil). Dept. de Fisica; Carvalho, C.R.A. [Clinica de Medicina Nuclear Endocrinologia e Diabetes, Aracaju, SE (Brazil)

    2011-10-26

    The myocardium perfusion scintigraphy corresponds at the nuclear medicine to one of best diagnostic methods for myocardium diseases. However, artefacts generated by the diaphragmatic tissue can induce to false positive diagnostic when does not occurs association of the image in supine position with the prone position. Images acquired at the two positions were analysed and the evaluation of tomographic images were estimation and consequently, a more completed diagnostic

  17. The role of continuing education in meeting the radiologic technologist's needs in an ever-changing health care market

    International Nuclear Information System (INIS)

    Wilmot, D.J.

    1987-01-01

    Continuing education has very quickly become a vital part of the daily life of the radiologic technologist. As a result of the computer age and its effect on medical imaging equipment and applications for patients, technologists must strive to keep abreast of constant changes. This discussion deals with the importance of continuing education and the various methods in practice today

  18. Report: dosimetry of diagnostic exams in nuclear medicine

    International Nuclear Information System (INIS)

    Touzery, C.; Aubert, B.; Caselles, O.; Gardin, I.; Guilhem, M.Th.; Laffont, S.; Lisbona, A.

    2002-01-01

    A compilation about dosimetry of diagnosis explorations in nuclear medicine is presented in this issue. Dosimetry tables of the different radiopharmaceuticals used in nuclear medicine give indications on absorbed and efficient doses according the patients age from one year to adult age. The doses received by a fetus during a lung scintigraphy realized for the pregnant woman susceptible to suffer of pulmonary emboli is presented. A table of efficient doses for the infants until the age of six months for the principal scintigraphy explorations realized in nuclear medicine are given. A chapter of theoretical headlines is devoted to dosimetry and the calculations methods of absorbed and efficient doses in function of patients age. A short chapter concerns the recommendations to explore nursing mothers by scintigraphy. A last chapter treats the efficient doses received during explorations using ionizing radiations in radiology and their place in annual natural irradiation scale. (N.C.)

  19. Annual congress of the European Association of Nuclear Medicine. EANM'14. Abstracts

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2014-10-15

    The proceedings of the annual congress of the European Association of Nuclear Medicine EANM'14 contain abstracts on the following issues: nuclear cardiology practices, PET in lymphoma, advances in nuclear cardiology, dosimetry for intra-arterial treatment in the liver, pediatric nuclear medicine, therapeutic nuclear medicine, SPECT/CT, prostate cancer, extended competencies for nuclear medicine technologists, neurosciences - neurodegeneration and neuroinflammation, radionuclide therapy and dosimetry - preclinical studies, physics and instrumentation, clinical molecular imaging, conventional and specialized nuclear medicine.

  20. Designing a Visual Factors-Based Screen Display Interface: The New Role of the Graphic Technologist.

    Science.gov (United States)

    Faiola, Tony; DeBloois, Michael L.

    1988-01-01

    Discusses the role of the graphic technologist in preparing computer screen displays for interactive videodisc systems, and suggests screen design guidelines. Topics discussed include the grid system; typography; visual factors research; color; course mobility through branching and software menus; and a model of course integration. (22 references)…

  1. A national survey of occupational radiation exposure among diagnostic radiologic technologists in South Korea

    International Nuclear Information System (INIS)

    Lee, Jeeyoung; Cha, Eun Shil; Jeong, Meeseon; Lee, Won Jin

    2015-01-01

    The objective of this study was to investigate representative occupational characteristics and radiation exposure for South Korean radiologic technologists. The authors conducted a national survey by stratified sampling of South Korean administrative districts and types of medical facilities. A total of 585 technologists were surveyed, and survey data were linked with dosimetry data from the National Dose Registry. A total of 73 % of radiologic technologists sampled were male, 62 % were younger than age 40 and 86.5 % began employment after 1990. The most frequent practices among radiologic technologists were diagnostic routine X-ray followed by computed tomography (CT) and portable X-ray. Male workers were more frequently involved in CT, portable X-ray and interventional radiology whereas female workers carried out most mammography procedures. The average annual effective dose was 2.3 mSv for male and 1.3 mSv for female workers. The dose was significantly higher for workers in the provinces and those who had recently started work. (authors)

  2. Occupational Analysis: Hospital Radiologic Technologist. The UCLA Allied Health Professions Project.

    Science.gov (United States)

    Reeder, Glenn D.; And Others

    In an effort to meet the growing demand for skilled radiologic technologists and other supportive personnel educated through the associate degree level, a national survey was conducted as part of the UCLA Allied Health Professions Project to determine the tasks performed by personnel in the field and lay the groundwork for development of…

  3. Patient comfort from the technologist perspective: factors to consider in mammographic imaging

    Directory of Open Access Journals (Sweden)

    Mendat CC

    2017-05-01

    Full Text Available Christina C Mendat,1 Dave Mislan,2 Lisa Hession-Kunz2 1Human Factors MD, Charlotte, NC, 2Hologic Inc., Marlborough, MA, USA Abstract: A sample size of 280 certified mammography technologists were surveyed to understand what factors affect patient discomfort during breast imaging. Given mammography technologists’ level of patient involvement, they are uniquely positioned to observe factors that affect patient comfort. The findings suggest that according to technologists, multiple factors, including patient ethnicity, breast density, previous biopsy and lumpectomy experience, as well as psychological factors, impact breast discomfort during mammography. Additionally, with respect to imaging protocols, technologists attributed 80% of moderate-to-extreme discomfort to “length of compression time” (27% and “compression force” (53%. Technologists also attributed “pinching at chest wall” and “hard edges of breast platform” to “very high” discomfort significantly more times (P<0.05 than “coolness and edges of paddle”. These findings confirm some of what has been reported to date and challenge other findings. Given that recent decline in breast cancer mortality has been attributed to improvements in early detection and treatment, approaches to reduce discomfort should be considered in order to promote screening compliance. Although more research is needed, it is apparent that the patient experience of comfort and pain during mammography is an area warranting increased research and solutions. Keywords: mammography, discomfort, pain, density, compliance, breast

  4. Multimedia Competencies for an Educational Technologist: A Survey of Professionals and Job Announcement Analysis

    Science.gov (United States)

    Ritzhaupt, Albert; Martin, Florence; Daniels, Katharine

    2010-01-01

    This paper examines the multimedia competencies of an educational technologist via a job announcements analysis and survey of professionals within the field. A conceptual framework is provided involving the new definition of the field of educational technology and associated knowledge, skill, and ability statements. Two hundred five unique job…

  5. Study on the usefulness of whole body SPECT coronal image, MIP image in 67Ga scintigraphy

    International Nuclear Information System (INIS)

    Kawamura, Seiji

    2002-01-01

    In this study, we examined the usefulness of whole body coronal images and whole body cine display MIP images (CMIP) upon which image processing was carried out after whole body SPECT in comparison to the usefulness of whole body images (WB/SC) compensated by scattered radiation in tumor/inflammation scintigraphy with 67 Ga-citrate ( 67 Ga). Image interpretation was performed for the 120 patients with confirmed diagnoses, and the accuracy of their diagnoses was studied by three nuclear medical physicians and two clinical radiological technologists by means of sensitivity, specificity and ROC analysis. The resultant data show that sensitivity, specificity, accuracy and the area under the ROC curve Az in the WB/SC were approximately 65%, 86%, 74% and 0.724, respectively, whereas sensitivity, specificity, accuracy and Az of the image reading system in which CMIP is combined with whole body coronal images reconstructed by the OS-EM method were approximately 93%, 95%, 94% and 0.860, respectively. Furthermore, coronal images reconstructed by the OS-EM method tended to be superior to those produced by the FBP method in both diagnostic accuracy and ROC analysis. In conclusion, the image reading system in which CMIP is combined with whole body coronal images reconstructed by the OS-EM method was shown to be superior in diagnostic accuracy and ROC analysis. Our data suggest that whole body SPECT is an excellent technique as an alternative to WB/SC. (author)

  6. Analyzing the glass ceiling effect among radiologic technologists.

    Science.gov (United States)

    Belinsky, Susan B; Blagg, James D

    2011-01-01

    The literature has suggested that advancement within politics, academia and the health professions is influenced by gender. Purpose The authors conducted a survey to determine whether advancement was equal by gender in the radiologic science disciplines of nuclear medicine technology, radiation therapy and radiography. The survey was mailed to 900 subjects, 300 from each discipline. The discipline groups were further stratified by initial year of American Registry of Radiologic Technology certification; the authors selected 100 subjects from each discipline who initially were certified in 1978, 100 in 1988 and 100 in 1998. Approximately 33% of those selected responded. The findings of the study provided no evidence that men are promoted differentially than women. Women perceived that men were paid more for the same work. It appears that gender bias is pervasive outside of promotion decisions and, indeed, that some illegal actions (eg, sexual harassment, inappropriate gender-related interview questions) take place in radiologic science clinical settings. It is hoped that this study will set a baseline for future research on whether there is a glass ceiling effect in radiologic clinical practice and stimulate discussion of the importance of equal opportunity regardless of gender.

  7. Contributions of scintigraphy and sonography to the diagnosis of traumatic splenic lesions in children

    International Nuclear Information System (INIS)

    Soucy, J.P.; Danais, S.; Filiatrault, D.; Lamoureux, J.; Lamoureux, F.

    1984-01-01

    20 children who were sent to the Nuclear Medicine and Sonography services for evaluation of the spleen in the context of a history of abdominal trauma were studied. All but one of the children were treated conservately, the exception having had on emergency renal procedure performed for renal rupture. The working diagnosis, based on the clinical that of splenic trauma in all cases. The result show a sensitivity of 90% (2 false negatives) for scintigraphy, and of 30% (14 false negatives) for sonography for the non-invasive diagnosis of splenic trauma in children [fr

  8. Contributions of scintigraphy and sonography to the diagnosis of traumatic splenic lesions in children

    Energy Technology Data Exchange (ETDEWEB)

    Soucy, J.P.; Danais, S.; Filiatrault, D.; Lamoureux, J.; Lamoureux, F. (Hopital Sainte-Justine, Montreal (Canada))

    1984-01-01

    20 children who were sent to the Nuclear Medicine and Sonography services for evaluation of the spleen in the context of a history of abdominal trauma were studied. All but one of the children were treated conservately, the exception having had on emergency renal procedure performed for renal rupture. The working diagnosis, based on the clinical, was that of splenic trauma in all cases. The results show a sensitivity of 90% (2 false negatives) for scintigraphy, and of 30% (14 false negatives) for sonography for the non-invasive diagnosis of splenic trauma in children.

  9. Technetium-99m HMPAO labelled-leukocytes and gallium-67 scintigraphies in a Munchhausen's syndrome

    International Nuclear Information System (INIS)

    Alberini, J.L.; Devaux, J.Y.; Tenenbaum, F.; Richard, B.; Dell'Isola, D.

    2000-01-01

    We report an observation of investigations performed in a patient with several cervical abscesses in his previous history. Aim of scintigraphic examinations was to detect an evolutive infection and/or to identify a general disease like granulomatosis. Although there was no abnormality on the labelled-leucocytes scintigraphy, an infra-mandibular uptake was observed 10 days later on 67 Ga, without bone involvement. This 'discrepancy' between scintigraphic results and the clinical evolution allowed to confirm its management in nuclear medicine were discussed. (author)

  10. The radiologic technologists' health study in South Korea. Study design and baseline results

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Won Jin [Korea Univ. College of Medicine, Seoul (Korea, Republic of). Dept. of Preventive Medicine; Ha, Mina [Dankook Univ. College of Medicine, Cheonan (Korea, Republic of). Dept. of Preventive Medicine; Hwang, Seung-sik [Inha Univ. School of Medicine, Incheon (Korea, Republic of). Dept. of Social and Preventive Medicine; and others

    2015-08-15

    To describe the study design, methods, and baseline results of a prospective cohort of radiologic technologists which we have initiated in South Korea. The cohort participants were enrolled through a self-administered questionnaire survey administered from April 2012 to May 2013. Survey data were linked with radiation dosimetry, a cancer registry, and health insurance data by personal identification numbers. A nationwide representative survey was also conducted using a stratified random sampling design with face-to-face interviews. A total of 12,387 radiologic technologists were enrolled, which accounted for approximately 63 % of all diagnostic radiologic technologists working in South Korea. For nationwide survey, 585 workers were interviewed using the detailed questionnaire, and buccal cells were also collected by scraping the inside of the cheek. The majority of study subjects were under 50-year-old and male workers. The average annual effective dose of radiation declined both men (from 2.75 to 1.43 mSv) and women (from 1.34 to 0.95 mSv) over the period of 1996-2011. A total of 99 cancers (66 cancers in men and 33 in women) were reported from 1992 to 2010. The standardized incidence ratio of all cancer combined was significantly lower in men (SIR = 0.75, 95 % CI 0.58-0.96) than general population, but the ratios for thyroid cancer were significantly higher than expected among both men and women. This cohort provides comprehensive information on work activities and health status of diagnostic radiologic technologists. In addition, the nationwide representative sample provides unique opportunities compared with previous radiologic technologist studies.

  11. The radiologic technologists' health study in South Korea: study design and baseline results.

    Science.gov (United States)

    Lee, Won Jin; Ha, Mina; Hwang, Seung-sik; Lee, Kyoung-Mu; Jin, Young-Woo; Jeong, Meeseon; Jun, Jae Kwan; Cha, Eun Shil; Ko, Yousun; Choi, Kyung-Hwa; Lee, Jung-Eun

    2015-08-01

    To describe the study design, methods, and baseline results of a prospective cohort of radiologic technologists which we have initiated in South Korea. The cohort participants were enrolled through a self-administered questionnaire survey administered from April 2012 to May 2013. Survey data were linked with radiation dosimetry, a cancer registry, and health insurance data by personal identification numbers. A nationwide representative survey was also conducted using a stratified random sampling design with face-to-face interviews. A total of 12,387 radiologic technologists were enrolled, which accounted for approximately 63% of all diagnostic radiologic technologists working in South Korea. For nationwide survey, 585 workers were interviewed using the detailed questionnaire, and buccal cells were also collected by scraping the inside of the cheek. The majority of study subjects were under 50-year-old and male workers. The average annual effective dose of radiation declined both men (from 2.75 to 1.43 mSv) and women (from 1.34 to 0.95 mSv) over the period of 1996-2011. A total of 99 cancers (66 cancers in men and 33 in women) were reported from 1992 to 2010. The standardized incidence ratio of all cancer combined was significantly lower in men (SIR = 0.75, 95% CI 0.58-0.96) than general population, but the ratios for thyroid cancer were significantly higher than expected among both men and women. This cohort provides comprehensive information on work activities and health status of diagnostic radiologic technologists. In addition, the nationwide representative sample provides unique opportunities compared with previous radiologic technologist studies.

  12. The radiologic technologists' health study in South Korea. Study design and baseline results

    International Nuclear Information System (INIS)

    Lee, Won Jin; Ha, Mina; Hwang, Seung-sik

    2015-01-01

    To describe the study design, methods, and baseline results of a prospective cohort of radiologic technologists which we have initiated in South Korea. The cohort participants were enrolled through a self-administered questionnaire survey administered from April 2012 to May 2013. Survey data were linked with radiation dosimetry, a cancer registry, and health insurance data by personal identification numbers. A nationwide representative survey was also conducted using a stratified random sampling design with face-to-face interviews. A total of 12,387 radiologic technologists were enrolled, which accounted for approximately 63 % of all diagnostic radiologic technologists working in South Korea. For nationwide survey, 585 workers were interviewed using the detailed questionnaire, and buccal cells were also collected by scraping the inside of the cheek. The majority of study subjects were under 50-year-old and male workers. The average annual effective dose of radiation declined both men (from 2.75 to 1.43 mSv) and women (from 1.34 to 0.95 mSv) over the period of 1996-2011. A total of 99 cancers (66 cancers in men and 33 in women) were reported from 1992 to 2010. The standardized incidence ratio of all cancer combined was significantly lower in men (SIR = 0.75, 95 % CI 0.58-0.96) than general population, but the ratios for thyroid cancer were significantly higher than expected among both men and women. This cohort provides comprehensive information on work activities and health status of diagnostic radiologic technologists. In addition, the nationwide representative sample provides unique opportunities compared with previous radiologic technologist studies.

  13. The Job Consciousness for Radiological Technologists in Korea, Canada, and Australia

    International Nuclear Information System (INIS)

    Han, Eun Ok; Kwon, Deok Mun; Park, Kwang Hun; Choi, Seung Yoon; Jung, Chung Hyun; Bae, Sang Il; Oh, Chang Woo

    2009-01-01

    This study attempts to provide basic information on overseas employment to the radiological technologists and students majoring in radiology in Korea who consider the overseas employment by investigating the job consciousness for radiological technologists in Canada and Australia which have a high level of interest for overseas employment and want to compare their status with that of Korean radiological technologists. This study was performed by visiting hospitals such as Prince George Regional Hospital, 1475 Edmonton Street, Prince George, BC, Canada on August 13, 2007, Alfred Hospital, Commercial Road Melbourne 3004, Australia on August 4, 2008, and other Korea hospitals that show the similar scale as Canada and Australia on September 10, 2007. The results were summarized as follows : 1. Differences were observed in this sexual composition, such as 18 males (90%) in Korea, 14 females (73.7%) in Canada, and 25 females in Australia (86.2%). 2. The item of 'aptitude' which is one of the most important criteria, showed the highest level in Korea, Canada, and Australia, and the second most considered item was 'salary'. 3. In the values in jobs, the items of 'economic self-sufficiency', 'recognized by others', and 'establishing a social position' represented high levels in Korea, and the items of 'like the job itself', 'establishing self-actualization', 'feel the meaning of life', and 'make new friends' showed high levels in Canada and Australia. 4. Regarding the item of 'a job is important as much as a marriage', 'Yes' showed high level in Korea, and 'No' showed high levels in Canada and Australia. 5. Radiological technologists in Korea demonstrated a low level in the job consciousness compared to those of Canada and Australia. Although this study shows some limitations for showing whole idea of radiological technologists due to the lack of the scope in samples for each country as a practical manner, this study can be regarded significant to compare some countries

  14. Employment in nuclear medicine during pregnancy

    International Nuclear Information System (INIS)

    Benedetto, A.R.

    1986-01-01

    A nuclear medicine technologist can work throughout a pregnancy with high confidence that her occupational radiation exposure will not add any significant risk to her changes of having a normal pregnancy and child. All that is required is for the employer to provide an ALARA work place and for the technologist to observe carefully all radiation safety guidelines and to maintain her occupational exposure ALARA. Current guidance is that the total uterine dose during gestation be less than 0.5 rem (5 mSv). The vast majority of nuclear medicine technologists can achieve this dose level easily, with no modifications of duties or work practices. Technologists working with generators and radiopharmaceutical kits may wish to temporarily transfer to other duties within the clinic, not necessarily to reduce routine exposures but to minimize the changes of an accident having high-dose or high-contamination potential. All of the available human data show that there is small additional risk to the fetus or neonate due to occupational radiation exposure compared to naturally occurring risks so long as the dose is within recommended guidelines

  15. Sodium pertechnetate scintigraphy in detection of Meckel's diverticulum

    DEFF Research Database (Denmark)

    Poulsen, K A; Qvist, N

    2000-01-01

    OBJECTIVE: To evaluate the results of 99mTc-Na-pertechnetate scintigraphy in children presenting with symptoms suspicious of Meckel's diverticulum (MD). METHOD: Retrospective study. A total of 55 99mTc-Na-pertechnetate scintigraphies in 53 patients were compared with the results from surgery and ...

  16. Unknown and abnormal accumulation in the chest in bone scintigraphy

    International Nuclear Information System (INIS)

    Maruyama, Toshiaki; Takeuchi, Masashi; Tokunaga, Koji; Maeda, Yoichi; Hasegawa, Kazuhiko.

    1979-01-01

    In scintigraphies of forty patients with hemiplegia following appoplexia, focal abnormal accumulations in the chest region were seen in bone scintigraphies of four patients. These hot accumulations could be neither rib fracture, rib metastases, nor abnormal calcium accumulation. A mechanism of these accumulation remains to undicided. We believe that this phenomena is related to abnormal bone metabolism in hemiplegial condition. (author)

  17. Bone scintigraphy during therapy with cytostatically acting drugs

    International Nuclear Information System (INIS)

    Schmidt, U.; Pries, H.H.; Joseph, K.; Mahlstedt, J.; Marburg Univ.

    1976-01-01

    Case reports show up, that bone scintigraphy during therapy of metastasing cancer of mamma or prostata with cytostatically acting drugs may reveal 'pseudonormal' results. False negative diagnosis can be excluded only by carefully regarding drug history. Gamma-camera with wholebody scan device for scintigraphy in two projections simplifies safe evaluation significantly. (orig.) [de

  18. Bile ascites in adults. Diagnosis using hepatobiliary scintigraphy and paracentesis

    International Nuclear Information System (INIS)

    Nagle, C.E.; Fink-Bennett, D.; Freitas, J.E.

    1985-01-01

    Hepatobiliary scintigraphy has been recognized as a useful diagnostic tool in detecting the presence and site of bile leaks. The authors report a case of bile ascites secondary to a postsurgical biliary leak, the scintigraphic findings in bile ascites, and the potential use of paracentesis, in combination with hepatobiliary scintigraphy, in confirming the presence of bile ascites and a bile leak

  19. Gallium67 scintigraphy in fibrinous pericarditis associated with bacterial endocarditis

    International Nuclear Information System (INIS)

    Martin, P.; Verhas, M.; Devriendt, J.; Goffin, Y.

    1982-01-01

    An 80-year-old man presented with pyrexia, progressive cardiac failure and inflammation. A diagnosis of pericarditisd associated with bacterial endocarditis was suggested from Gallium 67 scintigraphy and confirmed at autpsy. This case of fibrinous pericarditis without effusion could not be diagnosed by echography or routine cardiopulmonary scintigraphy. (orig.)

  20. Physics and radiobiology of nuclear medicine

    CERN Document Server

    Saha, Gopal B

    2013-01-01

    The Fourth Edition of Dr. Gopal B. Saha’s Physics and Radiobiology of Nuclear Medicine was prompted by the need to provide up-to-date information to keep pace with the perpetual growth and improvement in the instrumentation and techniques employed in nuclear medicine since the last edition published in 2006. Like previous editions, the book is intended for radiology and nuclear medicine residents to prepare for the American Board of Nuclear Medicine, American Board of Radiology, and American Board of Science in Nuclear Medicine examinations, all of which require a strong physics background. Additionally, the book will serve as a textbook on nuclear medicine physics for nuclear medicine technologists taking the Nuclear Medicine Technology Certification Board examination.

  1. Renal transplant scintigraphy (Part 1)

    International Nuclear Information System (INIS)

    Chew, Ghee

    2005-01-01

    Renal transplantation is the most effective mode of renal replacement therapy for correction of renal failure. Renal donors can either be: a. a deceased person - the kidneys being removed when brain death or absence of cerebral cortical function / perfusion is confirmed - the cadaveric kidney is packed in ice and nutrient solution and transplanted within 24 hours of removal ('cold ischemia') ob. a living donor - the donor may or may not be related to the recipient. Due to the limited length of the renal vessels and ureter of the donor kidney, it is implanted close to the bladder of the recipient. The donor vessels are anastomosed to the iliac artery and vein of the recipient. Transplant variants: a. 2 kidneys maybe transplanted because: - an old donor with less kidney reserve from atrophy due to age or disease (e.g. hypertension) - an infant donor when both kidneys are removed en bloc, b. Donor kidneys with more than 1 artery, vein or ureter. c. Donor horse shoe kidney d. Combined renal and pancreas transplant for type I diabetics -a short segment of duodenum transplanted with the pancreas maybe implanted into the bladder. Copyright (2005) The Australian and New Zealand Society of Nuclear Medicine

  2. Risk of Hematopoietic and Lymphoproliferative Malignancies among U. S. Radiologic Technologists

    International Nuclear Information System (INIS)

    Linet, M. S.; Fredman, D. M.; Mohan, A.; Morin Doody, M.; Ron, E.; Mabuchi, K.; Alexander, B. B.; Sigurdson, A.; Matanoski, G.; Hauptmann, M.

    2004-01-01

    To evaluate risks of hematopoietic and lymphoproliferative malignancies among medical workers exposed to protracted low-to-moderate-dose radiation exposures, a follow-up investigation was conducted in a nation wide cohort of U. S. radiologic technologists. eligible for this study were 71.894 technologists (78% female) certified for at least 2 years during 1926-82, who had responded to a baseline mail questionnaire during 1983-89, were cancer-free except for non-melanoma skin cancer at completion of the questionnaire, and completed a second questionnaire during 1994-98 or died through August 1998. There were 241 technologists with hematopoietic or lymphoproliferative malignancies, including 41 with leukemia subtypes associated with radiation exposures (specifically acute myeloid, acute lymphoid and chronic myeloid leukemias, hereafter designated radiogenic leukemias), 23 with chronic lymphocytic leukemia, 28 with multiple myeloma, 118 with non-Hodgkin lymphoma, and 31 with Hodgkin lymphoma. Of the 241 hematopoietic or lymphoproliferative malignancies identified among radiologic technologists, 85 percent were confirmed by medical records or death certificates, including 98 percent of radiogenic leukemia. Risks of the hematopoietic or lymphoproliferative malignancies were evaluated in relation to questionnaire-derived information on employment as a radiologic technologist, including procedures, work practices, and protective measures. cox proportional hazards regression analysis was used to compute relative risks and 95% confidence intervals, using age at diagnosis as the response, stratifying at baseline for birth cohort in 5-year intervals, and adjusting for potential confounding. Risks were not increased for any of the hematopoietic or lymphoproliferative neoplasms according to year first worked or total duration of years worked as radiologic technologist. For the combined radiogenic leukemias, risks rose significantly with an increasing number of years worked

  3. Bone scintigraphy on chronic hemodialyzed patients

    International Nuclear Information System (INIS)

    Koizumi, Yoshiko

    1990-01-01

    Patients with renal osteodystrophy (ROD) are classified into four types (secondary hyperparathyroidism: HPT, osteomalasia, ectopic calcification and normal bone scintigram type) according to findings of whole body bone scintigrams. Markedly high accumulations of Tc-99m-MDP are seen in the skull, especially in patients with HPT. For a quantitative evaluation of bone mineral dynamics, factor analysis (FA) was performed on bone scintigraphy in 36 patients with ROD and in 17 controls. Four were examined before and after parathyroidectomy (PTX). In the early phase (20 min) of bone scintigraphy, the bone factor was clearly extracted by FA. Two original parameters were calculated, one is bone radionuclide (RN) uptake count (BUC), the product of the total RN uptake count of the head and the contribution ratio, the other is bone RN uptake count ratio (BUR) derived by the time activity curve (physiological component of bone) of FA. Bone factor shown by FA is significantly different among patients with HPT, osteomalasia and controls. The value of BUC in patients with HPT is high compared to findings in the controls. The results of FA of ROD correlate well with planar images of bone scintigrams and with data on bone minerals, measured by quantitative methods such as single photon absorptiometry, CT attenuation number of the frontal bone, RN activity ratio ([frontal bone]/[brain]), using SPECT of bone scan. In the cases of PTX, the value of BUC was improved compared to preoperative data. FA of bone scintigraphy is a sensitive and useful method for quantitative evaluation of bone mineral dynamics and to assess the therapeutic effects in ROD. (author)

  4. Applicability of the Appropriate use Criteria for Myocardial Perfusion Scintigraphy

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Anderson de [Universidade Federal Fluminense - UFF, Niterói, RJ (Brazil); Comissão Nacional de Energia Nuclear - CNEN (Brazil); Rezende, Maria Fernanda [Universidade Federal Fluminense - UFF, Niterói, RJ (Brazil); Hospital Pró-Cardíaco, Rio de Janeiro, RJ (Brazil); Corrêa, Renato; Mousinho, Rodrigo [Hospital Pró-Cardíaco, Rio de Janeiro, RJ (Brazil); Azevedo, Jader Cunha [Universidade Federal Fluminense - UFF, Niterói, RJ (Brazil); Hospital Pró-Cardíaco, Rio de Janeiro, RJ (Brazil); Miranda, Sandra Marina; Oliveira, Aline Ribeiro [Universidade Federal Fluminense - UFF, Niterói, RJ (Brazil); Gutterres, Ricardo Fraga [Comissão Nacional de Energia Nuclear - CNEN (Brazil); Mesquita, Evandro Tinoco; Mesquita, Cláudio Tinoco [Universidade Federal Fluminense - UFF, Niterói, RJ (Brazil); Hospital Pró-Cardíaco, Rio de Janeiro, RJ (Brazil)

    2014-11-15

    Appropriateness Criteria for nuclear imaging exams were created by American College of Cardiology (ACC) e American Society of Nuclear Cardiology (ASNC) to allow the rational use of tests. Little is known whether these criteria have been followed in clinical practice. To evaluate whether the medical applications of myocardial perfusion scintigraphy (MPS) in a private nuclear medicine service of a tertiary cardiology hospital were suitable to the criteria of indications proposed by the American medical societies in 2005 and 2009 and compare the level of indication of both. We included records of 383 patients that underwent MPS, November 2008 up to February 2009. Demographic characteristics, patient's origin, coronary risk factors, time of medical graduation and appropriateness criteria of medical applications were studied. The criteria were evaluated by two independent physicians and, in doubtful cases, defined by a medical expert in MPS. Mean age was 65 ± 12 years. Of the 367 records reviewed, 236 (64.3%) studies were performed in men and 75 (20.4%) were internee. To ACC 2005, 255 (69.5%) were considered appropriate indication and 13 (3.5%) inappropriate. With ACC 2009, 249 (67.8%) were considered appropriate indications and 13 (5.2%) inappropriate. We observed a high rate of adequacy of medical indications for MPS. Compared to the 2005 version, 2009 did not change the results.

  5. Normal anatomy of lung perfusion SPECT scintigraphy

    International Nuclear Information System (INIS)

    Moskowitz, G.W.; Levy, L.M.

    1987-01-01

    Ten patients studies for possible pulmonary embolic disease had normal lung perfusion planar and SPECT scintigraphy. A computer program was developed to superimpose the CT scans on corresponding SPECT images. Superimposition of CT scans on corresponding SPECT transaxial cross-sectional images, when available, provides the needed definition and relationships of adjacent organs. SPECT transaxial sections provide clear anatomic definition of perfusion defects without foreground and background lung tissue superimposed. The location, shape, and size of the perfusion defects can be readily assessed by SPECT. An algorithm was developed for the differentiation of abnormal pulmonary perfusion patterns from normal structures on variation

  6. Possible uses of skeletal scintigraphy in traumatology

    International Nuclear Information System (INIS)

    Tittel, K.

    1986-01-01

    With customary X-ray examinations bone changes and traumatic lesions remain undetectable so long, because the contour changes are missing or the thickness and density differences are too small. Skeletal scintigraphy helps fill in these gaps in diagnosis, which can be especially important with patients with multiple injuries. The demands for an appropriate radiopharmaceutical are best filled by 99m Tc-methylene diphosphonate. The examination procedure after the injection of a bolus of 10-20 mCi 99m Tc-MDP is described and the indications are listed. (MG) [de

  7. Bone scintigraphy in painful os peroneum syndrome

    DEFF Research Database (Denmark)

    Jeppesen, Johanne B; Jensen, Frank K; Falborg, Bettina

    2011-01-01

    Lateral foot pain may be caused by various entities including the painful os peroneum syndrome. A case of a 68-year-old man is presented, who experienced a trauma with distortion of the right foot. Nine months later, he still had pain in the lateral part of the right foot. Bone scintigraphy showed...... uptake in the area where an os peroneum was located and thus confirmed the clinical assumption of painful os peroneum syndrome. Familiarity with the clinical and imaging findings can prevent undiagnosed lateral foot pain....

  8. Bone scintigraphy in painful os peroneum syndrome

    DEFF Research Database (Denmark)

    Jeppesen, Johanne B; Jensen, Frank K; Falborg, Bettina

    2011-01-01

    Lateral foot pain may be caused by various entities including the painful os peroneum syndrome. A case of a 68-year-old man is presented, who experienced a trauma with distortion of the right foot. Nine months later, he still had pain in the lateral part of the right foot. Bone scintigraphy showe...... uptake in the area where an os peroneum was located and thus confirmed the clinical assumption of painful os peroneum syndrome. Familiarity with the clinical and imaging findings can prevent undiagnosed lateral foot pain....

  9. Bone scintigraphy in hereditary multiple exostoses

    International Nuclear Information System (INIS)

    Epstein, D.A.; Levin, E.J.

    1978-01-01

    Two adult patients with multiple hereditary exostoses, a skeletal disorder with recognized malignant potential, each demonstrated increased /sup 99m/Tc diphosphonate uptake in an exostosis in which renewed growth had begun. None of the other multiple exostoses in either patient showed abnormal uptake. Histologic study of the lesions demonstrated chondrosarcoma in one case and benign osteochondroma in the second. Although bone scintigraphy nonspecifically identifies bone growth rather than malignant degeneration, it is more useful than radiographic bone survey in the periodic surveillance of adult patients with this disorder

  10. Scintigraphy with In-111 labeled leukocytes

    International Nuclear Information System (INIS)

    Itoh, Kazuo; Tsukamoto, Eriko; Furudate, Masayori; Saito, Chihoko.

    1987-01-01

    With increasing necessity for In-111 labeled leukocyte scintigraphy (ILLS) as a routine examination, a problem of complicated labeling of leukocytes has arisen. In this study, simplified labeling of leukocytes was examined with respect to its ability to detect abscesses. Simplified labeling method yielded significantly satisfactory results for recovery and labeling rates of leukocytes, as compared with conventional recommended method. Therefore, ILLS by simplified technique was clinically applied in 58 patients with suppurative or non-suppurative diseases who gave informed consent. In an analysis of ILLS for detecting suppurative region, the sensitivity, specificity, and corrected specificity were found to be 81 %, 75 %, and 82 %, respectively. (Namekawa, K.)

  11. Detection of the myocardium ischemia in scintigraphy

    International Nuclear Information System (INIS)

    Faraggi, M.; Pierquet-Ghazzar, N.; Maunoury, C.

    2005-01-01

    The myocardium scintigraphy (SPECT) gives excellent elements of prognosis allowing to select at the best, the patients having a revascularization, and then an angiography examination. It appears complementary of the coronaries tree imaging and should (in theory) be practised in first in an organisation chart of taking over. In the search of practicable myocardium, the PET with 18 FDG, although being competitive, is more and more forsaken to the MRI profit. In retaliation, the PET with 82 Rb with test of pharmacology stimulation could develop in detection of coronaries disease. (N.C.)

  12. Dynamic scintigraphy of the kidneys with lasix

    International Nuclear Information System (INIS)

    Yudin, L.A.; Reznichenko, A.A.; Uskov, I.A.; Gol'dman, V.E.; Ivanova, Yu.V.; Naryshkina, V.M.; Budkevich, Yu.B.

    1991-01-01

    Dynamic scintigraphy with lasix in patients with hydronephrosis, nephrolithialis, chronic pyelonephritis, ureterohydronephrosis on an initial scintigram has shown retention of 99m Tc-DTPA in the urinary tracts: an increase or absence of the excretory segment on the activity-time curve up to the appearance of an obstructive type of a curve. Verified operative findings have shown a high sensitivity and accuracy of the detection of stenosis of the urinary tracts in the absence of the excretory segment on an initial scintigram irrespective of the reaction of lasix administration

  13. Studies on bone scintigraphy in renal osteodystrophy

    Energy Technology Data Exchange (ETDEWEB)

    Tsuchimochi, Makoto (Nippon Dental Univ., Niigata)

    1983-12-01

    Bone scintigraphy was superior over roentgenography for detection of abnormal bone findings in chronic dialysis patients. According to the type of scintigraphic findings, an increase in the hot area in the cranium or the mandibule seemed to express fibrous osteitis due to secondary hyperparathyroidism. Multiple coin-shaped hot areas in ribs were thought to indicate advanced osteomalacia or osteomalacia in patients with aluminum poisoning. The 4 hr-B/St ratio of the cranium was thought to serve as a quantitative indicator of the status of fibrous osteitis due to secondary hyperparathyroidism to show the progress and therapeutic course of the disease.

  14. Interventional radiography and mortality risks in U.S. radiologic technologists

    Energy Technology Data Exchange (ETDEWEB)

    Linet, Martha S.; Freedman, D.M.; Sigurdson, Alice J.; Doody, Michele M. [National Cancer Institute, Radiation Epidemiology Branch, Division of Cancer Epidemiology and Genetics, Bethesda, MD (United States); Hauptmann, Michael [National Cancer Institute, Biostatistics Branch, Division of Cancer Epidemiology and Genetics, Bethesda, MD (United States); Alexander, Bruce H. [University of Minnesota, Division of Environmental Health Sciences, Minneapolis, MN (United States); Miller, Jeremy [Information Management Services, Inc., Rockville, MD (United States)

    2006-09-15

    With the exponential increase in minimally invasive fluoroscopically guided interventional radiologic procedures, concern has increased about the health effects on staff and patients of radiation exposure from these procedures. There has been no systematic epidemiologic investigation to quantify serious disease risks or mortality. To quantify all-cause, circulatory system disease and cancer mortality risks in U.S. radiologic technologists who work with interventional radiographic procedures, we evaluated mortality risks in a nationwide cohort of 88,766 U.S. radiologic technologists (77% female) who completed a self-administered questionnaire during 1994-1998 and were followed through 31 December 2003. We obtained information on work experience, types of procedures (including fluoroscopically guided interventional procedures), and protective measures plus medical, family cancer history, lifestyle, and reproductive information. Cox proportional hazards regression models were used to compute relative risks (RRs) with 95% confidence intervals (CIs). Between completion of the questionnaire and the end of follow-up, there were 3,581 deaths, including 1,209 from malignancies and 979 from circulatory system diseases. Compared to radiologic technologists who never or rarely performed or assisted with fluoroscopically guided interventional procedures, all-cause mortality risks were not increased among those working on such procedures daily. Similarly, there was no increased risk of mortality resulting from all circulatory system diseases combined, all cancers combined, or female breast cancer among technologists who daily performed or assisted with fluoroscopically guided interventional procedures. Based on small numbers of deaths (n=151), there were non-significant excesses (40%-70%) in mortality from cerebrovascular disease among technologists ever working with these procedures. The absence of significantly elevated mortality risks in radiologic technologists reporting the

  15. Investigating the experiences of New Zealand MRI technologists: Exploring intra-orbital metallic foreign body safety practices

    International Nuclear Information System (INIS)

    Jacobs, Philippa K; Henwood, Suzanne

    2013-01-01

    Qualitative research is lacking regarding the experiences of magnetic resonance imaging (MRI) technologists and their involvement in workplace safety practices. This article provides a gateway to explore, describe and document experiences of MRI technologists in New Zealand (NZ) pertaining to intra-orbital metallic foreign body (IMFB) safety practices. This phenomenological study describes the experiences of seven MRI technologists all with a minimum of 5 years' NZ work experience in MRI. The MRI technologists were interviewed face-to-face regarding their professional IMFB workplace experiences in order to explore historical, current and potential issues. Findings demonstrated that aspects of organization and administration are fundamentally important to MRI technologists. Varying levels of education and knowledge, as well as experience and skills gained, have significantly impacted on MRI technologists’ level of confidence and control in IMFB practices. Participants’ descriptions of their experiences in practice regarding decision-making capabilities further highlight the complexity of these themes. A model was developed to demonstrate the interrelated nature of the themes and the complexity of the situation in totality. Findings of this study have provided insight into the experiences of MRI technologists pertaining to IMFB safety practices and highlighted inconsistencies. It is hoped that these findings will contribute to and improve the level of understanding of MRI technologists and the practices and protocols involved in IMFB safety screening. The scarcity of available literature regarding IMFB safety practices highlights that more research is required to investigate additional aspects that could improve MRI technologists’ experiences

  16. Investigating the experiences of New Zealand MRI technologists: Exploring intra-orbital metallic foreign body safety practices

    Energy Technology Data Exchange (ETDEWEB)

    Jacobs, Philippa K [River Radiology, Victoria Clinic, 750 Victoria Street, Hamilton, Waikato (New Zealand); Henwood, Suzanne [Unitec - Medical Imaging, Unitec Ratanui Street Henderson, Auckland (New Zealand); River Radiology, Victoria Clinic, 750 Victoria Street, Hamilton, Waikato (New Zealand)

    2013-12-15

    Qualitative research is lacking regarding the experiences of magnetic resonance imaging (MRI) technologists and their involvement in workplace safety practices. This article provides a gateway to explore, describe and document experiences of MRI technologists in New Zealand (NZ) pertaining to intra-orbital metallic foreign body (IMFB) safety practices. This phenomenological study describes the experiences of seven MRI technologists all with a minimum of 5 years' NZ work experience in MRI. The MRI technologists were interviewed face-to-face regarding their professional IMFB workplace experiences in order to explore historical, current and potential issues. Findings demonstrated that aspects of organization and administration are fundamentally important to MRI technologists. Varying levels of education and knowledge, as well as experience and skills gained, have significantly impacted on MRI technologists’ level of confidence and control in IMFB practices. Participants’ descriptions of their experiences in practice regarding decision-making capabilities further highlight the complexity of these themes. A model was developed to demonstrate the interrelated nature of the themes and the complexity of the situation in totality. Findings of this study have provided insight into the experiences of MRI technologists pertaining to IMFB safety practices and highlighted inconsistencies. It is hoped that these findings will contribute to and improve the level of understanding of MRI technologists and the practices and protocols involved in IMFB safety screening. The scarcity of available literature regarding IMFB safety practices highlights that more research is required to investigate additional aspects that could improve MRI technologists’ experiences.

  17. A study on the issues and improving directions of the rules related radiologic technologist in medical law

    International Nuclear Information System (INIS)

    Lim, Chang Seon

    1994-01-01

    According to the astonishing progress of medical science, the medical roles of the radiologic technologist are increasing gradually and specializing highly. However, there are the wide disagreements the actual roles of the radiologic technologists at clinics and the relating rules of the medical law. Therefore, it is required that the medical law should be corresponded with the actual state. To solve these problems. This study has proceeded to make the survey of the present medical law and has tried to offer the most suitable theories to the actual state. This study includes the survey of relevant professional literatures. The major contents of this study are as follows. First, medical technician is written (in Chinese character) at the present medical technician law, and that word is written wrong. So, it should be replaced with Therefore, radiologic technologist should be written Second, the relations between the doctor and the radiologic technologist should be written the 'request or other words' instead of 'direction' Third, in spite of the rules of the present medical law, the medical act of radiologic technologist at clinics should be belonging to the boundary of medical practice. Forth, to present the appropriate medical service to the patients, legal status of radiologic technologist as a member of medical team should be established. Fifth, it is desired that Magnetic Resonance Imaging Technology as a business of radiologic technologist should be provided for in the medical law

  18. Protection of the patient in nuclear medicine

    International Nuclear Information System (INIS)

    1987-01-01

    In ICRP Publication 52, the 'Protection of the Patient in Nuclear Medicine', is concerned with exposures of patients resulting from the administration of radiopharmaceuticals for diagnostic, therapeutic and research purposes. The report includes guidelines for nuclear medicine physicians, radiologists, medical physicists and technologists on the factors that influence absorbed doses to patients from different types of nuclear medicine examinations. Other topics in the report include education and training, estimates of absorbed dose, design of facilities, instrumentation, quality assurance and control and preparation, quality assurance and control of radiopharmaceuticals. (U.K.)

  19. Physics and radiobiology of nuclear medicine

    CERN Document Server

    Saha, Gopal B

    2010-01-01

    From a distinguished author comes this new edition for technologists, practitioners, residents, and students in radiology and nuclear medicine. Encompassing major topics in nuclear medicine from the basic physics of radioactive decay to instrumentation and radiobiology, it is an ideal review for Board and Registry examinations. The material is well organized and written with clarity. The book is supplemented with tables and illustrations throughout. It provides a quick reference book that is concise but comprehensive, and offers a complete discussion of topics for the nuclear medicine and radi

  20. Development of a cone-beam CT system for radiological technologist education

    International Nuclear Information System (INIS)

    Teramoto, Atsushi; Ohara, Ken; Ozaki, Kaho; Miyashita, Mariko; Ohno, Tomoyuki; Tsuzaka, Masatoshi; Fujita, Hiroshi

    2011-01-01

    For radiological technologists, it is very important to understand the principle of computed tomography (CT) and CT artifacts derived from mechanical and electrical failure. In this study, a CT system for educating radiological technologists was developed. The system consisted of a cone-beam CT scanner and educational software. The cone-beam CT scanner has a simple structure, using a micro-focus X-ray tube and an indirect-conversion flat panel detector. For the educational software, we developed various educational functions of image reconstruction and reconstruction parameters as well as CT artifacts. In the experiments, the capabilities of the system were evaluated using an acrylic phantom. We verified that the system produced the expected results. (author)

  1. Reliability of self-reported questionnaire on occupational radiation work of radiologic technologists in Korea

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Moon Jung [Graduate School of Public Health, Korea University, Seoul (Korea, Republic of); Cha, Eun Shil; Lee, Won Jin [Dept. of Preventive Medicine, Korea University College of Medicine, Seoul (Korea, Republic of)

    2016-04-15

    Self-completed questionnaires were used to obtain information on exposures and otherb factors necessary to evaluated disease risks. Although reliability of lifetime sun exposure of U.S. radiologic technologists and life-style factors, medical exams, and disease history of Korean nuclear power plants workers (2) were reported, few studies have evaluated the reliability of information obtained on radiation-related work in epidemiologic investigations. The aims of the study is to assess reliability of self-reported questionnaire for occupational radiation work in the radiologic technologists in Korea. Overall agreement and kappa regarding radiation work procedure, work practice, and work history were similar to those generally found for factors typically used in epidemiologic studies such as smoking (98% and 0.95) and alcohol consumption (88% and 0.67), and higher than physical activity (76% and 0.51).

  2. Reliability of self-reported questionnaire on occupational radiation work of radiologic technologists in Korea

    International Nuclear Information System (INIS)

    Kim, Moon Jung; Cha, Eun Shil; Lee, Won Jin

    2016-01-01

    Self-completed questionnaires were used to obtain information on exposures and otherb factors necessary to evaluated disease risks. Although reliability of lifetime sun exposure of U.S. radiologic technologists and life-style factors, medical exams, and disease history of Korean nuclear power plants workers (2) were reported, few studies have evaluated the reliability of information obtained on radiation-related work in epidemiologic investigations. The aims of the study is to assess reliability of self-reported questionnaire for occupational radiation work in the radiologic technologists in Korea. Overall agreement and kappa regarding radiation work procedure, work practice, and work history were similar to those generally found for factors typically used in epidemiologic studies such as smoking (98% and 0.95) and alcohol consumption (88% and 0.67), and higher than physical activity (76% and 0.51).

  3. Clinical features and applications of thallium-201. With reference to scintigraphy

    Energy Technology Data Exchange (ETDEWEB)

    Fujii, Tadashige

    1988-12-01

    Thallium-201 is not only used widely in myocardial imaging but also has a great potential in other various nuclear medicine imaging studies. This paper presents clinical features and applications of thallium-201, focusing on clinical trials with thallium-201 at the Shinshu University School of Medicine. Thallium-201 myocardial scintigraphy offers information on (1) ventricular position and morphology, (2) hypertrophy or dilatation of the left ventricle, (3) hypertrophy or dilatation of the right ventricle, (4) site and extent of myocardial ischemia and infarct, (5) myocardial blood flow, (6) pulmonary congestion or interstitial pulmonary edema, and (7) pericardial effusion. It can be used in the following evaluation or diagnosis: (1) acute or old myocardial infarction, (2) angina pectoris, (3) treatment strategy or prognosis of ischemic heart disease, (4) treatment strategy or observation of bypass graft or drug therapy, (5) hypertrophic or dilated idiopathic cardiomyopathy, (6) myocardial lesions induced by sarcoidosis, collagen disease, and neuro-muscular disease, (7) ventricular hypertrophy and pulmonary edema, and (9) pericarditis, pericardial effusion, and systolic pericarditis associated with underlying disease. The significance of tumor, liver, bone marrow scintigraphies is also referred to. (Namekawa, K) 69 refs.

  4. Thallium-201 scintigraphy in unstable angina pectoris

    International Nuclear Information System (INIS)

    Wackers, F.J.T.; Lie, K.I.; Liem, K.L.; Sokole, E.B.; Samson, G.; Van Der Schoot, J.B.; Durrer, D.

    1978-01-01

    Thallium-201 scintigraphy was performed during the pain free period in 98 patients with unstable angina. Scintiscans were positive in 39 patients, questionable in 27 patients and normal in 32 patients. Eighty-one patients responded favorably to treatment (group I). Seventeen patients had complicated courses (group II) and despite maximal treatment with propranolol either developed infarction (six patients) or continued to have angina necessitating coronary surgery (11 patients). In group I during the pain free period 26 of 81 patients had positive thallium-201 scans, whereas 20 patients had an abnormal ECG at that time; during angina 18 patients had transient ECG changes. In group II during the pain free period 13 of 17 patients had positive scans, whereas two patients had abnormal ECG at that time; during angina 12 patients showed transient ECG changes. The sensitivity to recognize group II was 76% for thallium-201 scintigraphy, 11% for ECG during the pain free period; 70% for ECG during angina; 94% for the combination of either positive scans or abnormal ECG. Thus, positive thallium-201 scans occur in patients with unstable angina, positive scans can be obtained during the pain free period, thallium-201 scans are more frequently positive in patients with complicated course

  5. Indium-111 platelet scintigraphy in carotid disease

    International Nuclear Information System (INIS)

    Branchereau, A.; Bernard, P.J.; Ciosi, G.; Bazan, M.; de Laforte, C.; Elias, A.; Bouvier, J.L.

    1988-01-01

    Forty-five patients (35 men, 10 women) undergoing carotid surgery had Indium-111 platelet scintigraphy as part of their preoperative work-up. Imaging was performed within three hours after injection of the Indium-111. A second series of views was obtained 24 hours later and repeated at 24 hour intervals for two days. Of 54 scintigrams, 22 were positive and 32 negative. Positive results were defined as a twofold or more increase in local activity on a visualized carotid after 24 hours. The sensitivity of the method was 41%, intraoperatively, and the specificity, 100%. The low sensitivity places this method behind sonography and duplex-scanning for screening patients for surgery. We believe that indications for platelet scintigraphy are limited to: 1. Repeated transient ischemic attacks in the same territory with minimal lesions on arteriography and non-homogeneous plaque on duplex scan; 2. Symptomatic patients being treated medically as a possible argument for surgery; 3. Determining therapeutic policy for patients having experienced a transient ischemic attack with a coexisting intracardiac thrombus

  6. Skeletal MR imaging: Correlation with skeletal scintigraphy

    International Nuclear Information System (INIS)

    Colletti, P.M.; Raval, J.K.; Ford, P.V.; Benson, R.C.; Kerr, R.M.; Boswell, W.D.; Siegel, M.E.; Ralls, P.W.

    1987-01-01

    Skeletal MR images bone marrow while skeletal scintigraphy uses bone metabolism to demonstrate abnormalities. The purpose of this paper is to correlate these MR and scintigraphic findings. T1 and T2 MR images at 0.5 T were correlated with planar bone scintigraphy (RN) using Tc-99m MDP in 56 patients. Of 23 cases with suspected spinal metastases, 19 were positive by MR imaging, 16 by RN. Individual lesions were shown better by MR imaging in five and by RN in two. These two cases had scoliosis, a potential difficulty with MR imaging. In 14 cases of suspected avascular necrosis (AVN), MR imaging was positive in 13 while RN was positive in ten. One negative case by RN had bilateral AVN by MR imaging. Four skull lesions shown easily by RN were seen only in retrospect on MR images. MR imaging is advantageous in evaluating bones with predominant marrow such as vertebrae or the femoral head, while RN is superior in areas primarily composed of cortical bone such as the skull

  7. Dynamic renal scintigraphy in aortic disorders

    International Nuclear Information System (INIS)

    Terae, Satoshi; Itoh, Kazuo; Tsukamoto, Eriko; Nakada, Kunihiro; Fujimori, Kenji; Hashimoto, Masato; Tanabe, Tatsuzo; Furudate, Masayori; Irie, Goro

    1986-01-01

    Dynamic renal scintigraphy has been reviewed for evaluation of renal arterial involvement in aortic disorders such as arteriosclerosis obliterans, abdominal aortic aneurysm and dissecting aneurysm. As a diagnostic finding and parameters, we used blood perfusion images of both kidneys and relative split renal function index obtained with analysis of the time-activity curves which were generated using a renal region of interest. In the diagnosis of unilateral renal arterial involvement, sensitivity and specificity of blood perfusion images were 100 % (9/9) and 77 % (10/13) and those of relative split renal function index were 78 % (7/9) and 92 % (12/13), respectively. Dynamic renal scintigraphy was useful for evaluating unilateral renal arterial involvement in aortic diseases. However, scintigraphic diagnosis of bilateral renal arterial involvement were difficult. And in a severe case, we could not differentiate renal parenchymal damage due to renovascular involvement from senile renal dysfunction or hypertensive renal disease which is often a cause of aortic disorders. (author)

  8. [In vivo mutagenicity and clastogenicity of ionizing radiation in nuclear medicine

    International Nuclear Information System (INIS)

    1989-01-01

    The overall goals of our research remains to investigate the mutagenic and clastogenic effects of exposure to low levels of ionizing radiation in human lymphocytes. We are studying hospital patients referred to a nuclear medicine department for diagnostic cardiac imaging and nuclear medicine technologists who administer radionuclides

  9. Impact on Quality When Pediatric Urgent Care Centers Are Staffed With Radiology Technologists.

    Science.gov (United States)

    Kan, J Herman; Orth, Robert C; Yen, Terry A; Schallert, Erica K; Zhang, Wei; Donnelly, Lane F

    2018-02-02

    The proliferation of pediatric urgent care centers has increased the need for diagnostic imaging support, but the impact of employing radiology technologists at these centers is not known. The purpose of this study was to evaluate radiographic impact and quality at urgent care centers with and without radiology technologists. A retrospective case-control study was conducted comparing 235 radiographic examinations (study) performed without and 83 examinations (control) performed with a radiology technologist at the authors' pediatric urgent care centers. Studies were evaluated for quality using a five-point, Likert-type scale (1 = poor, 5 = best) regarding field of view, presentation, and orthogonal view orientation. Studies were also evaluated for the incidence of positive results, need for repeat imaging, and discrepancies between initial study and follow-up. Imaging quality comparisons between study and control groups were statistically different for field of view (3.98 versus 4.29, P = .014), presentation (4.39 versus 4.51, P = .045), and orthogonal view orientation (4.45 versus 4.69, P = .033). The incidence of repeat imaging was similar (4.7% versus 2.4%, P = 0.526), as well as the discrepancy rates (3.4 versus 2.4%, P = 1.00). The incidence of abnormal radiographic findings for the study and control groups was similar (40.9% versus 34.9%, P = .363). Radiography is an important triage tool at pediatric urgent care centers. It is imperative to have optimal radiographic imaging for accurate diagnosis, and imaging quality is improved when radiology technologists are available. If not feasible or cost prohibitive, it is important that physicians be given training opportunities to bridge the quality gap when using radiographic equipment and exposing children to radiation. Copyright © 2018 American College of Radiology. Published by Elsevier Inc. All rights reserved.

  10. The actual research of radioprotective education on the educational facilities for radiological technologists

    International Nuclear Information System (INIS)

    Miura, Tadashi; Koga, Sukehiko.

    1997-01-01

    The aim of this study was to grasp the actual conditions of the radioprotective education in the educational facilities for radiological technologists, and to discuss the ideal way of radioprotective education toward the 21st century. For this purpose, we sent out the questionnaire concerning the circumstances of radioprotective education to 38 educational facilities for radiological technologists in Japan, including 6 universities, 15 junior colleges and 15 technical schools. This research was carried out on March, 1997, and the answers were obtained total 34 educational facilities (86.8%) (6 universities, 15 junior colleges and 13 technical schools) in total. Among the educational facilities in Japan, universities were much richer than the other two facilities in every respect on the educational circumstances including number and the quality of teaching staffs, educational institutions and equipment, practical training facilities and equipment, the number of collection of books in the library, etc. In the process of education for radiological technologists, the background to cause problems concerning the radioprotective education was largely dependent on the difference of educational schemes in Japan. From the view point of the elevation of educational standard for radiological technologists, it is better to transfer all educational processes to the universities, and give high and full level of radioprotective education in universities. And in the field of the medical radiology, the radioprotection and the management system should also be strengthened. For this purpose, it is also required to revise the related laws drastically, to strengthen lessons related to the radioprotection and to plan the richness in contents of the radioprotective education. (K.H.)

  11. Standing at the crossroads: Identity and recognition of the Applied Science Technologist in British Columbia

    Science.gov (United States)

    Roemer, Thomas

    Modern technical education in British Columbia has been affected by two societal trends: in industry, engineering technology evolved as a discipline to bridge the increasing chasm between the process-oriented skill sets of tradespersons/technicians, and the declarative knowledge focus of engineering; in education, the provincial college and institute system was created to address the need for a new post-secondary credential situated between trades certificates and university degrees. The Applied Science Technologist arguably forms the intersection of these two concepts. Almost forty years after its inception, it is timely to ask if the original model has matured into a distinct occupational category in industry, education, and in the public mind. The thesis proposes three environments, the Formative, Market and Public Domain, respectively. Interviews, surveys and personal experience afforded insights into the dynamics of these domains with respect to a fledgling occupational category, while the socio-philosophical concepts of culture, habitus and social imaginary provide the tools to interpret the findings. The thesis postulates that an emerging occupational category will not only challenge existing cultures and habitus, but that over time it will influence the imaginaries of each domain and society as a whole. Ultimately, the occupational category will be truly successful only when the general public is able to distinguish it from related disciplines. Charles Taylor's writings on multiculturalism are used to discuss identity and recognition of the Applied Science Technologist in each domain while Pierre Bourdieu's perspectives on the existence of habitus and self-proliferating elites form the framework to examine the relationships between technologists and engineers. Taylor's theory of multiple concurrent social imaginaries guides the comparison of divergent expectations among academic, career and vocational instructors at British Columbia's colleges. The thesis

  12. Training program for radiologic technologists for performing chest X-rays at inspiration in uncooperative children

    International Nuclear Information System (INIS)

    Langen, Heinz Jakob; Muras, S.; Kohlhauser-Vollmuth, C.; Stenzel, M.; Beer, M.

    2009-01-01

    A computer program was created to train technologists to perform chest X-rays in crying infants at maximum inspiration. Videos of 4 children were used. Using a computer program, the moment of deepest inspiration was determined in the video in the single frame view. During the normal running video, 14 technologists (3 with significant experience, 3 with little experience and 8 with very little experience in pediatric radiography) simulated a chest radiograph by pushing a button. The computer program stopped the video and the period of time to the optimal moment for a chest x-ray was calculated. Every technologist simulated 10 chest X-rays in each of the 4 video clips. The technologists then trained themselves to perform chest X-rays at optimal inspiration like playing a computer game. After training, the test was repeated. Changes were evaluated by t-test for unpaired samples (level of significance p < 0.05). Although the differences improved in all children, minimal deviation from the optimal moment for taking an X-ray at inspiration occurred in the periodically crying child (0.21 sec before and 0.13 sec after training). In a non-periodically crying infant, the largest differences were shown. The values improved significantly from 0.29 sec to 0.22 sec. The group with substantial experience in pediatric radiology improved significantly from 0.22 sec to 0.15 sec. The group with very little experience in pediatric radiology showed worse results (improvement from 0.29 sec to 0.21 sec). (orig.)

  13. Determination of the vitality of the femoral head with sup(99m)Tc-Sn-pyrophosphate scintigraphy

    International Nuclear Information System (INIS)

    Greiff, J.

    1980-01-01

    A series of 14 patients who for various reasons were scheduled for total hip replacement were investigated. sup(99m)Tc-Sn-pyrophosphate scintigraphy and tetracycline labelling of the bone structure was performed prior to surgery, and subsequently the femoral heads were submitted to histological evaluation on decalcified as well as non-decalcified slides. The evaluation of the scintigraphs was performed by a specialist in nuclear medicine and the histological slides were evaluated by a pathologist, in the both cases without the radiological findings or the clinical history. The scintigraphic evaluations of the vitality of the femoral head were in all cases verified by the histological examination, whereas the radiological findings in three cases failed to demonstrate that a femoral head necrosis actually was present. From this study it can be concluded that sup(99m)Tc-Sn-pyrophosphate scintigraphy is an excellent method of assessing bone vitality in the femoral head. (author)

  14. Public competitive examination for radiology technologist: knowledge in radiation protection required in Brazil

    International Nuclear Information System (INIS)

    Oliveira, J.S.; Silva, K.R.; Gomes, A.S.

    2017-01-01

    Ionizing radiations are used in areas such as health, industry and safety, not only in the private sector, but also in the public. Thus, it is necessary the radiological protection, a set of studies and practices that increases the safety in these applications, where the professional involved is the technologist in radiology. The objective was to analyze the contents effectively required by the Brazilian public agencies in their competitions for radiology technologist, regarding the area of radiological protection, identifying their profile of requirement. It consisted of three stages: first, a survey of all the public competitions already carried out in the country up to the end of 2016, that requested a diploma of graduation in Technology in Radiology; second, all the specific questions were collected and grouped in an electronic text file; third, issues involving radiological protection were segregated, using as reference the 2017 edition of the National Nuclear Energy Commission's General Proof of Radioprotection Supervision. The results showed that almost 40% of the competition questions were about radiation protection. From this sampling, the topics most covered were: radiological safety (36%), fundamentals of atomic and nuclear physics (24%) and biological effects of radiation (16%). It is concluded that the competitions for radiologist technologist have the profile of concentration of exigency in radiological safety, fundamentals of atomic and nuclear physics and biological effects of the radiations

  15. Computed tomography of hepatocellular carcinoma. Comparison with scintigraphy and ultrasonography

    Energy Technology Data Exchange (ETDEWEB)

    Kaneko, Kuniyuki; Nakata, Hajime; Honda, Hiroshi [University of Occupational and Environmental Health, Kitakyushu, Fukuoka (Japan)

    1983-09-01

    The detectability of hepatocellular carcinoma by computed tomography (CT) was evaluated on 76 cases. The detectability by plain CT was 93% with only slight improvement following a drip infusion of contrast medium. A comparison of scintigraphy, ultrasonography, and CT was also done on 63 cases. From the standpoint of the overall detectability of the tumor, CT was as good as ultrasonography or scintigraphy. Several cases were positive only on either CT or ultrasonography but no case was positive on scintigraphy alone. We believe that the combination of CT and ultrasonography is the most reliable as the screening method.

  16. Gallium-67 and subphrenic abscesses: is delayed scintigraphy necessary

    International Nuclear Information System (INIS)

    Hopkins, G.B.; Mende, C.W.

    1975-01-01

    Forty postoperative patients with clinical and roentgenographic findings suggestive of subphrenic abscess were evaluated by early and delayed 67 Ga scintigraphy. Early 67 Ga scintigraphs obtained 6 hr after injection correctly localized seven right and five left subphrenic abscesses. In no instance was an abscess present on delayed scintigraphs that was not evident on the 6-hr study. Two patients with left subphrenic abscess had false-negative results on both early and delayed scintigraphy. No false-positive studies were recorded. Early 67 Ga scintigraphy can be a valuable noninvasive adjunct in the diagnosis of subphrenic abscess. (U.S.)

  17. Twenty cases of ectopic thyroid gland detected by thyroid scintigraphy

    International Nuclear Information System (INIS)

    Hashimoto, Teisuke; Kubo, Atsushi; Hashimoto, Shozo

    1988-01-01

    20 cases of ectopic thyroid gland were detected out of 5,261 thyroid scintigraphy from 1973. Except for 1 case, all cases were female. Considering of thyroid function, 11 cases were euthyroid and rest of 9 cases were hypothyroid function. Clinical symptom of hypothyroid cases were mainly retarded linear growth and high value of serum TSH and in case of euthyroid cases were sublingual tumor and fullness or tightness in throat. Thyroid scintigraphy is very useful to diagnose the sublingual tumor whether it is ectopic thyroid gland or not. In case of congenital hypothyroidism children, ectopic thyroid gland causing hypothyroidism is definitely diagnosed by thyroid scintigraphy. (author)

  18. Our experience on the diagnostic possibilities of pancreas scintigraphy

    International Nuclear Information System (INIS)

    Centi Colella, A.; Pistoni, F.

    1975-01-01

    Several years experience on the real diagnostic possibilities of a pancreas scintigraphy method are reported, with special reference to the differentiation between malignant neoplasias and chronic pancreatitis. In this respect, account is taken of certain eminently functional parameters which can be determined by traditional scintigraphy and by sequential static scintigraphy with the Anger gamma camera. The parameters in question are: degree of definition of the pancreas image; amount of 75 Se-labelled selenomethionine uptake by the stomach and the jejunum; time of appearance of the pancreatic radioactivity [fr

  19. Our experience on the diagnostic possibilities of pancreas scintigraphy

    Energy Technology Data Exchange (ETDEWEB)

    Centi Colella, A; Pistoni, F [Rome Univ. (Italy)

    1975-01-01

    Several years experience on the real diagnostic possibilities of a pancreas scintigraphy method are reported, with special reference to the differentiation between malignant neoplasias and chronic pancreatitis. In this respect, account is taken of certain eminently functional parameters which can be determined by traditional scintigraphy and by sequential static scintigraphy with the Anger gamma camera. The parameters in question are: degree of definition of the pancreas image; amount of /sup 75/Se-labelled selenomethionine uptake by the stomach and the jejunum; time of appearance of the pancreatic radioactivity.

  20. Scintigraphy of the heart using sup(99m)Tc diphosphonate in combination with selective coronary perfusion scintigraphy and coronaroangiography

    International Nuclear Information System (INIS)

    Neumann, G.; Trenckmann, H.; Duck, H.J.; Katzschmann, R.; Neugebauerova, A.; Schneider, G.; Gottschild, D.

    1980-01-01

    In 45 patients with ischemic heart disease the results obtained by myocardial scintigraphy using technetium-99m diphosphonate (Tc-99m-DP) were compared with those obtained at selective coronary angiography and selective coronary perfusion scintigraphy. The cumulation of activity in the heart muscle was seen in twelve patients. This group is analyzed in the present paper in more detail. The ventriculographic examination of the left ventricle showed disturbed motility of the wall in six patients, of whom five had a positive myocardial scintigram. In view of this, myocardial scintigraphy using Tc-99m-DP may be considered a complementary, non-invasive method for proving significant disturbances of the motility of the heart wall. Positive myocardial scintigrams were also found in angna pectoris, in a patient after aorto-coronary bypass, in cardiomyopathy and myocarditis. In view of the fact that myocardial scintigraphy using Tc-99m-DP is capable of proving disturbances of cells of the heart muscle taking place at the moment, conclusions can be drawn as to the activity in the heart muscle. It further follows that myocardial scintigraphy may be significant in indicating the aorto-coronary bypass. We failed to prove an unequivocal correlation between myocardial scintigraphy, the number of sclerotically changed coronary vessels and the degree of their narrowing. An immediate relationship could not be proved between the extent of perfusion disturbance and the results of myocardial scintigraphy

  1. Renal scintigraphy following angiotensin-converting enzyme inhibition in the diagnosis of renovascular hypertension (captopril scintigraphy)

    International Nuclear Information System (INIS)

    Sfakianakis, G.N.; Sfakianakis, E.; Bourgoignie, J.

    1988-01-01

    There is definitely a niche for an accurate test for the diagnosis of RVH; more important, there is a need for a predictive test to help select patients suitable for revascularization procedures as opposed to medical treatment. All current tests have less than optimal results. Captopril scintigraphy warrants evaluation. It is important, however, to approach the test with a full understanding of its theoretical potentials on the basis of current clinical experience. Several options, techniques, and combinations are possible, given the availability of more than one radiopharmaceutical. The purpose of this chapter is to: (a) briefly review RVH and its pathophysiology, with emphasis on the need to establish the diagnosis, lateralize the abnormality, and decide about the mode of treatment; (b) review the current knowledge about converting-enzyme inhibitors; (c) analyze the handling of the different radiopharmaceuticals by the RVH-related kidney with and without pharmacologic intervention; and (d) compare and critically examine proposed protocols for captopril scintigraphy

  2. The Job Consciousness for Radiological Technologists in Korea, Canada, and Australia

    Energy Technology Data Exchange (ETDEWEB)

    Han, Eun Ok; Kwon, Deok Mun; Park, Kwang Hun; Choi, Seung Yoon; Jung, Chung Hyun [Dept. of Radiologic Technology, Daegu Health College, Daegu (Korea, Republic of); Bae, Sang Il [Dept. of Radiation Oncology, Korea Cancer Center Hospital, Seoul (Korea, Republic of); Oh, Chang Woo [Dept. of Radiation Oncology, Severance Hospital Cancer Center, Seoul (Korea, Republic of)

    2009-06-15

    This study attempts to provide basic information on overseas employment to the radiological technologists and students majoring in radiology in Korea who consider the overseas employment by investigating the job consciousness for radiological technologists in Canada and Australia which have a high level of interest for overseas employment and want to compare their status with that of Korean radiological technologists. This study was performed by visiting hospitals such as Prince George Regional Hospital, 1475 Edmonton Street, Prince George, BC, Canada on August 13, 2007, Alfred Hospital, Commercial Road Melbourne 3004, Australia on August 4, 2008, and other Korea hospitals that show the similar scale as Canada and Australia on September 10, 2007. The results were summarized as follows : 1. Differences were observed in this sexual composition, such as 18 males (90%) in Korea, 14 females (73.7%) in Canada, and 25 females in Australia (86.2%). 2. The item of 'aptitude' which is one of the most important criteria, showed the highest level in Korea, Canada, and Australia, and the second most considered item was 'salary'. 3. In the values in jobs, the items of 'economic self-sufficiency', 'recognized by others', and 'establishing a social position' represented high levels in Korea, and the items of 'like the job itself', 'establishing self-actualization', 'feel the meaning of life', and 'make new friends' showed high levels in Canada and Australia. 4. Regarding the item of 'a job is important as much as a marriage', 'Yes' showed high level in Korea, and 'No' showed high levels in Canada and Australia. 5. Radiological technologists in Korea demonstrated a low level in the job consciousness compared to those of Canada and Australia. Although this study shows some limitations for showing whole idea of radiological technologists due to the lack of the scope

  3. Pulmonary scintigraphy using 197HgCl2 and pulmonary perfusion scintigraphy in bronchopulmonary diseases

    International Nuclear Information System (INIS)

    Fujii, Tadashige; Kanai, Hisakata; Handa, Kenjiro; Kusama, Shozo

    1981-01-01

    75 patients with pulmonary tuberculosis and 106 patients with bronchopulmonary diseases whose chest x-rays showed diffuse shadows were studied. Pulmonary scintigraphy using 197 HgCl 2 was useful for the diagnosis of the localization and the activity of pulmonary tuberculosis, because 197 HgCl 2 readily accumulated in the foci, and its accumulation rate was related to the activity of the foci. 197 HgCl 2 also accumulated markedly in foci of pneumoconiosis, especially, in areas showing large shadows and foci suspected to be tuberculosis. 197 HgCl 2 also accumulated in areas of chronic bronchitis, diffuse interstitial pneumonia and bronchiectasis. Its accumulation was considered to have a relation to the activity of inflammation. In primary pulmonary carcinoma, 197 HgCl 2 accumulated most markedly, in the primary lesions. 197 HgCl 2 also accumulated in metastatic or invasion areas of the hilus and the mediastinum. It accumulated in intrapulmonary metastatic foci of pulmonary carcinoma and multiple metastatic pulmonary tumors, but it was difficult to differentiate these diseases from other pulmonary diseases. In selected cases, it was useful to use pulmonary scintigraphy using 197 HgCl 2 together with pulmonary perfusion scintigraphy for the diagnosis of diffuse bronchopulmonary diseases. (Tsunoda, M.)

  4. Optimizing renal DMSA-scintigraphy with 7-pinhole collimator

    International Nuclear Information System (INIS)

    Botsch, H.; Pottmeyer, A.; Savaser, A.; Lochner, B.; Felix, R.

    1982-01-01

    Multiple pinhole emission tomographic imaging techniques are currently being applied to imaging of organs of a limited size. The purpose of this study was to evaluate the feasibility of this technique in kidney imaging with Tcsup(99m)-DMSA. A 7-pinhole collimator having 4.5 mm. pinhole apertures was used in conjunction with a widefield camera. Left and right kidney were imaged separately. Twelve small renal cysts with a diameter of 1 to 3.5 cm. verified by US or CAT were investigated by 7-pinhole and planar scintigraphy. Eight of 12 renal cysts were identified by 7-pinhole scintigraphy whereas only one cyst was seen by planar scintigraphy. The borderline of cysts detection was 1.5 cm. in 7-pinhole tomography. Basing on these comparative studies and experiences on many patient investigations it seems reasonable to perform renal scintigraphy with 7-pinhole tomography in a routine manner. (orig.)

  5. The independent value of exercise thallium scintigraphy to physicians

    International Nuclear Information System (INIS)

    Hlatky, M.; Botvinick, E.; Brundage, B.

    1982-01-01

    To determine the effect of exercise myocardial scintigraphy with 201 Tl on diagnostic accuracy and the need for coronary angiography, consecutive patients with a variety of clinical presentations were identified. Clinical summaries, including a detailed history, physical examination, and complete data from a standard treadmill exercise test, were presented to 91 cardiologists. The cardiologists assessed the probability of coronary disease and the need for coronary angiography. They were then presented the results of thallium scintigraphy and revised their assessments if warranted. Scintigraphy significantly increased the cardiologists' diagnostic accuracy beyond that attained with other clinical information (p less than 0.0001). The change in accuracy varied from + 4% to + 20% in different patient groups, and was greatest in patients with atypical angina and a positive exercise ECG. Ratings of the need for coronary angiography changed from -13% to +21% in different patient groups. We conclude that exercise thallium scintigraphy can provide independent diagnostic information and influence the need for coronary angiography

  6. Lung inhalation scintigraphy with radioactive aerosols in several pulmonary diseases

    International Nuclear Information System (INIS)

    Martins, L.R.; Marioni Filho, H.; Romaldini, H.; Uehara, C.; Alonso, G.

    1983-01-01

    The pulmonary ventilation scintigraphy with 99m Tc diethylene-triamine-pentaacetate (99mTc-DTPA) delivered through a new nebulizer system when analyzed together with the classic lung perfusion scintigraphy with 99mTc-labeled albumin macroaggregates (99mTcMAA) is a very important diagnostic tool in several pulmonary diseases. Several aspects of the lung ventilation-perfusion scintigraphy are studied in 15 people with no lung disease, smokers and nonsmokers. The findings with the lung ventilation-perfusion scintigraphy are also discussed in 34 patients with several pulmonary diseases: lung cancer, chronic obstructive lung disease, policystic pulmonary disease, and pulmonary embolims. The authors concluded that the procedure is a valuable diagnostic tool in several pulmonary diseases, especially because good lung images are obtained, no side effects were detected, the technique is ease and low cost, and it brings new informations, not available with other diagnostic methods. (author)

  7. Thallium-technetium-subtraction scintigraphy in secondary hyperparathyroidism

    International Nuclear Information System (INIS)

    Adalet, I.; Hawkins, T.; Clark, F.; Wilkinson, R.

    1994-01-01

    Between 1983 and 1992 thallium-technetium subtraction scintigraphy (TTS) was performed on 74 patients with clinical and biochemical evidence of hyperparathyroidism. Twenty-five of the 53 investigations since 1988 were conducted on patients with renal failure with a suspicion of secondary hyperparathyroidism. In a retrospective study we have evaluated radioisotope scintigraphy for patients with adenoma and for renal failure patients with possible parathyroid hyperplasia. Thirty of 74 patients underwent neck exploration. Scintigraphy detected 17 of 24 parathyroid adenomas (sensitivity 71%). In contrast, in six renal patients who came to operation, scintigraphy localised only 5 of 20 hyperplastic parathyroid glands (sensitivity 25%) and in one renal patient we localised a parathyroid adenoma. A review of the literature shows low detection rates for hyperplasia by TTS to be a common observation. Based on these findings a rational approach is offered for parathyroid localisation in renal patients prior to neck exploration. (orig.)

  8. Value of transoperative scintigraphy in the detection of accessory spleens

    International Nuclear Information System (INIS)

    Sezeur, A.; Goujard, F.; Labriolle-Vaylet, C.L. de; Wioland, M.; Douay, L.; Desmarquet, J.

    1990-01-01

    A case of accessory spleen, 1 cm in diameter, responsible for recurrence of an idiopathic thrombocytopenic purpura after splenectomy is reported. This case is original in that the accessory spleen could only be detected by transoperative scintigraphy. Transoperative scintigraphy is a simple method to be used when one or several unrecognized accessory spleens are responsible for recurrence of a blood disease after excision of the principal spleen [fr

  9. The thallium-201 myocardial scintigraphy, its possibilities and limitations

    International Nuclear Information System (INIS)

    Adam, W.; Meindl, S.; Schmitz, A.; Utech, C.; Boettcher, D.

    1983-01-01

    The Thallium-201 Myocardial Scintigraphy, its Possibilities and limitations: The Thallium-201 myocardial scintigraphy is a simple non-invasive procedure to detect hypo- and non-perfused myocardial regions. In the he last years it was demonstrated to be a helpful method in the diagnostic strategy for the cardiologist. It can not replace the coronary angiogram, but in many cases it appears to be useful in selecting patients for coronary angiography. (orig.) [de

  10. Various factors affecting /sup 67/Ga scintigraphy of liver cancer

    Energy Technology Data Exchange (ETDEWEB)

    Motoki, T; Morinari, H; Oono, K [Tokyo Univ. (Japan). Faculty of Medicine

    1980-10-01

    Various factors affecting /sup 67/Ga accumulation in liver cancer were studied in 38 patients with liver cancer (19 with hepatocellular carcinoma and 19 with metastatic liver cancer) who had received /sup 67/Ga-scintigraphy and liver scintigraphy. Besides histological types, the size, necrosis, vascularity and treatments of liver cancer, concentrations of transferrin (/sup 67/Ga binding protein) and iron in blood probably affected /sup 67/Ga accumulation in liver cancer.

  11. 131I-19-iodocholesterol scintigraphy and suprarenal pathology

    International Nuclear Information System (INIS)

    Leger, F.A.; Baulieu, J.L.; Plouin, P.F.

    The methods used and results obtained by 131 I-19-iodocholesterol scintigraphy (dose 2mCi) are given for 24 patients with various kinds of suprarenal hyperactivity (primary hyperaldosteronism, Cushing's syndrome, malignant adrenocortical tumour, pheochromocytoma). The morphological and quantitative aspects of suprarenal scintigraphy are examined. A technique to determine the iodocholesterol uptake ratio of the two adrenal glands, considered more important than the fixation rate of each is described [fr

  12. Static and dynamic scintigraphy in radioisotope cardiology diagnostics

    International Nuclear Information System (INIS)

    Waligorski, M.; Zolna, J.; Strzelecki, A.; Pasyk, S.

    1981-01-01

    A review of the applications of scintigraphy in cardiac diagnosis is given. The principle of operation of the gamma-camera and of the scintigraphic system, the handling of data and the so-called gated scintigraphy are discussed. Characteristics of some radioisotopes applied in nuclear cardiology are given. The most frequent clinical states are discussed in which isotope diagnostics may be useful. Attention is drawn to the advantages of nuclear cardiology methods over conventional diagnostics. (author)

  13. Dynamic gamma camera scintigraphy in primary hypoovarism

    International Nuclear Information System (INIS)

    Peshev, N.; Mladenov, B.; Topalov, I.; Tsanev, Ts.

    1988-01-01

    Twenty-seven patients with primary hypoovarism and 10 controls were examined. After intravenous injection of 111 to 175 MBq 99m Tc pertechnetate, dynamic gamma camera scintigraphy for 15 minutes was carried out. In the patients with primary amenorrhea no functioning ovarial tissue was visualized or the ovaries were diminished in size, strongly reduced and non-homogenous accumulation of the radionuclide with unclear and uneven delineation were observed. In the patients with primary infertility, the gamma camera investigation gave information not only about the presence of ovarial parenchyma, but about the extent of the inflammatory process, too. In the patients after surgical intervention, the dynamic radioisotope investigation gave information about the volume and the site of the surgical intervention, as well as about the conditions of the residual parenchyma

  14. Localization of ectopic gastric mucosa by scintigraphy

    International Nuclear Information System (INIS)

    D'Alonzo, W.A. Jr.

    1988-01-01

    When gastric mucosal tissue occurs outside of the confines of the stomach, it is termed ectopic or heterotopic. Ectopic gastric mucosa may be found within Meckel's diverticulum, duplications of the alimentary tract, and Barrett's esophagus. In addition, a surgeon may inadvertently leave behind antral gastric mucosa while performing a partial gastrectomy for peptic ulcer disease (i.e., retained gastric antrum). It is important to detect the presence and location of ectopic mucosa because acid and pepsin secretion may cause ulceration in the adjacent tissue resulting in serious complications. The only currently available specific diagnostic technique for detecting ectopic gastric mucosa is pertechnetate Tc 99m (TcO 4- ) scintigraphy. This chapter reviews the functional anatomy of gastric mucosa, the mechanism of TcO 4 - localization, the various entities containing ectopic gastric mucosa, and the methods and results of TcO 4 - scanning for these disorders

  15. Quantitative analysis of thallium-201 myocardial scintigraphy

    International Nuclear Information System (INIS)

    Kanemoto, Nariaki; Hoer, G.; Johost, S.; Maul, F.-D.; Standke, R.

    1981-01-01

    The method of quantitative analysis of thallium-201 myocardial scintigraphy using computer assisted technique was described. Calculated indices are washout factor, vitality index and redistribution factor. Washout factor is the ratio of counts at certain period of time after exercise and immediately after exercise. This value is neccessary for the evaluation of redistribution to the ischemic areas in serial imagings to correct the Tl-201 washout from the myocardium under the assumption that the washout is constant in the whole myocardium. Vitality index is the ratio between the Tl-201 uptake in the region of interest and that of the maximum. Redistribution factor is the ratio of the redistribution in the region of interest in serial imagings after exercise to that of immediately after exercise. Four examples of exercise Tl-201 myocardial scintigrams and the quantitative analyses before and after the percutaneous transluminal coronary angioplasty were presented. (author)

  16. Diuretic Scintigraphy of kidneys using lazex

    International Nuclear Information System (INIS)

    Yudin, L.; Reznichenko, A.; Uskov, I.; Budkevich, Yu.; Shejretova, E.; Sultanov, S.

    1993-01-01

    Diuretic scintigraphy performed in 59 patients with hydronephrosis, nephrolithiasis, chronic pyelonephritis and ureteral hydronephrosis, discloses 99m Tc-DTPA retention in the urinary tract - prolongation and absence of excretory segment on the nephrogram to appearance of an obstructive type curve. As shown by the data from 19 operatively verified patients with hydronephrosis and nephrolithiasis diagnosed as stenosis of the pelviureteral segment, a high sensitivity and accuracy of stenosis demonstration is recorded in the absence of excretory segment in the initial nephrogram regardless of whether or not it appears later, after Lazex administration. Stenosis of the pelviureteral segment may be likewise observed in the presence of excretory segment in the initial nephrogram with a prolonged half-period of excretion. A two-fold shortening of the latter is documented in the diuretic nephrogram. 12 refs., 3 figs. (orig.)

  17. Diagnosis by Liver Scintigraphy; Gepatoskennograficheskaya semiotika

    Energy Technology Data Exchange (ETDEWEB)

    Zubovskij, G. [Nauchno-Issledovatel Skij Rentgeno-Radiologicheskij Institut M3 RSfSR, Moskva, SSSR (Russian Federation)

    1969-05-15

    Liver scintigraphy has become one of the most important methods of diagnosing liver diseases, being used most often to discover the locus of infection. A total of 2000 patients were thus investigated and in 1200 cases the state of the liver was definitively established; for 335 of these the condition was determined by inspection during surgical operation; in 180 cases it was established on the basis of a puncture biopsy, in 55 cases by autopsy and in the remainder by clinical laboratory tests and long-term observation. 102 patients were subjected to both scintigraphy and contrast X-ray investigation of the liver. 500 conditions were ascribed to localized liver infections (fibroses, cysts and tumours) and the remaining 700 to diffuse infections (cirrhosis, hepatitis, systemic blood diseases, etc. ). On the basis of analysis of scintigrams from 1200 patients with definitively established liver conditions criteria were drawn up for use in diagnosis by liver scintigraphy, on the lines of those employed in the practice of X-ray diagnosis. These criteria include changes in the topography, shape and dimensions of the liver, the comparative degrees of contrast in the images obtained and also the appearance of the spleen and the gall bladder. It was found that depending on the type of pathological process and its distribution there occur highly characteristic indications of a change in the liver scintigram, and by evaluation of these the localization and nature of the process can be more accurately determined. The changes observed in a liver scintigram in cases of disease of the surrounding organs, such as the lungs, diaphragm, pancreas and certain others, were also determined. On the basis of detailed analysis of 88 scintigrams from patients showing no signs of liver infection, the author evolved the concept of a normal scintigraphic representation of the liver, dependent on the constitutional characteristics of the individual. A thorough knowledge of the underlying

  18. Myocardial perfusion scintigraphy - possibilities of diagnosing CAD

    International Nuclear Information System (INIS)

    Tsonevska, A.

    1998-01-01

    A reviewing the diagnostic methods used in the intricate process of evaluating CAD patients in a attempt to establish the role played by radionuclide methods in the diagnostic strategy is done. The perfusion cardiotropic radiopharmaceuticals used and the various methods of evaluating myocardial are discussed. Although 210 Tl-chloride is the most widely used myocardial perfusion agent, recently 99m Tc-MIBI is proposed as an alternative because of its advantages. Myocardial perfusion assessment is done by various techniques depending on the specific aim, each of them having its proper advantages and shortcomings. The inference is reached that regardless of the routine practical implementation of myocardial perfusion scintigraphy and comprehensive studies along this line in course, there are problems still not well enough clarified awaiting solution

  19. Atlas of Bone Scintigraphy in the Developing Paediatric Skeleton: The Normal Skeleton, Variants and Pitfalls

    International Nuclear Information System (INIS)

    2011-01-01

    Since the introduction of 99m technetium polyphosphate in 1972 by Dr. M. Subramanian, bone scintigraphy has become an integral part of the evaluation of paediatric musculoskeletal disorders. Using the current high resolution gamma cameras and 99m technetium-methylene diphosphonate ( 99m Tc-MDP) or 99m Tc 2,3-dicarboxypropane-1,1-diphosphonate ( 99m Tc-DPD), the quality of images available for interpretation is high. From the very earliest days, there has been a certain confusion over normal bone physiology, as depicted by the bone scintigram in paediatric patients. This has resulted in a number of difficulties in detecting subtle abnormalities, especially near the dynamically changing scintigraphic presentation of the physes (growth zones). Examples of abnormalities that might be confused with normal bone activity are osteomyelitis, bucket handle fractures of the long bones, as well as neuroblastoma and leukaemic metastases. The aim of this publication is to provide structured information about the maturation and normal appearance of the skeleton from infancy to adulthood. As such, it reflects the current status of bone scintigraphy. It is hoped that this work will contribute to an enhanced understanding of the dynamic process of naturally occurring metabolic bone changes, which will, in turn, improve the quality of reporting of paediatric bone scans. As the majority of paediatric bone scintigrams are interpreted by non-paediatric nuclear physicians, the availability of this reference atlas should improve the care of children. This atlas is intended to address the needs of nuclear medicine physicians, both residents and specialists. It is intended to serve as an illustrative reference to those not having sufficient exposure to paediatric bone scan investigations, to enable them to maintain adequate competency in this particular application. Experts in paediatric nuclear medicine are often consulted for their opinion on bone scans obtained in their respective

  20. The Correction of Resolution in Scintigraphy

    International Nuclear Information System (INIS)

    Di Paola, R.; Albarede, P.; Tubiana, M.

    1969-01-01

    The informational content of activity distribution in an object becomes degraded as it passes through a scintigraphic system, and this degredation is shown in the image by distortions and by a lessening of the contrasts found in the object. The drawback can be countered by improved collimator resolution, for the collimator is the main cause of poorer modulation in the image. But as the sensitivity of collimated detectors must be sufficient to enable clinical scintigraphy to be carried out, their resolving power is limited. Recovery of the original information from an image distribution by means of response function of the detection system is a general problem that has already been examined in a number of fields. In the paper the authors have studied the problem in linear scintigraphy. The experimental nature of the study has given rise to serious problems of interpretation. The authors therefore used a UNIVAC 1107 computer for both processing and generating their images. In this way, object and image distribution before and after processing are strictly comparable. In order to compare different processing techniques (successive unfolding methods, smoothing techniques, etc.) quantitative criteria are needed, and these same quantitative criteria can be used to assess the limits of validity of the recovery operations used to be evaluated. With this aim in mind, the authors chose for their study sinusoidal sources, using as a criterion the modulation transfer function linked with a second test which can be used to assess discrepancies between distributions. The study has made it possible to select the optimum technique and to establish its exact limitations as regards information content and spatial frequency of distributions. (author) [fr

  1. Thyroidal malignancy and scintigraphy; Schilddrsenmalignitaet und Szintigrafie

    Energy Technology Data Exchange (ETDEWEB)

    Brandt-Mainz, K.; Moka, D. [Gemeinschaftspraxis fuer Radiologie und Nuklearmedizin Radionuk, Essen (Germany)

    2008-09-15

    Thyroid hypofunctional ('scintigraphic cool or cold') nodules are detected frequently. Dependent on the clinical situation, on morbidity and on economic aspects it is necessary to select patients for surgery and to avoid unnecessary surgical treatment. Therefore it is necessary to develop appropriate diagnostic algorithm to manage hypofunctional thyroid nodules. The ultrasound guided fine-needle aspiration cytology (FNA) is on the one hand side a useful diagnostic tool, but on the other hand side there exist certain limitations. It is questionable if the nodule is correctly reached. In case of heterogeneous larger mixed nodules or multiple hypofunctional nodules, it is difficult to choose the correct location of punctation. Furthermore a certain number of FNA's is not diagnostic without any result or due to 'follicular neoplasia'. {sup 99m}Tc-MIBI-sctintigraphy (MIBI) and {sup 18}F-FDG-positron-emission-tomography (FDG-PET) are established methods in the follow-up of differentiated thyroid cancer after thyroidectomy with elevated thyroglobulin-levels without adequate 131-Iodine-uptake. Moreover in case of parafollicular medullary thyroid carcinomas after thyroidectomy with elevated calcitonin-concentrations the FDG-PET is a valuable diagnostic method in localizing tumor. However these tracers gain in importance in differentiating malignant from benign preoperative hypofunctional nodules. In conclusion MIBI-scintigraphy should be used routinely to plan the correct guide of FNA. The application of both methods (MIBI and FNA) improves the differentiation of dignity, whereas a negative MIBI-examination and a negative FNA is able to exclude malignancy nearly. In this way the number of unnecessary numbers of surgical treatments can be reduced. FDG-PET is not definitely superior compared to MIBI-scintigraphy. From the cost perspective MIBI is more attractive than FDG-PET. (orig.)

  2. Radioaerosol inhalation lung scintigraphy in bronchial asthma

    International Nuclear Information System (INIS)

    Chiba, Takashi

    1993-01-01

    A study on obstructive changes in airways and mucociliary clearance in children and youth with bronchial asthma was performed. Radioaerosol inhalation lung scintigraphies using 99T c-human serum albumin (HSA) were applied to 50 children and youth with bronchial asthma. The deposition patterns of the radioaerosol and aerosol clearance curves were evaluated. Abnormal deposition patterns, which consisted of non-homogeneous distribution and/or hot spot formation, were likely to be seen in patients with asthmatic attacks at the time of measurements. However, a few asymptomatic patients also revealed abnormal deposition patterns. The deposition patterns were related to FEV 1.0 %, MMF, V 50 and V 25 , but especially to FEV 1.0 %. As an index of mucociliary clearance, β, the rate constant of the 99m Tc-HSA aerosol clearance curve, was introduced. β was significantly lower in patients with abnormal aerosol deposition patterns than in normal persons. β was also significantly lower in patients undergoing asthmatic attack at the time of the measurements than in asymptomatic patients. β correlated negatively with FEV 1.0 %, MMF, V 50 and V 25 , but especially with FEV 1.0 %. Although patients with long term affection or moderate-to-severe asthma tended to reveal abnormal deposition patterns and had low β values, these differences were not statistically significant. Radioaerosol inhalation lung scintigraphy with 99m Tc-HSA is useful for evaluating not only obstructive changes in the airways but also for evaluating mucociliary clearance in children with bronchial asthma. (author)

  3. Detectability of metastatic bone tumor by Ga-67 scintigraphy

    International Nuclear Information System (INIS)

    Koizumi, Kiyoshi; Uchiyama, Guio; Araki, Tsutomu; Hihara, Toshihiko; Ogata, Hitoshi; Monzawa, Shuichi; Kachi, Kenji; Matsusako, Masaki

    1989-01-01

    Ga-67 scintigrams in patients with malignant diseases sometimes reveal uptake of the tracer in the bone metastases. Detectability of Ga-67 scintigraphy for metastatic bone tumors and benign bone lesions was compared with that of Tc-99m bone scintigraphy. Countable bone metastases detected by bone scintigraphy were evaluated whether the lesion showed apparent, faint, or negative Ga-67 uptake. Of 47 lesions 23 (49%) showed apparent uptake and 17 (36%) showed negative uptake, only 7 (10%) mostly fracture/osteotomy, showed apparent uptake of the tracer. Uptake in the other benign lesions such as trauma of the ribs, spondylosis deformans, and arthrosis deformans was rather faint. In patients with multiple bone metastases, 9 patients (82%) out of 11 showed more prominent abnormal findings in Tc-99m MDP bone scintigraphy than in Ga-67 scintigraphy; that is, Ga-67 scintigraphy was not able to reveal all metastatic bone lesions. In patients with untreated or recurrent tumors, relation between Ga-67 uptake in the tumors and that in the bone metastases was evaluated. Of 7 patients with negative Ga-67 uptake in the bone metastases; that is, there seemed to be little relation between Ga-67 affinity to the primary tumors and that to the bone metastases. Mechanisms of the Ga-67 uptake in the bone metastases were discussed. Not only the tumor cells or tissues in the bone metastases but also bone mineral or osteoclasts might be the deposition sites of Ga-67. (author)

  4. Detectability of metastatic bone tumor by Ga-67 scintigraphy

    Energy Technology Data Exchange (ETDEWEB)

    Koizumi, Kiyoshi; Uchiyama, Guio; Araki, Tsutomu; Hihara, Toshihiko; Ogata, Hitoshi; Monzawa, Shuichi; Kachi, Kenji; Matsusako, Masaki

    1989-03-01

    Ga-67 scintigrams in patients with malignant diseases sometimes reveal uptake of the tracer in the bone metastases. Detectability of Ga-67 scintigraphy for metastatic bone tumors and benign bone lesions was compared with that of Tc-99m bone scintigraphy. Countable bone metastases detected by bone scintigraphy were evaluated whether the lesion showed apparent, faint, or negative Ga-67 uptake. Of 47 lesions 23 (49%) showed apparent uptake and 17 (36%) showed negative uptake, only 7 (10%) mostly fracture/osteotomy, showed apparent uptake of the tracer. Uptake in the other benign lesions such as trauma of the ribs, spondylosis deformans, and arthrosis deformans was rather faint. In patients with multiple bone metastases, 9 patients (82%) out of 11 showed more prominent abnormal findings in Tc-99m MDP bone scintigraphy than in Ga-67 scintigraphy; that is, Ga-67 scintigraphy was not able to reveal all metastatic bone lesions. In patients with untreated or recurrent tumors, relation between Ga-67 uptake in the tumors and that in the bone metastases was evaluated. Of 7 patients with negative Ga-67 uptake in the bone metastases; that is, there seemed to be little relation between Ga-67 affinity to the primary tumors and that to the bone metastases. Mechanisms of the Ga-67 uptake in the bone metastases were discussed. Not only the tumor cells or tissues in the bone metastases but also bone mineral or osteoclasts might be the deposition sites of Ga-67.

  5. Bone- and bone marrow scintigraphy in Gaucher disease type 1

    International Nuclear Information System (INIS)

    Mikosch, P.; Zitter, F.; Gallowitsch, H.J.; Lind, P.; Wuertz, F.; Mehta, A.B.; Hughes, D.A.

    2008-01-01

    Scintigraphy is a method for imaging metabolism and should be viewed as complimentary to morphological imaging. Bone and bone marrow scintigraphy can particularly contribute to the detection of focal disease in Gaucher disease. In bone crises it can discriminate within three days after pain onset between local infection and aseptic necrosis. A further advantage of bone- and bone marrow scintigraphy is the visualization of the whole skeleton within one setting. Whole body imaging for focal lesions might thus be an objective in GD, in particular in patients complaining of several painful sites. Direct imaging of bone marrow deposits in GD by MIBI scintigraphy might be of special interest in children in whom bone marrow undergoes a developmental conversion from red to yellow marrow in the ap-pendicular skeleton. MRI interpretation in young GD patients is thus difficult in order to estimate the exact amount and extent of bone marrow infiltration by Gaucher cells. 99mTc-MIBI scintigraphy with its direct visualization of lipid storage could thus add interesting additional information not shown with other methods including MRI. Although MRI is the most accepted imaging modality in assessing the skeletal status in GD, a selective use of scintigraphy for imaging bone and bone marrow may add information in the evaluation of patients with Gaucher disease

  6. Nuclear Medicine Imaging in Pediatric Infection or Chronic Inflammatory Diseases

    NARCIS (Netherlands)

    Signore, Alberto; Glaudemans, Andor W. J. M.; Gheysens, Olivier; Lauri, Chiara; Catalano, Onofrio A.

    In this review article, we focus on the most recent applications of nuclear medicine techniques (mainly (99m)Tc/(111)In white blood cells (WBC) scan, [(18)F]-FDG-PET/CT, [(18)F]-FDG-PET/MRI, and (99m)Tc-IL-2 scintigraphy) in the study of children affected by peripheral bone osteomyelitis, fungal

  7. Radiation exposure around patients after 201Tl-myocardial scintigraphy

    International Nuclear Information System (INIS)

    Kurtaran, A.; Preitfellner, J.; Kohoutek, D.; Tousek, A.; Virgolini, I.; Havlik, E.

    1997-01-01

    Aim: It was the aim of the study to assess the additional radiation exposure to patients, attendents and nurses by patients who are undergoing nuclear medicine investigations (myocardial scintigraphy) with 201 Tl-chloride ( 201 Tl-Cl). Methode: In 16 cases the dose rates at 0.5, 1 and 2 m distance from patients were measured at 0.5, 1.5, 3-4 and 24, in some cases until 370 h after administration of 100±10 MBq 201 Tl-Cl. From the time courses of the dose rates around the patients the possible radiation exposure of other persons were estimated. Results: The initial values of the dose rate were 3.82 μSv/h at 0.5 m, 1.18 μSv/h at 1 m and 0.30 μSv/h at 2 m distance from the patients respectively. The dose rates were decreasing following a monoexponential course with an effective half-life of 60 h. The maximum doses to other persons at 1 m distance from the patients were determined by considering three scenarios. The values were 13 μSv in the waiting room, 26 μSv for nurses working in the ward and 105 μSv for persons living in the same household. Conclusion: Even at very restrictive assumptions the doses were far below the maximum permissible dose to non-radiation workers set by radiation protection regulations (1.5 mSv per year). (orig.) [de

  8. Physiologic basics and clinical experience with somatostatin-receptor-scintigraphy

    International Nuclear Information System (INIS)

    Henze, E.; Eberhardt, J.U.; Bohuslavizki, K.H.

    1994-01-01

    The introduction of radiolabelled octreotide, an analogon to the receptor binding hormone Somatostatin, has markedly increased the ability to detect structures and tumours carrying somatostatin receptors by nuclear medicine imaging with high sensitivity and specificity. It has been shown that in vitro receptor density and in vivo scintigraphic results correlate well in particular in tumours of neuroendocrine origin of the GI tract such as insulinomas, gastrinomas, glucagonomas, carcionoids, but also in paragangliomas, small cell lung cancer and meningiomas. As receptors were also shown to be present on so called activated leucocytes granulomas, lymphomas and autoimmune disease have been imaged with octreotide successfully. The specific tracer (In-111-DTPA-D-PHE-Octreotide, Octreoscan R ) is rapidly cleared from the blood pool by the kidneys and, partially, via the liver providing a high target to background ratio. Physiologic uptake is usually observed in the pituitary and thyroid glands, in spleen and liver. Optimum tracer accumulation for tumour scintigraphy is seen on the 24-h-images with the best target to background ratios. Additional SPECT-imaging is recommended in particular in the abdominal regions. The sensitivity in imaging the above named tumours ranges from 70 up to 100%. In-111 octreotide imaging is of diagnostic impact both for the primary diagnostic evaluation as well as for detecting or excluding secondary manifestations in known tumour sites. Of specific value is the information on relative receptor density in the tumour to be treated as may be obtained by quantitative In-111 octreotide imaging for decision making whether or not to use cold octreotide (Sandostatin R ) as a receptor blocking drug for therapy as well as for treatment follow-up studies. (author)

  9. The inter-observer variability of breast density scoring between mammography technologists and breast radiologists and its effect on the rate of adjuvant ultrasound.

    Science.gov (United States)

    Mazor, Roei D; Savir, Avital; Gheorghiu, David; Weinstein, Yuliana; Abadi-Korek, Ifat; Shabshin, Nogah

    2016-05-01

    This study assesses the inter-observer variability of mammographic breast density scoring (BDS) between technologists and radiologists and evaluates the effect of technologist patient referral on the load of adjuvant ultrasounds. In this IRB approved study, a retrospective analysis of 503 prospectively acquired, random mammograms was performed between January and March 2014. Each mammogram was evaluated for BDS independently and blindly by both the performing technologist and the interpreting radiologist. Statistical calculation of the Spearman correlation coefficient and weighted kappa were obtained to evaluate the inter-observer variability between technologists and radiologists and to examine whether it relates to the technologist's seniority or women's age. The effect on the load of adjuvant ultrasounds was evaluated. 10 mammography technologists and 7 breast radiologists participated in this study. BDS agreement levels between technologists and radiologists were in the fair to moderate range (kappa values: 0.3-0.45, Spearman coefficient values: 0.59-0.65). The technologists markedly over-graded the density compared to the radiologists in all the subsets evaluated. Comparison between low and high-density groups demonstrated a similar trend of over-grading by technologists, who graded 51% of the women as having dense breasts (scores 3-4) compared to 27% of the women graded as such by the radiologists. This trend of over grading breast density by technologists was unrelated to the women's age or to the technologists' seniority. Mammography technologists over-grade breast density. Technologists' referral to an adjuvant ultrasound leads to redundant ultrasound studies, unnecessary breast biopsies, costs and increased patient anxiety. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

  10. Analysis of Influencing Factors Related to Health Promotion Behavior in Hospital Radiological Technologists

    International Nuclear Information System (INIS)

    Ko, Jong Kyung; Kwon, Duk Mun; Kang, Yeong Han

    2009-01-01

    The purpose of this study was to analyze factors that could affect health of radiological technologists, which is useful for health care and development of programs for health promotion. Subjects were 234 of radiological technologists who work in general hospitals. Some questionnaires were made about perceptions of health condition and promotional behavior of health for this study. The questionnaires of health perception were 20 items that consist of the present condition of health, health concern and sensitivity. The reliability was sufficient(Cronbach's α=0.79). The other questionnaires about health promotion behavior were 47 items that consist of self-realization, health responsibility, exercise, nutrition, personal relationships, and stress management. The results turned out to be was sufficient (Cronbach's α=0.93). Every data was treated statistically, comparison of average(t-test, ANOVA), correlation, and multiple regression. Related factors to health promotion behavior were age, marriage, salary, class of one's position, career, employment, and religion, in general features. In health life habit, related factors were smoke and exercise. Results of health promotion behavior was 2.90 of mean score, 0.37 of standard deviation. Correlations between factors of health perception and health promotion behavior was positive(p<0.01). Health promotion behavior were affected by sensitivity, presents condition of health, exercise, smoke, career. Sensitivity was the most affectable variable, which means that promotional behavior score became higher and higher as the score of sensitivity and present condition were increased. In addition, persons who exercise regularly, had been smoked, and has higher career showed higher score of promotional behavior. Radiological technologists have to keep their health, trying not to infected by a disease. Most of all, no smoking and regular exercise are the most important thing to all of members.

  11. Work history and mortality risks in 90,268 US radiological technologists.

    Science.gov (United States)

    Liu, Jason J; Freedman, D Michal; Little, Mark P; Doody, Michele M; Alexander, Bruce H; Kitahara, Cari M; Lee, Terrence; Rajaraman, Preetha; Miller, Jeremy S; Kampa, Diane M; Simon, Steven L; Preston, Dale L; Linet, Martha S

    2014-12-01

    There have been few studies of work history and mortality risks in medical radiation workers. We expanded by 11 years and more outcomes our previous study of mortality risks and work history, a proxy for radiation exposure. Using Cox proportional hazards models, we estimated mortality risks according to questionnaire work history responses from 1983 to 1989 through 2008 by 90,268 US radiological technologists. We controlled for potential confounding by age, birth year, smoking history, body mass index, race and gender. There were 9566 deaths (3329 cancer and 3020 circulatory system diseases). Mortality risks increased significantly with earlier year began working for female breast (p trend=0.01) and stomach cancers (p trend=0.01), ischaemic heart (p trend=0.03) and cerebrovascular diseases (p trend=0.02). The significant trend with earlier year first worked was strongly apparent for breast cancer during baseline through 1997, but not 1998-2008. Risks were similar in the two periods for circulatory diseases. Radiological technologists working ≥5 years before 1950 had elevated mortality from breast cancer (HR=2.05, 95% CI 1.27 to 3.32), leukaemia (HR=2.57, 95% CI 0.96 to 6.68), ischaemic heart disease (HR=1.13, 95% CI 0.96 to 1.33) and cerebrovascular disease (HR=1.28, 95% CI 0.97 to 1.69). No other work history factors were consistently associated with mortality risks from specific cancers or circulatory diseases, or other conditions. Radiological technologists who began working in early periods and for more years before 1950 had increased mortality from a few cancers and some circulatory system diseases, likely reflecting higher occupational radiation exposures in the earlier years. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  12. Microsystems technologist workforce development capacity and challenges in Central New Mexico.

    Energy Technology Data Exchange (ETDEWEB)

    Osborn, Thor D.

    2008-04-01

    Sandia National Laboratories has made major investments in microsystems-related infrastructure and research staff development over the past two decades, culminating most recently in the MESA project. These investment decisions have been made based in part upon the necessity for highly reliable, secure, and for some purposes, radiation-hardened devices and subsystems for safety and sustainability of the United States nuclear arsenal and other national security applications. SNL's microsystems development and fabrication capabilities are located almost entirely within its New Mexico site, rendering their effectiveness somewhat dependent on the depth and breadth of the local microsystems workforce. Consequently, the status and development capacity of this workforce has been seen as a key personnel readiness issue in relation to the maintenance of SNL's microsystems capabilities. For this reason SNL has supported the instantiation and development of the Southwest Center for Microsystems Education, an Advanced Technology Education center funded primarily by the National Science Foundation, in order to foster the development of local training capacity for microsystems technologists. Although the SCME and the associated Manufacturing Technology program at Central New Mexico Community College have developed an effective curriculum and graduated several highly capable microsystems technologists, the future of both the center and the degree program remain uncertain due to insufficient student enrollment. The central region of New Mexico has become home to many microsystems-oriented commercial firms. As the demands of those firms for technologists evolve, SNL may face staffing problems in the future, especially if local training capacity is lost.

  13. Analysis of Influencing Factors Related to Health Promotion Behavior in Hospital Radiological Technologists

    Energy Technology Data Exchange (ETDEWEB)

    Ko, Jong Kyung [Kim, In Hwan Internal Medicine Health Promotion Cnter, Youngcheon (Korea, Republic of); Kwon, Duk Mun [Dept. of Radiology Technology, Daegu Health College, Daegu (Korea, Republic of); Kang, Yeong Han [Dept. of Diagnostic Radiology, Daegu Catholic Univesity Hospital, Daegu (Korea, Republic of)

    2009-12-15

    The purpose of this study was to analyze factors that could affect health of radiological technologists, which is useful for health care and development of programs for health promotion. Subjects were 234 of radiological technologists who work in general hospitals. Some questionnaires were made about perceptions of health condition and promotional behavior of health for this study. The questionnaires of health perception were 20 items that consist of the present condition of health, health concern and sensitivity. The reliability was sufficient(Cronbach's {alpha}=0.79). The other questionnaires about health promotion behavior were 47 items that consist of self-realization, health responsibility, exercise, nutrition, personal relationships, and stress management. The results turned out to be was sufficient (Cronbach's {alpha}=0.93). Every data was treated statistically, comparison of average(t-test, ANOVA), correlation, and multiple regression. Related factors to health promotion behavior were age, marriage, salary, class of one's position, career, employment, and religion, in general features. In health life habit, related factors were smoke and exercise. Results of health promotion behavior was 2.90 of mean score, 0.37 of standard deviation. Correlations between factors of health perception and health promotion behavior was positive(p<0.01). Health promotion behavior were affected by sensitivity, presents condition of health, exercise, smoke, career. Sensitivity was the most affectable variable, which means that promotional behavior score became higher and higher as the score of sensitivity and present condition were increased. In addition, persons who exercise regularly, had been smoked, and has higher career showed higher score of promotional behavior. Radiological technologists have to keep their health, trying not to infected by a disease. Most of all, no smoking and regular exercise are the most important thing to all of members.

  14. The results of questionnaire on quantitative assessment of 123I-metaiodobenzylguanidine myocardial scintigraphy in heart failure

    International Nuclear Information System (INIS)

    Nishimura, Tsunehiko; Sugishita, Yasurou; Sasaki, Yasuhito.

    1997-01-01

    This study was done by working group under the cooperation between Japanese Society of Nuclear Medicine and Japanese Circulation Society. We evaluated the usefulness of quantitative assessment of 123 I-metaiodobenzylguanidine (MIBG) myocardial scintigraphy in heart failure by the results of questionnaire. Forty-nine (72.1%) of 68 selected institutions participated in this study. The incidence of MIBG myocardial scintigraphy used in heart failure was 41.1%. The imaging protocol was mostly done by both planar and SPECT at 15 min and 3.6 hr after intravenous injection of 111 MBq of MIBG. The quantitative assessment was mostly done by heart/mediastinum (H/M) ratio and washout rate analysis based on planar imaging. The mean normal value of H/M ratio were 2.34±0.36, and 2.49±0.40, at early and delayed images, respectively. The normal value of washout rate was 27.74±5.34%. On the other hand, those of H/M ratio in heart failure were 1.87±0.27, and 1.75±0.24, at early and delayed images, respectively. That of washout rate was 42.30±6.75%. These parameters were very useful for the evaluation of heart failure. In conclusion, MIBG myocardial scintigraphy was widely used for not only early detection and severity assessment, but also indication for therapy and prognosis evaluation in heart failure patients. (author)

  15. The results of questionnaire on quantitative assessment of {sup 123}I-metaiodobenzylguanidine myocardial scintigraphy in heart failure

    Energy Technology Data Exchange (ETDEWEB)

    Nishimura, Tsunehiko [Osaka Univ., Suita (Japan). Medical school; Sugishita, Yasurou; Sasaki, Yasuhito

    1997-12-01

    This study was done by working group under the cooperation between Japanese Society of Nuclear Medicine and Japanese Circulation Society. We evaluated the usefulness of quantitative assessment of {sup 123}I-metaiodobenzylguanidine (MIBG) myocardial scintigraphy in heart failure by the results of questionnaire. Forty-nine (72.1%) of 68 selected institutions participated in this study. The incidence of MIBG myocardial scintigraphy used in heart failure was 41.1%. The imaging protocol was mostly done by both planar and SPECT at 15 min and 3.6 hr after intravenous injection of 111 MBq of MIBG. The quantitative assessment was mostly done by heart/mediastinum (H/M) ratio and washout rate analysis based on planar imaging. The mean normal value of H/M ratio were 2.34{+-}0.36, and 2.49{+-}0.40, at early and delayed images, respectively. The normal value of washout rate was 27.74{+-}5.34%. On the other hand, those of H/M ratio in heart failure were 1.87{+-}0.27, and 1.75{+-}0.24, at early and delayed images, respectively. That of washout rate was 42.30{+-}6.75%. These parameters were very useful for the evaluation of heart failure. In conclusion, MIBG myocardial scintigraphy was widely used for not only early detection and severity assessment, but also indication for therapy and prognosis evaluation in heart failure patients. (author)

  16. 111In-oxine labelled leukocyte scintigraphy in the detection and localization of active inflammation and sepsis

    International Nuclear Information System (INIS)

    Kelly, M.J.; Kalff, V.; Hicks, R.J.; Spicer, W.J.; Spelman, D.W.

    1990-01-01

    Indium-111-oxine labelled leukocyte scintigraphy is a diagnostic technique which has recently become available for clinic evaluation within Australia. The technique was used to assess patients with suspected sepsis of inflammation after other commonly used investigations had failed to confirm a diagnosis. Four patient subgroups were evaluated: fever of unknown origin suspected abdominal or postoperative sepsis; suspected active inflammatory bowel disease; and suspected sepsis or inflammation of bones or joints. The course of all patients was followed for at least three months to establish the accuracy of the technique. The leukocyte labelling procedure took 90 min and imaging was carried out typically 3-6, 24 and occasionally 48 h after reinjection of the labelled leukocytes. Only in one patient labelling of leukocytes was unsuccessful. In the remaining 99 studies, the overall sensitivity of leukocyte scintigraphy was 88% (36 of 41 patients with a proved inflammatory or infective disease focus had positive scan findings);and the specificity was 95% (55 of 58 cases with no proved disease focus had normal scan findings). These results support the use of this method in nuclear medicine for the evaluation of suspected acute sepsis (symptoms less than four weeks' duration), of inflammatory bowel disease and of suspected infections involving appendicular bones which contain no active bone marrow. It is also a useful secondary scintigraphic procedure, after gallium-67-citrate scintigraphy, in patients with suspected infective disorders of more than four weeks' duration. 27 refs., 2 tabs., 5 figs

  17. Derivation of quantitative parameters from salivary scintigraphy and their utility in the diagnosis of xerostomia

    International Nuclear Information System (INIS)

    Booker, J.A.; Sutherland, D.C.; Howarth, D.M.; Taylor, L.; Tan, P.

    2002-01-01

    Full text: Xerostomia may be due to salivary dysfunction from a variety of causes and can be clinically variable ranging from halitosis to overt xerostomia. Semi-quantitative indices may be derived from salivary scintigraphy and may aid both clinical diagnosis and response to treatment. The objective of this study was to determine whether semi-quantitative indices were able to distinguish normal from abnormal salivary function and to be clinically useful. 56 consecutive patients with xerostomia (including a subset of 10 patients with clinical Sjogrens syndrome) and 25 healthy volunteers underwent salivary scintigraphy. Semi-quantitative analysis of time activity curves was performed deriving 6 different indices for each of the four major salivary glands. These indices included percent uptake (%UP), uptake ratios(UR),maximum accumulation (MA), pre-stimulatory oral radioactivity index (PRI), post-stimulatory oral radioactivity index (POI) and ejection fraction (EF). The 95% confidence interval around the mean values was used to compare normal volunteers and xerostomia patients. Wide reference limits were obtained for all indices derived from normal volunteers. No significant difference was found between normal volunteers and patients using any of the six indices. UR and EF showed the greatest difference between the groups. Allowing for Type Two (Beta) error, none of the above indices allow patients with xerostomia who have salivary dysfunction to be distinguished from normal subjects. Copyright (2002) The Australian and New Zealand Society of Nuclear Medicine Inc

  18. Studies of GI bleeding with scintigraphy and the influence of vasopressin

    International Nuclear Information System (INIS)

    Alavi, A.; McLean, G.K.

    1981-01-01

    The management of patients with gastrointestinal (GI) bleeding depends on accurate localization of the site of hemorrhage. Endoscopy and arteriography, although successful in achieving this goal in the majority of patients, are invasive and have other shortcomings. The introduction of the 99mTc-sulfur colloid technique has greatly simplified the evaluation and management of these patients. This test is useful in detecting and localizing the bleeding site in the lower GI tract. Scintigraphy is now used as the initial study of choice in patients with rectal bleeding. Advances made in angiography and nuclear medicine techniques also have resulted in improved management of patients. Conservative approaches succeed in controlling hemorrhage in most patients. Vasopressin is the most widely tested agent and has been adopted by many as the preferred preparation for this purpose. Before the introduction of the 99mTc-sulfur colloid technique, angiography was used to monitor the effectiveness of this drug, whether administered intravenously or intraarterially. With the use of scintigraphy and intravenous administration of vasopressin, these patients now can be managed noninvasively. Only when the intravenous Pitressin infusion fails to stop hemorrhage, is the intraarterial approach considered. Surgery is used as a last resort when these measures fail to stop the bleeding

  19. A Model for Protective Behavior Against the Harmful Effects of Radiation for Radiological Technologists in Medical Radiological Technologists in Medical Centers

    International Nuclear Information System (INIS)

    Han, Eun Ok; Moon, In Ok

    2009-01-01

    Protective behavior of radiological technologists against radiation exposure is important to achieve reduction of the patient doses without compromising medical achievements. This study attempts to provide a basic model for the sophisticated intervention strategy that increases the level of the protective behavior of the technologists. The model was applied to real situations in Korea to demonstrate its utility. The results of this study are summarized as follows: First, the protective environment showed the highest relationship in the factors considered, r=0.637 (p<0.01). Secondly, the important factors were protective environment in environment characteristics, expectation for the protective behavior 0.228 (p<0.001), self efficacy 0.142 (p<0.001), and attitude for the protective behavior 0.178 (p<0.001) in personal characteristics, and daily patient -0.112 (p<0.001) and number of the participation in the education session for the protective behavior 0.074 (p<0.05). Thirdly, the final protective behavior model by a path analysis method had direct influence on the attitude 0.171 (p<0.01) and environment 0.405 (p<0.01) for the protective behavior, self efficacy 0.122 (p<0.01), expectation for the protective behavior 0.16 (p<0.01), and self-efficacy in the specialty of projects 0.154 (p<0.01). The acceptance of the model determined by the absolute fit index (GFI), 0.969, and by the incremental fit index (CFI), 0.943, showed very significant levels. Value of 2/df that is a factor applied to verify the acceptance of the model was 37, which implies that the result can be accepted in the desirable range. In addition, the parsimonious fit index configured by AGFI (0.890) and TLI (0.852) was also considered as a scale that accepts the model in practical applications. In case of the establishment of some specific intervention strategies based on the protective behavior model against harmful radiation effects proposed in this study, the strategy will provide an effective way

  20. A Model for Protective Behavior Against the Harmful Effects of Radiation for Radiological Technologists in Medical Radiological Technologists in Medical Centers

    Energy Technology Data Exchange (ETDEWEB)

    Han, Eun Ok [Daegu Health College, Daegu (Korea, Republic of); Moon, In Ok [Ewha Woman' s University, Seoul (Korea, Republic of)

    2009-09-15

    Protective behavior of radiological technologists against radiation exposure is important to achieve reduction of the patient doses without compromising medical achievements. This study attempts to provide a basic model for the sophisticated intervention strategy that increases the level of the protective behavior of the technologists. The model was applied to real situations in Korea to demonstrate its utility. The results of this study are summarized as follows: First, the protective environment showed the highest relationship in the factors considered, r=0.637 (p<0.01). Secondly, the important factors were protective environment in environment characteristics, expectation for the protective behavior 0.228 (p<0.001), self efficacy 0.142 (p<0.001), and attitude for the protective behavior 0.178 (p<0.001) in personal characteristics, and daily patient -0.112 (p<0.001) and number of the participation in the education session for the protective behavior 0.074 (p<0.05). Thirdly, the final protective behavior model by a path analysis method had direct influence on the attitude 0.171 (p<0.01) and environment 0.405 (p<0.01) for the protective behavior, self efficacy 0.122 (p<0.01), expectation for the protective behavior 0.16 (p<0.01), and self-efficacy in the specialty of projects 0.154 (p<0.01). The acceptance of the model determined by the absolute fit index (GFI), 0.969, and by the incremental fit index (CFI), 0.943, showed very significant levels. Value of 2/df that is a factor applied to verify the acceptance of the model was 37, which implies that the result can be accepted in the desirable range. In addition, the parsimonious fit index configured by AGFI (0.890) and TLI (0.852) was also considered as a scale that accepts the model in practical applications. In case of the establishment of some specific intervention strategies based on the protective behavior model against harmful radiation effects proposed in this study, the strategy will provide an effective way

  1. Is nuclear medicine really safe?

    International Nuclear Information System (INIS)

    Colas-Linhart, N.

    2000-01-01

    How to evaluate the benefit-risks ratio of scintigraphies? In nuclear medicine, radiation absorbed dose estimates at whole body or organ levels are very low. Nevertheless, at cellular level, there are both heterogeneity of distribution and heterogeneity of radiation emission. Consequently, absorbed doses at cellular level are often calculated. These absorbed dose values are surprising, even disturbing or not interpretable. In the present study, we have searched the biological consequences at the cellular level, radioinduced by two radiopharmaceuticals labelled with 99m Tc: human serum albumin microspheres and HMPAO, studying the cellular ultrastructure, over expression of p53 and scoring instable chromosomal aberrations. (author)

  2. Renal dynamic scintigraphy in renal graft evaluation; Cintilografia renal dinamica na avaliacao do transplante renal

    Energy Technology Data Exchange (ETDEWEB)

    Cervo, Marco Antonio Cadorna; Amarante Junior, Jose Luiz de Medeiros; Souza, Ricardo Alberto Manhaes de; Evangelista, Maria Gardenia; Cavalcante, Carlos Alberto Provasi; Neder, Jacqueline de Roure e; Espinola, Ircania Jorge [Hospital Naval Marcilio Dias, Rio de Janeiro, RJ (Brazil). Servico de Medicina Nuclear

    1996-12-31

    The goal of this was to describe the use of the dynamic renal scintigraphy in patients grafted. The authors described the scintigraphy method utilised and results were discussed 8 refs., 9 figs., 1 tab.

  3. Isoproterenol stress thallium scintigraphy for detecting coronary artery disease

    International Nuclear Information System (INIS)

    Watanabe, Shigeyuki; Ajisaka, Ryuichi; Masuoka, Takeshi; Iida, Kaname; Sugishita, Yasuro; Ito, Iwao; Takeda, Tohru; Toyama, Hinako; Akisada, Masayoshi

    1989-01-01

    The present study was undertaken to assess the diagnostic value of isoproterenol (ISP) thallium scintigraphy. The findings were compared with those of ISP-ECG and exercise thallium scintigraphy. The study population consisted of 24 patients who had a history of chest pain without previous myocardial infarction. ISP was given at increasing doses of 0.02, 0.04, 0.08 μg/mg/min at 3-minutes intervals, and was terminated for any of the following reasons: angina, significant arrhythmia, significant ST segment depression, or target heart rate. Thallium scintigrams were obtained immediately after terminating ISP infusion, and after a 3-hour delay, redistribution scans were obtained. Scintigrams were considered positive when a reversible defect was present. After stress tests, coronary angiography was performed. According to the presence or absence of significant coronary artery stenosis, the patients were divided into coronary artery disease (CAD) group (n=12) and so-called normal coronary (NC) group (n=12). Among 12 patients in the CAD group, ISP induced anginal pain in six (50%), and ISP-ECT and ISP thallium scintigraphy were positive in 10 (83%) and in 11 (92%), compared with four(33%), four(33%) and two (17%) in the NC group. These data indicate that ISP-ECG had a sensitivity of 83%, a specificity of 67%, and a diagnostic accuracy of 75%; and the corresponding figures for ISP thallium scintigraphy were 92%, 83%, and 88%. Among nine patients who underwent both ISP thallium scintgraphy and exercise thallium scintigraphy, all patients, except for one false negative case on ISP thallium scintigraphy, were correctly diagnosed. No serious complications occurred in association with the ISP infusion test. ISP thallium scintigraphy was considered to be a safe, sensitive, and specific method for diagnosing CAD when exercise tests were intolerable. (N.K.)

  4. Frequency of recommendations for additional imaging in diagnostic ultrasound examinations: Evaluation of radiologist, technologist, and other examination-related factors.

    Science.gov (United States)

    Margolis, Nathaniel E; Rosenkrantz, Andrew B; Babb, James S; Macari, Michael

    2015-10-01

    Our aim in this study was to evaluate the effect of the radiologist, technologist, and other examination-related factors on the frequency of recommendations for additional imaging (RAI) during sonographic (US) interpretation. We retrospectively reviewed 719 US reports from a single academic medical center for the presence of RAI. All studies had been interpreted by one of three abdominal radiologists. Examinations were performed at an outpatient radiology facility with no onsite radiologist (n = 299) or at an inpatient emergency department or hospital-based outpatient setting that had an onsite radiologist (n = 420). Possible associations between the frequency of RAI and the presence of an onsite radiologist, location of the examination, body part or region imaged, patient age, technologist performing the exam, and radiologist reading the exam were evaluated. There were significant differences between each pair of radiologists in terms of overall frequency of RAI (p technologists (13.6%-40.0%, p = 0.03). However, other factors such as patient age, patient sex, US unit, patient location, and radiologist location were not associated with the frequency of RAI (p = 0.15-0.93). The individual radiologist and technologist influenced the frequency of RAI for US examinations, whereas other examination-related factors did not. The observed substantial variability in RAI between radiologists and technologists warrants further study, with consideration of strategies to optimize RAI within US reports. © 2015 Wiley Periodicals, Inc.

  5. [Strategies to Cope with the Shortage of Technologists: Facing the Mass-Retirement of the 'Baby-Boomer' Generation].

    Science.gov (United States)

    Morikane, Keita; Yamada, Miyuki

    2015-03-01

    In Japan, the primary 'baby-boomer' generation, born between 1947 and 1949, is now in its retirement. This has caused a marked shortage of human resources nationwide. Clinical laboratory technologists are no exception, and many clinical laboratories in Japanese healthcare facilities are struggling with management because the number of new graduates, i.e., newly licensed technologists, is mostly fixed and, therefore, their recruitment is becoming more and more competitive. Our laboratory is now facing a wave of mass-retirement associated with our history. In addition, in the early 2000s, there was almost no position for new graduates replacing those retiring because of the change in the social healthcare system as well as our hospital's policy. This resulted in uneven numbers of technologists in generations, and it seemed to be getting worse. Fortunately, five years ago, the direction of social health care was changed and lots of positions became available as a result. We have been trying to recruit new graduates and experienced technologists as well, and were able to hire 18 people. Among them, 8 were non-freshmen. The generation gap has been mostly resolved. We will continue to make our laboratory more attractive not just to new graduates but also to experienced technologists, especially those who wish to return to work after a several-year absence to raise their children. We believe that this will energize our laboratory.

  6. [Problems in career planning for novice medical technologists in Japanese national hospitals].

    Science.gov (United States)

    Ogasawara, Shu; Tsutaya, Shoji; Akimoto, Hiroyuki; Kojima, Keiya; Yabaka, Hiroyuki

    2012-12-01

    Skills and knowledge regarding many different types of test are required for medical technologists (MTs) to provide accurate information to help doctors and other medical specialists. In order to become an efficient MT, specialized training programs are required. Certification in specialized areas of clinical laboratory sciences or a doctoral degree in medical sciences may help MTs to realize career advancement, a higher earning potential, and expand the options in their career. However, most young MTs in national university hospitals are employed as part-time workers on a three-year contract, which is too short to obtain certifications or a doctoral degree. We have to leave the hospital without expanding our future. We need to take control of our own development in order to enhance our employability within the period. As teaching and training hospitals, national university hospitals in Japan are facing a difficult dilemma in nurturing MTs. I hope, as a novice medical technologist, that at least university hospitals in Japan create an appropriate workplace environment for novice MTs.

  7. Study on the usefulness of whole body SPECT coronal image, MIP image in {sup 67}Ga scintigraphy

    Energy Technology Data Exchange (ETDEWEB)

    Kawamura, Seiji [Kurume Univ., Fukuoka (Japan). Hospital; Ishibashi, Masatoshi; Kurata, Seiji; Morita, Seiichirou; Hayabuchi, Naofumi [Kurume Univ., Fukuoka (Japan). School of Medicine; Fukushima, Shigehiro [Kyushu Inst. of Design, Fukuoka (Japan). Graduate School of Auditory and Visual Communication Sciences; Umezaki, Noriyoshi [Daiichi Coll. of Pharmaceutical Sciences, Fukuoka (Japan)

    2002-05-01

    In this study, we examined the usefulness of whole body coronal images and whole body cine display MIP images (CMIP) upon which image processing was carried out after whole body SPECT in comparison to the usefulness of whole body images (WB/SC) compensated by scattered radiation in tumor/inflammation scintigraphy with {sup 67}Ga-citrate ({sup 67}Ga). Image interpretation was performed for the 120 patients with confirmed diagnoses, and the accuracy of their diagnoses was studied by three nuclear medical physicians and two clinical radiological technologists by means of sensitivity, specificity and ROC analysis. The resultant data show that sensitivity, specificity, accuracy and the area under the ROC curve Az in the WB/SC were approximately 65%, 86%, 74% and 0.724, respectively, whereas sensitivity, specificity, accuracy and Az of the image reading system in which CMIP is combined with whole body coronal images reconstructed by the OS-EM method were approximately 93%, 95%, 94% and 0.860, respectively. Furthermore, coronal images reconstructed by the OS-EM method tended to be superior to those produced by the FBP method in both diagnostic accuracy and ROC analysis. In conclusion, the image reading system in which CMIP is combined with whole body coronal images reconstructed by the OS-EM method was shown to be superior in diagnostic accuracy and ROC analysis. Our data suggest that whole body SPECT is an excellent technique as an alternative to WB/SC. (author)

  8. Nuclear medicine in cardiology

    Energy Technology Data Exchange (ETDEWEB)

    Torizuka, K.; Ishii, Y.; Yonekura, Y.; Yamamoto, K.; Tamaki, N. (Kyoto Univ. (Japan). Faculty of Medicine)

    1981-02-01

    Nuclear medicine in cardiology was reviewed. Electrocardiogram is obtained from the ..gamma..-ray measurement of a tracer by a single detector, which enables a bedsidemonitoring. Resolution and sensitivity are high and nuclear stethoscope with a computer is applicable for a background treatment. Myocardium is imaged by /sup 201/Tl scintigraphy. Relative difference of the perfusion indicates the ischemia which gaives roughly the size and portion of myocardial infarction. For transient ischemia stress myocardial perfusion imaging (SMPI) is also used. sup(99m)Tc pyrophosphate provides a clear image for myocardial infarction. Angiocardiogram is obtained repeatedly, by a single administration, using an equilibrium method. An attempt of three-dimensional display by 7 pin hole collimator and positron CT are also discussed.

  9. 99mTc-MDP bone scintigraphy findings representing osteoporosis

    International Nuclear Information System (INIS)

    Nam, Dae Gun; Moon, Tae Geon; Kim, Ji Hong; Son, Seok Man; Kim, In Ju; Kim, Yong Ki

    2001-01-01

    Bone scintigraphy with 99m Tc-labeled phosphates is one of the most common procedures in evaluation of various skeletal disorders. Metabolic bone diseases show involvement of the whole skeleton and are associated with increased bone turnover and increased uptake of 99m Tc-labeled phosphates. In this study, we investigated apparently normal women who were examined with routine bone scintigraphy applied bone densitometry to correlate it with skeletal uptake in bone scan. This study includes 79 women who were performed both of bone mineral density(BMD) and bone scintigraphy. We investigated the relation of bone scan findings and BMD of lumbar, femur, radius. Regional BMD were negatively correlated with increased age. Among the bone scintigraphy findings representing metabolic bone disease, uptakes by the long bones, skull and mandible increased with age in women, while that in the costochondral junction decreased. Increased skull and mandible uptakes is associated with decreased BMD, and it has statistically significance. Our results show that increased radionuclide uptake in bone scintigraphy, especially skull and mandible uptake was associated with decreased lumbar, femur BMD in women. So that, increased skull and mandible uptake in women would be a scintigraphic sign of osteopenia or osteoporosis

  10. Risk-benefit of dipyridamole loading thallium-201 myocardial scintigraphy

    International Nuclear Information System (INIS)

    Ueshima, Kenji; Ogiu, Naonori; Musha, Takehiko; Moriai, Naoki; Miyakawa, Tomohisa; Nakai, Kenji; Hiramori, Katsuhiko

    1995-01-01

    This study assessed the accuracy of dipyridamole-stressed thallium-201 scintigraphy in the detection of myocardial ischemia, as well as the associated complications and their background factors. Fifty consecutive patients (33 men and 17 women; a mean age of 67 years) unable to undergo exercise thallium imaging were examined. R waves on resting ECG, the occurrence of ischemic changes on exercise ECG, asynergy on left ventriculography and dobutamine-stressed two-dimensional echocardiography, uptake of FEG on PET, and coronary angiographic findings were comprehensively assessed to determine the accuracy of the present scintigraphy. The sensitivity, specificity, accuracy, positive predictive value, and negative predictive value were 60.4%, 94.2%, 89.7%, 83.0%, and 82.9%, respectively. These findings yielded satisfactory detectability of dipyridamole-stressed thallium-201 scintigraphy for myocardial ischemia. The present scintigraphy had a high sensitivity and specificity for the left anterior descending artery; however, it had a high specificity but low sensitivity for the other arteries. A majority of complications during the scintigraphy was transient, mild decrease in blood pressure, which was found especially when ischemia was present in the left circumflex artery and chest pain occurred during dipyridamole stress. Dipyridamole stress is considered to be contraindicated for patients with unstable angina. (N.K.)

  11. Clinical diagnostic potentials of thyroid ultrasonography and scintigraphy; An evaluation

    Energy Technology Data Exchange (ETDEWEB)

    Torizuka, Tatsuo; Kasagi, Kanji; Hatabu, Hiroto; Misaki, Takashi; Iida, Yasuhiro; Konishi, Junji (Kyoto Univ. (Japan). Hospital); Endo, Keigo

    1993-06-01

    This prospective study was designed to evaluate the potential contributions of high resolution ultrasonography (US) and Tc-99m scintigraphy in the routine diagnosis of thyroid disease. The diagnostic impacts of US and Tc-99m scintigraphy results in 177 patients visiting our thyroid clinic were assessed and scored according to the following criteria: when the information provided by either test supported, confirmed or changed the initial clinical diagnosis, they received scores of 2, 3 and 4 respectively, while score 1 was given when the test itself was useless for the differential diagnosis. US identified focal lesions that both palpation and scintigraphy had failed to detect in 14 (12.1%) of 116 patients with diffuse thyroid diseases, suggesting the necessity of Hashimoto's thyroiditis, adenoma, adenocarcinoma and adenomatous goiter, and vice versa in the diagnosis of hyperthyroid and euthyroid Graves's diseases. Thus, the advantages of US over scintigraphy for morphological evaluation were confirmed. US was particularly useful for the differential diagnosis of adenomatous goiter from Hashimoto's thyroiditis or a single nodular disease. In contrast, scintigraphy gave functional images, being especially helpful for the differential diagnosis of thyrotoxicosis. (author).

  12. Medical image transmission via communication satellite. Evaluation of bone scintigraphy

    International Nuclear Information System (INIS)

    Suzuki, Hideki; Inoue, Tomio; Endo, Keigo; Shimamoto, Shigeru.

    1995-01-01

    As compared with terrestrial circuits, the communication satellite possesses superior characteristics such as wide area coverage, broadcasting, high capacity, and robustness to disasters. Utilizing the narrow band channel (64 kbps) of the geostationary satellite JCSAT 1 located at the altitude of 36,000 km above the equator, the authors investigated satellite-relayed medical imagings by video signals, with bone scintigraphy as a model. Each bone scintigraphy was taken by a handy-video camera, digitalized and transmitted from faculty of technology located at 25 kilometers apart from our department. Clear bone scintigraphy was obtained via satellite, as seen on the view box. Eight nuclear physicians evaluated 20 cases of bone scintigraphy. ROC (Receiver Operating Characteristic) analysis was performed between the scintigraphies on view box and via satellite by the rating method. The area under the ROC curve was 91.6±2.6% via satellite, and 93.2±2.4% on the view box and there was no significant difference between them. These results suggest that the satellite communication is very useful and effective system to send nuclear imagings to distant institutes. (author)

  13. [Medical image transmission via communication satellite: evaluation of bone scintigraphy].

    Science.gov (United States)

    Suzuki, H; Inoue, T; Endo, K; Shimamoto, S

    1995-10-01

    As compared with terrestrial circuits, the communication satellite possesses superior characteristics such as wide area coverage, broadcasting, high capacity, and robustness to disasters. Utilizing the narrow band channel (64 kbps) of the geostationary satellite JCSAT1 located at the altitude of 36,000 km above the equator, the authors investigated satellite-relayed medical images by video signals, with bone scintigraphy as a model. Each bone scintigraphy was taken by a handy-video camera, digitalized and transmitted from faculty of technology located at 25 kilometers apart from our department. Clear bone scintigraphy was obtained via satellite, as seen on the view box. Eight nuclear physicians evaluated 20 cases of bone scintigraphy. ROC (Receiver Operating Characteristic) analysis was performed between the scintigraphies on view box and via satellite by the rating method. The area under the ROC curve was 91.6 +/- 2.6% via satellite, and 93.2 +/- 2.4% on the view box and there was no significant difference between them. These results suggest that the satellite communication is very useful and effective system to send nuclear imagings to distant institutes.

  14. Bone marrow scintigraphy in hemopoietic depletion states

    International Nuclear Information System (INIS)

    Fortynova, J.; Bakos, K.; Pradacova, J.

    1981-01-01

    Bone marrow scintigraphy was performed in 29 patients with hemopoietic depletion states of various etiology. Two tracers were used for visualization, viz., sup(99m)Tc-sulfur-colloid and 111 InCl 3 ;some patients were examined using both indicators. 111 InCl 3 is bound to transferrin and is adsorbed on the surface of reticulocytes and erythroblasts. A scintillation camera PHO GAMMA SEARLE IV fitted with a moving table and computer CLINCOM were used to obtain whole-body images. The comparison of all scans and marrow puncture smears was done. In patients with aplastic anemia with both hyperplastic or hypoplastic marrow good correlation of bone marrow scans and sternal puncture smears was found. In several cases the scintigraphic examination helped to establish the diagnosis of marrow depletion. A peculiar disadvantage of the imaging method with either sup(99m)Tc-sulfur-colloid or 111 InCl 3 is that it shows the disorders in erythropoietic and reticuloendothelial cells whereas the defects in myelopoietic cell series and platelet precursors are not provable. According to literature data, great attention is paid to the prognostic value of scintigraphic examination in aplastic anemia. (author)

  15. Bone marrow scintigraphy in hemopoietic depletion states

    Energy Technology Data Exchange (ETDEWEB)

    Fortynova, J. (Ustav Hematologie a Krevni Transfuze, Prague (Czechoslovakia)); Bakos, K.; Pradacova, J. (Karlova Univ., Prague (Czechoslovakia). Biofyzikalni Ustav)

    1981-01-01

    Bone marrow scintigraphy was performed in 29 patients with hemopoietic depletion states of various etiology. Two tracers were used for visualization, viz., sup(99m)Tc-sulfur-colloid and /sup 111/InCl/sub 3/; some patients were examined using both indicators. /sup 111/InCl/sub 3/ is bound to transferrin and is adsorbed on the surface of reticulocytes and erythroblasts. A scintillation camera PHO GAMMA SEARLE IV fitted with a moving table and computer CLINCOM were used to obtain whole-body images. The comparison of all scans and marrow puncture smears was done. In patients with aplastic anemia with both hyperplastic or hypoplastic marrow good correlation of bone marrow scans and sternal puncture smears was found. In several cases the scintigraphic examination helped to establish the diagnosis of marrow depletion. A peculiar disadvantage of the imaging method with either sup(99m)Tc-sulfur-colloid or /sup 111/InCl/sub 3/ is that it shows the disorders in erythropoietic and reticuloendothelial cells whereas the defects in myelopoietic cell series and platelet precursors are not provable. According to literature data, great attention is paid to the prognostic value of scintigraphic examination in aplastic anemia.

  16. Visualization of female breast in bone scintigraphy

    International Nuclear Information System (INIS)

    Uno, Kimiichi; Uchida, Yoshitaka; Sakata, Shouichi

    1992-01-01

    Breast cancer incidence rates in Japan has more than doubled in the decade between 1975 and 1985 due to a well-established and affluent Western life-style. One hundred patients having breast cancer, 107 patients having mastectomies, and 243 patients having no breast cancer were reviewed for whole body and spot views of bone scintigraphy with 99m Tc-MDP. The frequency of positive breast uptake in patients with no breast cancer showed a maximum in those patients between the ages of 30 and 40, with a progressive rise and fall before and after the peak, respectively. Patients between the ages of 50 and 60 with breast cancer showed a maximum uptake of 83%, while those patients between the ages of 70 and 80 with breast cancer showed an uptake higher than 50%. There was a markedly higher breast uptake ratio in the breast cancer group compared to the breast cancer free group. Although this scanning agent was of no value in recognition of tumor localization from breast uptake, we have to suspect a high incidence of cancer existence whenever there was unilateral increased breast activity. Even though the mechanism of 99m Tc-MDP uptake by breast tissue is unknown, breast concentration of 99m Tc-MDP appears to be influenced by hormones, especially estrogen. (author)

  17. Stress myocardial scintigraphy in coronary artery disease

    International Nuclear Information System (INIS)

    Hata, Noritake; Koumi, Shin-ichi; Yasutake, Masahiro; Imaizumi, Takahiro; Saito, Tsutomu; Kishida, Hiroshi; Hayakawa, Hirokazu

    1991-01-01

    To evaluate the clinical significance of asymptomatic ischemic heart disease, exercise electrocardiography and stress myocardial scintigraphy were performed. These were correlated with symptoms during exercise tests and histories of myocardial infarction (MI). The study subjects consisted of 70 patients with coronary artery disease, including 34 with MI, and 36 without MI but with angina pectoris. Stress tests were performed using bicycle ergometer under electrocardiographic monitoring throughout the test. Transient myocardial ischemia was confirmed by perfusion defects on thallium myocardial imaging demonstrated immediately after exercise, but not 3 hours after the stress test. Asymptomatic ST depression was observed in 18 of 34 patients with MI (53%) and in 21 of the 36 patients with angina (58%); however, transient myocardial perfusion defects were confimred in 61% of the patients with MI (11 of 18 patients), but in only 33% of those with angina (7 of 21 patients). The difference was statistically significant (p<0.05). It was suggested that there are some differences in the clinical significance of asymptomatic ST depression between the patients with MI and those without MI but with angina pectoris. (author)

  18. Incidental Hiatal Hernia Detected with Meckel's Scintigraphy

    International Nuclear Information System (INIS)

    Aksoy, Tamer; Kiratli, Pinar Ozgen

    2011-01-01

    Congenital hiatal hernia (CHH) in children is a very rare condition that occurs in about 1 in every 2,000 to 5,000 live births, with a male to female ratio of 2:3. In 97% of cases the anomaly is unilateral with a left side preponderance. The hernia content can include the stomach, bowel loops, spleen or part of the liver. CHH may remain asymptomatic or induce only nonspecific gastro intestinal and/or thoracic symptoms. The symptomatology og these patients is usually non specific, in the form of repeated attacks of chest infection and/or recurrent vomiting, but can be associated with serious complications such as intrathoracic gastric volvulus with incarceration and strangulation. Because of the gastroesophageal reflux, linear ulcerations on the esophageal mucosa might occur and cause intermittent bleeding. Plan chest radiographs, AP and lateral, may raise a suspicion of the condition, while upper gastrointestinal contrast series are diagnostic. The treatment is surgery consisting of excision of the hernial sac after reducing the stomach and repair of the diaphragmatic defect by tightening the crura of the esophageal hiatus. If the defect is large and associated with displacement of the gastroesophageal junction (GEJ) into the thorax, adding an anti reflux procedure to the repair is appropriate. This can be achieved transabdominally either by laparotomy or laparoscopically. To the best of our knowledge, this is the second case diagnosed with Meckel's scintigraphy.

  19. The role of skeletal scintigraphy in nuclear oncology at a medium-sized hospital in South Korea

    International Nuclear Information System (INIS)

    Choe, W.

    2004-01-01

    Full text: Skeletal scintigraphy (SS) has been a workhorse in nuclear medicine departments, whether the department is in a developed country or in a developing country. It also plays an essential role in nuclear oncology in staging or diagnosing cancers or monitoring management of cancer patients. With the availability of improved imaging modalities like positron emission tomography, the role of skeletal scintigraphy is changing accordingly. This study was performed to evaluate the role of SS in nuclear oncology at a medium-sized (900-bed) university hospital in South Korea, by reviewing hospital cases along with the statistics of recently published papers in the journal of Clinical Nuclear Medicine. The hospital does not have a PET. The study period was three years (from 2000 to 2002). The SS is requested from many specialties for various reasons. Only cancer-related cases were selected. Using PubMed database, relevant articles in the Clinical Nuclear Medicine were assessed. To retrieve the articles, the keywords 'skeletal scintigraphy' and 'bone scan' were combined by using Boolean operation. There were a total of 9707 SS out of 16429 nuclear medicine imaging cases at the hospital during the study period. The hospital had 49% of SS contributed to cancer patients, while 52% percent of the SS in the CNM dealt with cancers. During the same period, articles regarding PET were 273 of which 171 were cancer-related PET studies (62%, more often than SS). 59% of the total nuclear medicine studies performed at the hospital were SS, whereas only 9% of the total articles were SS and 5% dealt with cancer-related cases. The cases of SS and cancer-related SS at the hospital increased during the period, whereas the articles in the CNM decreased. Analytic statistics were not considered necessary. In conclusion, there is an increasing demand of SS in nuclear oncology at a medium-sized hospital with non-availability of PET and the proportions of SS and cancer-related SS to the

  20. [Career planning for explanation of clinical test results and program of inspections: developing medical technologists for team medical care].

    Science.gov (United States)

    Uchida, Misuko

    2013-04-01

    Current medical care is subdivided according to medical advances, and sophistication and new techniques are necessary. In this setting, doctors and nurses have been explaining to and consulting patients about their medical examinations; however, in recent years, medical technologists have performed these duties at the start of the team's medical care. Therefore, we think it is possible for patients to receive clear and convincing explanations. Most patients cannot understand their examination data, which are written using numbers and charts, etc. Recently, the Nagano Medical Technologist Society has been developing technologists who could explain examination results to patients. This development training included hospitality and communication. The certificate of completion will be issued in March when the program starts.

  1. Scintigraphy usefulness in the diagnosis of visceral candidiasis

    International Nuclear Information System (INIS)

    Ythier, H.; Legghe, R.; Foucher, C.

    1987-01-01

    From the features of two cases, the authors stress the usefulness of the scintigraphy as regards to the diagnosis of visceral candidial abscesses. Such fungal localisations are not unfrequent, especially in immunodeficient patients (haematologic malignancies undergoing chemotherapy, lupus, serious visceral illness...). The positive diagnosis is uneasy because of non-specific clinical features and frequent negative blood cultures. Splenic localisation is the most likely. Citrate Gallium scintigraphy together with splenic labelled RBC scan enables us to give a precise view of the splenic involvment and even of the abdominal extension of the fungal abscess. From the literature review and these two cases, the excellent adequacy of the scintigraphy to the follow-up of systemic candidiasis is underlined and is compared to other usual morphological studies such as US scan and CT examination. In both cases, the diagnosis is fully confirmed by mycological examination [fr

  2. AIDS-related Kaposi sarcoma: findings on thallium-201 scintigraphy

    International Nuclear Information System (INIS)

    Lee, V.W.; Rosen, M.P.; Baum, A.; Cohen, S.E.; Cooley, T.P.; Liebman, H.A.

    1988-01-01

    No simple, noninvasive method is available for evaluating extracutaneous Kaposi sarcoma in AIDS patients or for following the tumor's response to treatment. We report our preliminary experience with thallium-201 scintigraphy in nine AIDS patients with proved Kaposi sarcoma. Eight of the nine had abnormal uptake of the radionuclide in skin, lymph nodes, oral cavity, vagina, and lungs. Only four of the nine had cutaneous Kaposi sarcoma at the time of scanning. All cutaneous and mucosal lesions were thallium avid. Two of the six patients with thallium-avid nodes underwent nodal biopsy. Both biopsies confirmed the diagnosis of Kaposi sarcoma. Cutaneous Kaposi sarcoma developed later in one of these patients, showing the efficacy of thallium scintigraphy for the early detection of extracutaneous lesions. These preliminary results show thallium avidity in Kaposi sarcoma involving the skin and various extracutaneous sites (lymph nodes, lung, mucosa, and vagina). Thallium scintigraphy is a potentially useful procedure for detecting extracutaneous Kaposi sarcoma in AIDS patients

  3. I-123 IMP brain scintigraphies in asphyxiated newborns

    International Nuclear Information System (INIS)

    Maeda, Hisatoshi; Konishi, Yukuo; Kuriyama, Masanori; Ishii, Yasushi; Sudo, Masakatsu

    1987-01-01

    Brain scintigraphies with N-Isopropyl (I-123) p-Iodoamphetamine (I-123 IMP) were conducted in eight patients who had asphyxia at the time of birth. Two patients, 15 and 26 year-old, had local defects and diffuse low cerebral uptakes. Two children, 70 day and 2 year-old, had no cerebral uptake. Brain scintigraphies were carried out twice in three among four newborns. Only slight I-123 IMP brain uptakes were observed in the first 10 days. The lateral views of the brain scintigraphies showed increased uptake in the middle region of the brain between 10 to 30 days and reached almost equally distributed in frontal, middle and posterior regions after 30 days. These results were thought to represent rather developmental changes of the cerebral blood flow after ischemic attacks at birth. (author)

  4. Comparison of CT and scintigraphy in diseases of the liver

    International Nuclear Information System (INIS)

    Wenig, H.G.; Wegener, O.H.; Souchon, R.; Ziegler, U.; Koppenhagen, K.

    1979-01-01

    Sixty-five patients with various diseases of the liver were examined by CT and scintigraphy. We found the following preliminary conclusions: diffusely infiltrative and hepatocellular diseases of the liver, espacially cirrhosis, are recognized on CT by shape and contour rather than by density values. In these cases, scintigraphy provides important information about the function of the parenchyma. In space-occupying processes, a close correlation exists between CT and scintigraphy. In the investigation of liver metastases in advanced stages, CT and radionuclide studies proved to be nearly identical in accuracy. The advantages of CT consist in the possibility of showing more morphologic detail of adjacent organs and in possessing better spatial resolution. (orig.) 891 MG/orig. 892 MB [de

  5. In-111-labeled leukocyte scintigraphy in postoperative joint infection

    International Nuclear Information System (INIS)

    Ogawa, Yoji; Uetani, Masataka; Aziz, A.; Hayashi, Kuniaki

    2000-01-01

    To evaluate the role of In-111-labeled leukocyte scintigraphy in the patients with suspected postoperative joint infection, 41 scintigraphic examinations were performed in 24 patients. Scintigrams were interpreted by the degree of accumulation of labeled leukocytes, and were classified into 3 groups: positive, intermediate, and negative. In the cases of positive leukocyte scans, definite diagnosis of infection was made in all cases except one. In the cases of negative scans, there was no evidence of infection. In 13 cases, leukocyte scintigrams were interpreted in conjunction with bone scintigrams. Definite diagnosis of infection was made in all of the cases with positive combined leukocyte/bone scan, and there was no evidence of infection in cases with negative combined leukocyte/bone scan. This study demonstrates that In-111-labeled leukocyte scintigraphy is a useful method in diagnosis of postoperative joint infection, and accuracy of the examination improves when combined with bone scintigraphy. (author)

  6. Scintigraphy usefulness in the diagnosis of visceral candidiasis

    Energy Technology Data Exchange (ETDEWEB)

    Ythier, H; Legghe, R; Foucher, C

    1987-01-01

    From the features of two cases, the authors stress the usefulness of the scintigraphy as regards to the diagnosis of visceral candidial abscesses. Such fungal localisations are not unfrequent, especially in immunodeficient patients (haematologic malignancies undergoing chemotherapy, lupus, serious visceral illness...). The positive diagnosis is uneasy because of non-specific clinical features and frequent negative blood cultures. Splenic localisation is the most likely. Citrate Gallium scintigraphy together with splenic labelled RBC scan enables us to give a precise view of the splenic involvment and even of the abdominal extension of the fungal abscess. From the literature review and these two cases, the excellent adequacy of the scintigraphy to the follow-up of systemic candidiasis is underlined and is compared to other usual morphological studies such as US scan and CT examination. In both cases, the diagnosis is fully confirmed by mycological examination.

  7. Bronchial and pulmonary scintigraphy with radioactively marked aerosols

    International Nuclear Information System (INIS)

    Wuerstle, T.

    1982-01-01

    In 97 patients with bronchitis, bronchial asthma, tuberculosis, sarcoidosis, pneumoconiosis, or tumors the mucociliary clearance and/or deposit pattern after inhalation of radioactively marked aerosols (1 mCi 99m Tc sulfur colloid) was studied. Normal values of the mucociliary 30 min. clearance for the central bronchial/lung periphery are 21%/15%. There was a decreased clearance with bronchitis (11/8%), bronchial asthma, emphysema, tuberculosis, sarcoidosis, trachiobronchial amyloidosis, pleural scarring or interstitial pneumona. Increased clearance (29/19%) was shown with pneumoconiosis. The correlation of deposit pattern and disease, for example, bronchitis, bronchial asthma, bullous emphysema, pleural scarring, partial lung resection, bronchopneumonia, or bronchial restriction, is described. In comparison of aerosol scintigraphy to perfusion scintigraphy and ventilation with gaseous xenon, the aerosol scintigraphy is superior to xenon for certain indications. The aerosol particles, which are larger in comparison to xenon, settle easier by obstructions or flow variations and thereby give better clinical indications of regional differences. (orig.) [de

  8. Bone scintigraphy in a case of Ollier's disease

    Energy Technology Data Exchange (ETDEWEB)

    Otsuka, Nobuaki; Ito, Yasuhiko; Morita, Rikushi [Kawasaki Medical School, Kurashiki, Okayama (Japan)

    1983-11-01

    Bone scintigraphy with sup(99m)Tc-MDP was performed on a case with a Ollier's disease. Compared with Bone X-ray examinations, increased activity is noted in the ribs, hands (esp. left), left humerus, left tibia and left foot. Tumor scintigraphy with /sup 67/Ga-citrate shows slightly increased accumulation in comparison with sup(99m)Tc-MDP findings. However, apparent change was not noted compared with the previous scans. So, malignant change was negative. Malignant bone tumors usually show high activity, but some benign tumors also show high uptake. So, a differential diagnosis of bone disease using sup(99m)Tc-phosphorous compounds is occasionally difficult. In case of Ollier's disease, a follow-up bone scintigraphy is useful for evaluation of tumor growth, because malignant changes were accompanied by intensive uptake of sup(99m)Tc-MDP. Also, /sup 67/Ga-study is necessary for the differentiation of bone disease.

  9. [The scintigraphy of somatostatin receptors in the carcinoid tumor].

    Science.gov (United States)

    Banzo, J; Abós, M D; Prats, E; Delgado , M; Razola, P; García, S; Gomollón, F; García, F

    2001-02-01

    This study aimed to evaluate the diagnostic utility of 111In-DTPA-D-Phe1-octreotide scintigraphy in the different situations that can be present when an examination is requested during the clinical course of the carcinoid tumor (CT). We have performed 41 scintigraphies with 111In-octreotide (145-185 MBq) in 35 patients (19 females and 16 males) with clinically suspected or confirmed CT. The patients were classified into five groups: Group A: Indolent symptoms of CT (n=9); B: CT staging located in lung (n=4), stomach (n=2), cecum (n=1), thymus (n=1) and pancreas (n=1); C: Carcinoid syndrome (n=1); D: CT staging after surgery located in pancreas (n=1), ovary (n=1), cecum (n=1), stomach (n=1), appendix (n=1) and ileum (n=1); and E: Post-treatment follow-up (n=13), with CT located in bronchial tree (n=5), small intestine (n=3), appendix (n=2), thymus (n=1), ovary (n=1) and unknown primary tumor (n=1). Three patients of this group had one scintigraphic study before the treatment. Head and neck, thorax and abdomen images were obtained at 4 and 24 h in all of the patients and SPECT images of the abdomen (n=14), thorax (n=10), and brain (n=1) were obtained at 24 h in 25 patients. Group A: In the 3 patients with a positive scintigraphy, the definitive diagnosis was meningioma, Hurtle cell's carcinoma and lung adenocarcinoma. The clinical follow-up in the six other patients, at least during one year, did not show any evidence of CT. Group B: Six of the 9 CT were detected with the scintigraphy. In 2 cases of bronchial CT, the scan showed sarcoidotic regional lymph node involvement and CT hepatic and bone metastases, respectively. Group C: The scintigraphy detected hepatic metastases from an unknown primary tumor. Group D: The scintigraphy was positive in 3 cases (hepatic or/and abdominal metastases) and was normal in the other 3. The scintigraphy was negative in one patient with peritoneal metastases. Group E: The scintigraphy was normal in 7 patients in concordance with the

  10. The Study on Musculoskeletal Symptoms and it's Related Factors in Radio-Technologists

    International Nuclear Information System (INIS)

    Lee, Hyang Seob; Han, Man Seok

    2008-01-01

    In order to study the occurrence of symptoms of musculoskeletal disorders of radio-technologists employed at metropolitan general hospitals and the factors that influence such occurrence, standardized questionnaire by NIOSH that was modified and supplemented to be suitable for conditions in Korea was used. Answers collected from 143 radio-technologists in two weeks from June 13, 2007 were analyzed and the results are as follows. Factor that influence symptoms of musculoskeletal disorders by area were analyzed through multiple logistic regression analysis and the results found that in the neck area, risk increased as the burdening work category 2(Korea ministry of labor)(OR=3.94) and burdening work category 9(Korea ministry of labor)(OR=4.72) increased. In the shoulder region, risk increased as burdening work category 2(Korea ministry of labor)(OR=5.36), burdening work category 7(Korea ministry of labor)(OR=3.90), and burdening work category 9 (Korea ministry of labor)(OR=5.76) increased. In the arm/hand/wrist regions, risk increased as burdening work category 2 (Korea ministry of labor) (OR=6.91), and burdening work category 9 (Korea ministry of labor)(OR=3.76) increased. In the lower back region, risk increased as burdening work category 2 (Korea ministry of labor) (OR=3.06), and burdening work category 8 (Korea ministry of labor)(OR=8.14) increased. In the leg/knees/foot regions, risk increased as burdening work category 2 (Korea ministry of labor) (OR=3.63), and burdening work category 9 (Korea ministry of labor)(OR=2.96) increased. Conclusively, in factors that influence musculoskeletal disorder symptoms in radio-technologists, influence of subjective health conditions, total work experience, experience in current division, and burdening work category 2, 7, 8, and 9 (Korea ministry of labor) were most significant. Therefore, for preventive management, in addition to ergonomic and educational intervention for correcting improper posture during work, efforts for

  11. The Study on Musculoskeletal Symptoms and it's Related Factors in Radio-Technologists

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Hyang Seob; Han, Man Seok [Dept. of Radiology, Chungnam National University Hospital, Daejeon (Korea, Republic of)

    2008-09-15

    In order to study the occurrence of symptoms of musculoskeletal disorders of radio-technologists employed at metropolitan general hospitals and the factors that influence such occurrence, standardized questionnaire by NIOSH that was modified and supplemented to be suitable for conditions in Korea was used. Answers collected from 143 radio-technologists in two weeks from June 13, 2007 were analyzed and the results are as follows. Factor that influence symptoms of musculoskeletal disorders by area were analyzed through multiple logistic regression analysis and the results found that in the neck area, risk increased as the burdening work category 2(Korea ministry of labor)(OR=3.94) and burdening work category 9(Korea ministry of labor)(OR=4.72) increased. In the shoulder region, risk increased as burdening work category 2(Korea ministry of labor)(OR=5.36), burdening work category 7(Korea ministry of labor)(OR=3.90), and burdening work category 9 (Korea ministry of labor)(OR=5.76) increased. In the arm/hand/wrist regions, risk increased as burdening work category 2 (Korea ministry of labor) (OR=6.91), and burdening work category 9 (Korea ministry of labor)(OR=3.76) increased. In the lower back region, risk increased as burdening work category 2 (Korea ministry of labor) (OR=3.06), and burdening work category 8 (Korea ministry of labor)(OR=8.14) increased. In the leg/knees/foot regions, risk increased as burdening work category 2 (Korea ministry of labor) (OR=3.63), and burdening work category 9 (Korea ministry of labor)(OR=2.96) increased. Conclusively, in factors that influence musculoskeletal disorder symptoms in radio-technologists, influence of subjective health conditions, total work experience, experience in current division, and burdening work category 2, 7, 8, and 9 (Korea ministry of labor) were most significant. Therefore, for preventive management, in addition to ergonomic and educational intervention for correcting improper posture during work, efforts for

  12. Value of renal cortical scintigraphy in children with acute pyelonephritis

    International Nuclear Information System (INIS)

    Paul, A.K.; Miah, M.S.R.; Rahman, H.A.; Hasan, M.H.

    2004-01-01

    Purpose: Acute pyelonephritis is a major cause of morbidity in children with urinary tract infection and can result in irreversible renal scarring leading to hypertension and end-stage renal disease. Tc-99m-dimercaptosuccinic acid (DMSA) scintigraphy is the imaging modality of choice for the detection of acute pyelonephhfis and renal scarfing. This study evaluated the importance of renal cortical scintigraphy to identify children at risk from renal damage due to acute pyelonephritis. Methods: Forty-nine children (ages 9 months to 11 years) with urinary tract infection having positive urine culture were studied. A DMSA scan was performed within 72 hours of receiving antibiotic during acute infection. Single or multiple areas of varying degrees of diminished cortical uptake or diffusely decreased uptake in an enlarged kidney was considered for the diagnosis of acute pyelonephrifis. Follow-up scintigraphy was done at 6 months of initial scan in children with acute pyelonephritis documented by DMSA scan. Renal scarring was considered if the affected kidney shows cortical thinning or focal cortical defect with loss of volume or become small kidney. Children with known renal tract abnormalities were excluded from the study. RESULTS: Twenty-seven children (55%) wine considered acute pyelonephritis by DMSA scintigraphy and the abnormality was bilateral in 17(63%) cases and unilateral in 10(37%) cases. Among these 44 abnormal kidneys, scintigraphy showed solitary defect in 29 kidneys, multiple defects in 6 kidneys and diffuse decreased uptake in 9 kidneys. Of them, twenty children were available for follow-up evaluation and scintigraphy demonstrated complete recovery in 21 of 34 (62%) kidneys and renal scarfing in 13 of 34 (38%) kidneys. Renal scarring was found in 5 of 7 kidneys (71%) with diffuse decreased uptake, 2 of 5 kidneys (40%) with multiple cortical defect and 6 of 22 (27%) with single focal detect. Conclusion: The scintigraphic pattern of acute pyelonephritis

  13. Usefulness of {sup 99m}Tc-depreotide scintigraphy for the diagnosis of bone metastases in non-small cell lung cancer stage 3-4; Apport de la scintigraphie au {sup 99m}Tc-depreotide pour le diagnostic de lesions osseuses secondaires dans le cancer bronchopulmonaire non a petites cellules stade 3-4

    Energy Technology Data Exchange (ETDEWEB)

    Costo, S.; Dunet, V.; Agostini, D.; Bouvard, G. [CHU Cote de Nacre, Service de Medecine Nucleaire et Isotopes, 14 - Caen (France); Halley, A. [Centre Havrais d' Imagerie Nucleaire, 76 - Montivilliers (France); Bergot, E.; Porret, E.; Zalcman, G. [CHU Cote de Nacre, Service de Pneumologie, 14 - Caen (France)

    2009-02-15

    Objective In non-small cell lung cancer (NSCLC), metastatic bone involvement is usually assessed using conventional {sup 99m}Tc-HMDP bone scintigraphy, which has a high sensitivity but a poor specificity. The purpose of this study was to assess the usefulness of the {sup 99m}Tc-D scintigraphy for the detection of malignant bone metastases in patients with NSCLC stage III or IV and to compare these results with {sup 99m}Tc-HMDP bone scan findings. Methods Nineteen patients (13 M and 6 F, mean age 59 years) with proven NSCLC, suspected to have stage III or IV were enrolled prospectively. All patients underwent whole body {sup 99m}Tc-HMDP and {sup 99m}Tc-D scintigraphy to detect bone metastases within a mean interval of 14 days. Each focal uptake of {sup 99m}Tc-D or {sup 99m}Tc-HMDP was considered benign or malignant, leading to positive or negative diagnosis for bone involvement. The final diagnosis of bone metastases was established by a lung specialist, on the basis of additional imaging modalities and of 12 months follow-up. Results Twelve bone lesions were identified by {sup 99m}Tc-D scintigraphy, 10 were classified as bone metastases and two were classified as inflammatory bone lesions. Four patients were metastatic. Fifty eight bone lesions were detected by {sup 99m}Tc-HMDP scintigraphy, 26 of whom were considered malignant, eight patients were thus considered metastatic. Thereby, the two nuclear medicine modalities were concordant for 13 patients, that is 68% of cases and were discordant for six patients, representing 32% of cases. Diagnostic sensitivity, specificity and accuracy of depreotide scintigraphy and {sup 99m}Tc-HMDP bone scintigraphy were 75% for both, 93.3 and 73.3%, and 89.5 and 73.3% respectively. Conclusion Our data suggest that depreotide scintigraphy with the same sensitivity, a better accuracy and specificity than those of {sup 99m}Tc-HMDP bone scan can detect metastatic bone lesions in patients with NSCLC suspected to have stage III or IV

  14. Clinical experience of 123I-IMP scintigraphy in detecting vertebral bone metastases of hepatocellular carcinoma. A comparison with bone scintigraphy with 99mTc-MDP

    International Nuclear Information System (INIS)

    Suto, Y.; Iwamiya, T.; Tanigawa, N.; Shabana, M.; Ohta, Y.

    1994-01-01

    123 I-IMP and bone scintigraphy with 99m Tc-MDP were consecutively performed in patients with vertebral bone metastases from hepatocellular carcinoma and lumbar spondylosis deformans in a 7-day interval or shorter. The intensity of uptake was compared. Eighteen of the 20 metastatic lesions (90%) were classified as increased uptake areas in 123 I-IMP scintigraphy. MDP-scintigraphy disclosed 16 metastatic lesions (80%), 9 as ''hot'' lesions (56%) and 7 as ''cold'' lesions (44%). 123 I-IMP scintigraphy was negative in all 12 lesions of lumbar spondylosis deformans. Compared to MDP-scintigraphy, 123 I-IMP scintigraphy was more sensitive in detecting vertebral bone metastases of hepatocellular carcinoma with smaller rates of false-positive and false-negative findings. (orig./MG)

  15. Reliability of the American Academy of Sleep Medicine Rules for Assessing Sleep Depth in Clinical Practice.

    Science.gov (United States)

    Younes, Magdy; Kuna, Samuel T; Pack, Allan I; Walsh, James K; Kushida, Clete A; Staley, Bethany; Pien, Grace W

    2018-02-15

    The American Academy of Sleep Medicine has published manuals for scoring polysomnograms that recommend time spent in non-rapid eye movement sleep stages (stage N1, N2, and N3 sleep) be reported. Given the well-established large interrater variability in scoring stage N1 and N3 sleep, we determined the range of time in stage N1 and N3 sleep scored by a large number of technologists when compared to reasonably estimated true values. Polysomnograms of 70 females were scored by 10 highly trained sleep technologists, two each from five different academic sleep laboratories. Range and confidence interval (CI = difference between the 5th and 95th percentiles) of the 10 times spent in stage N1 and N3 sleep assigned in each polysomnogram were determined. Average values of times spent in stage N1 and N3 sleep generated by the 10 technologists in each polysomnogram were considered representative of the true values for the individual polysomnogram. Accuracy of different technologists in estimating delta wave duration was determined by comparing their scores to digitally determined durations. The CI range of the ten N1 scores was 4 to 39 percent of total sleep time (% TST) in different polysomnograms (mean CI ± standard deviation = 11.1 ± 7.1 % TST). Corresponding range for N3 was 1 to 28 % TST (14.4 ± 6.1 % TST). For stage N1 and N3 sleep, very low or very high values were reported for virtually all polysomnograms by different technologists. Technologists varied widely in their assignment of stage N3 sleep, scoring that stage when the digitally determined time of delta waves ranged from 3 to 17 seconds. Manual scoring of non-rapid eye movement sleep stages is highly unreliable among highly trained, experienced technologists. Measures of sleep continuity and depth that are reliable and clinically relevant should be a focus of clinical research. © 2018 American Academy of Sleep Medicine

  16. Early 67Ga scintigraphy for the localization of abdominal abscesses

    International Nuclear Information System (INIS)

    Hopkins, G.B.; Kan, M.; Mende, C.W.

    1975-01-01

    Sixty patients suspected of having abdominal abscesses were evaluated by early and delayed 67 Ga scintigraphy. The 67 Ga scintigraphs obtained 6 hr after injection correctly localized 18 of 20 abdominal or retroperitoneal abscesses. An additional 13 patients with abnormal scintigraphs had clinically established infections. In no instance was an abscess or inflammatory focus present on delayed scintigraphs that was not evident on the 6-hr study. Two false-positive and two false-negative studies were recorded. Early 67 Ga scintigraphy is warranted in patients with suspected abdominal abscesses

  17. Dynamic scintigraphy of esophagus in gastroesophageal reflux patients

    International Nuclear Information System (INIS)

    Foltynova, V.; Brousil, J.; Belohlavek, O.; Rehak, F.; Pafko, P.

    1988-01-01

    Scintigraphic examination of esophagus was performed in 24 patients with clinical signs of gastroesophageal reflux (GER). The results were divided into five different types of clinical findings representing different disorders in esophageal motility. The results were compared with radiological examinations, pH-metry and endoscopy. Sensitivity of the scintigraphy was 94.1%, specificity 50%, and accuracy 89.5%. The results are much better than those of radiological examinations and are comparable with pH-metry. Esophageal scintigraphy a good noninvasive method providing information about the motility of the esophagus not obtainable with other methods. (author). 8 figs., 9 refs

  18. Availability of platelet scintigraphy for evaluation of arteriosclerosis obliterans

    International Nuclear Information System (INIS)

    Morimoto, Yoshihisa; Sugimoto, Takashi; Okada, Masayoshi; Mukai, Tomoichiro

    1998-01-01

    We reviewed the availability of platelet scintigraphy which can detect thrombotic activity to evaluate arteriosclerosis obliterans (ASO). During the past 13 months, 15 cases with ASO were studied. Among them, 6 cases (40%) showed acute aggravations of ischemic symptoms along with abnormal accumulation on scintigram. These cases have instantly more intensive antiplatelet and anticoagulant therapy, and obtained a remarkable recuperation together with disappearance of abnormal accumulation. In contrast, 9 cases without abnormal accumulation had a stable course without any ischemic complaints. In conclusion, platelet scintigraphy is very useful to evaluate the clinical effects of conservative or surgical therapy during the follow-up period in patients with ASO. (author)

  19. Reproducibility of esophageal scintigraphy using semi-solid yoghurt

    Energy Technology Data Exchange (ETDEWEB)

    Imai, Yukinori; Kinoshita, Manabu; Asakura, Yasushi; Kakinuma, Tohru; Shimoji, Katsunori; Fujiwara, Kenji; Suzuki, Kenji; Miyamae, Tatsuya [Saitama Medical School, Moroyama (Japan)

    1999-10-01

    Esophageal scintigraphy is a non-invasive method which evaluate esophageal function quantitatively. We applied new technique using semi-solid yoghurt, which can evaluate esophageal function in a sitting position. To evaluate the reproducibility of this method, scintigraphy were performed in 16 healthy volunteers. From the result of four swallows except the first one, the mean coefficients of variation in esophageal transit time and esophageal emptying time were 12.8% and 13.4% respectively (interday variation). As regards the interday variation, this method had also good reproducibility from the result on the 2 separate days. (author)

  20. Analysis of liver blood flow by dynamic hepatic scintigraphy

    International Nuclear Information System (INIS)

    Xie Tianhao; Jia Shiquan

    1996-01-01

    Liver blood flow was studied in 45 patients with solitary malignant liver cancer, 17 patients with multiple liver metastases, 18 patients with benign liver tumor and 20 control subjects by dynamic hepatic scintigraphy. The hepatic perfusion index (HPI) in control subjects, patients with liver malignant cancer and benign tumor was 0.33 +- 0.069, 0.589 +- 0.084, 0.384 +-0.046 respectively, and the mesenteric fraction (MF) was 0.56 +- 0.054, 0.246 +- 0.064, 0.524 +- 0.086 respectively. In conclusion, flow scintigraphy is a non-invasive, sensitive and repeatable method for detection of liver tumor

  1. Bone scintigraphy for horses; Die Skelettszintigrafie beim Pferd

    Energy Technology Data Exchange (ETDEWEB)

    Jahn, Werner [Pferdeklinik Bargteheide (Germany)

    2010-03-15

    Scintigraphy (bone scan) is being used approximately since 1980 in the horse under general anaesthesia. With the construction of custom-made overhead gantries for gamma-cameras scintigraphy found widespread entry in big equine referral hospitals for bone-scanning of the standing horse. Indications for the use of a bone scan in the horse are inflammatory alterations in the locomotor apparatus. It is primarily used for diagnosis of lameness of unknown origin, suspect of stress fracture or hairline fracture and for horses with bad riding comfort with suspected painful lesions in the spine. (orig.)

  2. 99mTc-sucralfate scintigraphy in inflammatory bowel disease

    International Nuclear Information System (INIS)

    Mortensen, P.B.; Lech, Y.; Moeller-Petersen, J.; Vilien, M.; Fallingborg, J.; Ekelund, S.

    1989-01-01

    Technetium-99m-labelled albumin-sucralfate was orally administered to 11 patients (Crohn's disease, 8; ulcerative colitis, 3) and 3 healthy volunteers. Serial scintigraphy was performed, and scintigraphic interpretations were compared with radiographic end endoscopic findings in an open study. It was not possible in any patient to relate the scintigraphic findings to the localizations of inflammatory bowel disease, nor was it possible to distinguish the scans in the patients from the scans of the healthy volunteers. It is concluded the 99m Tc-albumin-sucralfate scintigraphy is of no value in the detection of inflammatory bowel disease. 8 refs

  3. Dynamic gastroesophageal scintigraphy with 99mTc pyrophosphate

    International Nuclear Information System (INIS)

    Minchev, D.; Kovacheva, Yu.; Mlychkov, H.; Koev, A.

    1989-01-01

    Thirty two infants were examined by use of dynamic gastroesophageal scintigraphy and contrast X-ray for demonstrating gastroesophageal reflux. The radionuclide examination verified the gastro-duodenal reflux in 28 infants (87,5%), while the X-ray examination proved it in 18 (56,25%). Combined use of the two methods enhanced the positive results to 93,75%. Additional information was also obtained for the causes and complications of gastro-duodenal reflux. Dynamic gastro-esophageal scintigraphy is a practicable, noninvasive and physiological method with low radiation load for demonstration of gastro-esophageal reflux in infants

  4. Clinical value of renal images obtained incidentally to bone scintigraphy

    International Nuclear Information System (INIS)

    Ohishi, Y.; Machida, T.; Miki, M.; Kido, A.; Tanaka, A.

    1982-01-01

    Various studies were made on 400 renal (including 325 clinical cases) observed during whole-body bone scintigraphy using 99mTc-MDP. Asymmetrical renal images in bone scintigrams were obtained from 40% of the urologic patients and 7.5% of the nonurologic patients. Out of the asymmetrical images of the urologic patients, 50% provided nonvisualized kidneys and 35% showed unilateral renal high accumulation. It can be said from the above that renal images incidentally obtained during whole-body bone scintigraphy should not be overlooked

  5. Nuclear Medicine

    Science.gov (United States)

    ... Parents/Teachers Resource Links for Students Glossary Nuclear Medicine What is nuclear medicine? What are radioactive tracers? ... funded researchers advancing nuclear medicine? What is nuclear medicine? Nuclear medicine is a medical specialty that uses ...

  6. The present condition of the radiation safety control education in training schools for radiological technologists

    International Nuclear Information System (INIS)

    Takahashi, Yasuyuki; Saito, Kyoko; Hirai, Shoko; Igarashi, Hiroshi; Negishi, Tooru; Hirano, Kunihiro; Kawaharada, Yasuhiro

    2010-01-01

    We made a detailed study on the course of study in radiation safety control prescribed on March 28, 2003. Questionnaires were sent to 39 training schools for radiological technology, to which 66.7% replied (26/39). Subjects on radiation safety control must include knowledge and technology in both radiation control and medical safety. The contents for instruction of radiation control were in accordance with those given in the traditional program; however, some discrepancies were found in the contents of medical safety. As medical safety, emphasized by the revised Medical Service Law, is regarded as very important by many hospitals, safety control education that include medical ethics should be required as part of the curriculum in the training schools for radiological technologists. (author)

  7. Pregnant x-ray technologist: providing adequate radiation safety for the fetus

    International Nuclear Information System (INIS)

    Caprio, M.L. Jr.

    1980-01-01

    The human embryo-fetus is highly radiosensitive and must be protected from excessive exposure to ionizing radiation. The maximum permissible dose equivalent for the developing embryo-fetus is set at 0.5 rem per year - the MPD level for members of the general public. Methods by which supervisory personnel can limit the fetal dose incurred by the occupational exposure of the mother are presented. It is recommended that supervisory personnel attempt to limit occupational exposure to the current non-occupational MPD levels for all x-ray technologists, thereby, insuring that the fetal dose limits are not surpassed and providing an added safety factor for personnel by keeping exposures as low as reasonably achievable

  8. Image Gently: Challenges for radiologic technologists when performing digital radiography in children

    International Nuclear Information System (INIS)

    Goske, Marilyn J.; Smith, Susan N.; Charkot, Ellen; Herrmann, Tracy; John, Susan D.; Mills, Thalia T.; Morrison, Gregory

    2011-01-01

    The development of digital radiography (DR) has provided numerous benefits for pediatric imaging, including the ability to post-process images and to make images immediately available for access by care providers. However, DR presents several significant challenges for the radiologic technologists who are responsible for operating the equipment and producing high-quality images in children. This paper discusses those challenges, including lack of standardization among vendors, particularly with regard to the exposure indicator; lack of pediatric-specific educational materials and pediatric techniques; the need for manual technique instead of the use of automatic exposure control in smaller children; and complications related to field size, collimation and shielding in small children. Specific actions and design modifications that might facilitate the effective management of these challenges will be also described. The implementation of measures to promote the production of optimal images while minimizing radiation exposure requires cooperation and communication among imaging professionals, manufacturers and regulatory agencies. (orig.)

  9. The project management educational institution. A pedagogical model for the formation of competent technicians and technologists

    Directory of Open Access Journals (Sweden)

    Manuel Roberto Tolozano-Benites

    2016-09-01

    Full Text Available This paper presents some theoretical and methodological considerations that support a model of institutional educational management for the training of technicians and technologists in the Bolivarian technological Institute of technology (ITB, in the city of Guayaquil, Ecuador. It is considered that different versions of the educational project that have preceded the new proposal, lack of continuity and definition concrete categories that comprise it and the basic elements for practical operation during the management process. Of equal mode, not have favoured the concretion of a plan of development integral that exceed and transfer them borders of the positions academic individual of them managers institutional. The new model is comprised of different components in an organic integration and its application in practice takes place through an institutional educational project

  10. An autopsy case of peritoneal malignant mesothelioma in a radiation technologist

    International Nuclear Information System (INIS)

    Horie, Akio; Hiraoka, Katsumi; Yamamoto, Osamu; Haratake, Joji; Tsuchiya, Takehiko; Sugimoto, Hidekatsu.

    1990-01-01

    A case of peritoneal malignant mesothelioma in a radiation technologist, who had worked in this field for 34 years, is reported. Histopathologically, a biopsy specimen from the retroperitoneal tumor revealed a biphasic type of malignant mesothelioma. Electron microscopy disclosed that the tumor cells contained prominent microvilli, basal laminae adjacent to the stroma, junctional complexes, desmosomes, tonofilaments, clusters of glycogen granules, well developed rough endoplasmic reticulum (RER), confronting cisternae showing direct continuity with the RER and membrane-bound granules suggestive of secretory activity. No increased amount of asbestos was detected in autopsied lung material or the peritoneal mesothelioma. The estimated cumulative dose of occupational irradiation was calculated to be about 40 to 50 rad at most. Irradiation was discussed in relation to the etiology of the peritoneal mesothelioma. (author)

  11. OrdoCMN: a communication tool for nuclear medicine

    International Nuclear Information System (INIS)

    Lamy, P.; Bizollon, C.; Damien, J.; Itti, R.

    1997-01-01

    OrdoCMN is a computer software which offers an easy solution for the management of a nuclear medicine department. It has been developed using a data management tool: 4. Dimension. This network based software acts mainly as a communication tool between the various parts of the nuclear medicine department. It provides time saving and optimisation for the interdependent operations which are necessary when performing a scintigraphy study. In addition, it has all the functionalities which are needed to manage the data concerning a scintigraphy examination: study planing, patient files, radiopharmaceuticals prescription edition, labels and report printing, and radiopharmaceuticals management. Centered around the patient's file, it guaranties the confidentiality and security of the informations through several levels of security: passwords, data coding, etc. Since further evolution is specially easy, thanks to its modular structure, it may be adapted to the specific needs of any nuclear medicine department. (authors)

  12. Radionuclide Esophageal Transit Scintigraphy in Primary Hypothyroidism.

    Science.gov (United States)

    Khan, Shoukat H; P, Madhu Vijay; Rather, Tanveer A; Laway, Bashir A

    2017-01-30

    Esophageal dysmotility is associated with gastrointestinal dysmotility in various systemic and neuroregulatory disorders. Hypothyroidism has been reported to be associated with impaired motor function in esophagus due to accumulation of glycosaminoglycan hyaluronic acid in its soft tissues, leading to changes in various contraction and relaxation parameters of esophagus, particularly in the lower esophageal sphincter. In this study we evaluated esophageal transit times in patients of primary hypothyroidism using the technique of radionuclide esophageal transit scintigraphy. Thirty-one patients of primary hypothyroidism and 15 euthyroid healthy controls were evaluated for esophageal transit time using 15-20 MBq of Technetium-99m sulfur colloid diluted in 10-15 mL of drinking water. Time activity curve was generated for each study and esophageal transit time was calculated as time taken for clearance of 90% radioactive bolus from the region of interest encompassing the esophagus. Esophageal transit time of more than 10 seconds was considered as prolonged. Patients of primary hypothyroidism had a significantly increased mean esophageal transit time of 19.35 ± 20.02 seconds in comparison to the mean time of 8.25 ± 1.71 seconds in healthy controls ( P < 0.05). Esophageal transit time improved and in some patients even normalized after treatment with thyroxine. A positive correlation ( r = 0.39, P < 0.05) albeit weak existed between the serum thyroid stimulating hormone and the observed esophageal transit time. A significant number of patients with primary hypothyroidism may have subclinical esophageal dysmotility with prolonged esophageal transit time which can be reversible by thyroxine treatment. Prolonged esophageal transit time in primary hypothyroidism may correlate with serum thyroid stimulating hormone levels.

  13. Study of the personal radiation dose received by nuclear medicine technologists working in a dedicated PET centre

    International Nuclear Information System (INIS)

    Robinson, C.N.; Wallace, A.B.; Young, A.B.; Ibbetson, V.J.

    2005-01-01

    The use of dedicated PET scanners is becoming more widespread throughout Australia and the world. PET imaging utilises short-lived (-108 min), high-energy (511 keV) gamma-ray emitters, that could result in a high radiation dose being received by staff. As part of a larger staff and area monitoring project, this paper discusses the personal dose equivalent, H p (10), received by PET staff working in a dedicated PET centre. The typical H (10) received by staff was approximately 31 μSv. The average daily administered activity to patients at Austin Health was 1280 MBq

  14. 42 CFR Appendix D to Part 75 - Standards for Accreditation of Educational Programs for Nuclear Medicine Technologists

    Science.gov (United States)

    2010-10-01

    ...) Medical terminology; (5) Oral and written communications; (6) General chemistry; and (7) Medical ethics...) Laboratories; (d) Medical schools; (e) Postsecondary vocational/technical schools and institutions; and (f..., curriculum design, program planning, and counseling. (b) Medical Director—(1) Responsibilities. The medical...

  15. The Technologist Function in Fields Related to Radiology: Tasks in Radiation Therapy and Diagnostic Ultrasound. Research Report No. 9; Relating Technologist Tasks in Diagnostic Radiology, Ultrasound and Radiation Therapy. Research Report No. 10.

    Science.gov (United States)

    Gilpatrick, Eleanor

    The two research reports included in this document describe the application of the Health Services Mobility Study (HSMS) task analysis method to two technologist functions and examine the interrelationships of these tasks with those in diagnostic radiology. (The HSMS method includes processes for using the data for designing job ladders, for…

  16. Bone scintigraphy in the diagnosis of fracture and infection of the temporal bone

    International Nuclear Information System (INIS)

    Djupesland, G.; Nakken, K.F.; Mueller, C.; Skjoerten, F.; Roehrt, T.; Eldevik, P.

    1983-01-01

    The sensivit of Tc99m-MDP-bone-scintiscanning in the diagnosis of temporal bone fracture was found to that of conventional radiography if the patients were examined 10 days after the trauma. Temporal bone osteomyelitis with concomitant moderate osteosclerosis was demonstrated by bone scintigraphy in 5 cases of mastoiditis with atypical symptoms. A case of apicitis was for the first time demonstrated by scintigraphy. A low sensivity of 67 Ga-scintigraphy was demonstrated by positive Tc99m-bone-scintigraphy and negative 67 Ga-scintigraphy in a patient with atypical mastoiditis. Tc99m-scintigraphy was negative in 5 cases of otitis media suppurative and in 3 cases of otitis media chronica cum cholesteatoma, all with slight degree of osteosclerosis in the mastoid. The sensitivity of Tc99m-bone-scintigraphy in fracture and osteomyelitis of the temporal bone seems to be a function of the amount of reactive new bone formed. (Authors)

  17. Color blindness defect and medical laboratory technologists: unnoticed problems and the care for screening.

    Science.gov (United States)

    Dargahi, Hossein; Einollahi, Nahid; Dashti, Nasrin

    2010-01-01

    Color-blindness is the inability to perceive differences between some color that other people can distinguish. Using a literature search, the results indicate the prevalence of color vision deficiency in the medical profession and its on medical skills. Medical laboratory technicians and technologists employees should also screen for color blindness. This research aimed to study color blindness prevalence among Hospitals' Clinical Laboratories' Employees and Students in Tehran University of Medical Sciences (TUMS). A cross-sectional descriptive and analytical study was conducted among 633 TUMS Clinical Laboratory Sciences' Students and Hospitals' Clinical Laboratories' Employees to detect color-blindness problems by Ishihara Test. The tests were first screened with certain pictures, then compared to the Ishihara criteria to be possible color defective were tested further with other plates to determine color - blindness defects. The data was saved using with SPSS software and analyzed by statistical methods. This is the first study to determine the prevalence of color - blindness in Clinical Laboratory Sciences' Students and Employees. 2.4% of TUMS Medical Laboratory Sciences Students and Hospitals' Clinical Laboratories' Employees are color-blind. There is significant correlation between color-blindness and sex and age. But the results showed that there is not significant correlation between color-blindness defect and exposure to chemical agents, type of job, trauma and surgery history, history of familial defect and race. It would be a wide range of difficulties by color blinded students and employees in their practice of laboratory diagnosis and techniques with a potentially of errors. We suggest color blindness as a medical conditions should restrict employment choices for medical laboratory technicians and technologists job in Iran.

  18. Nuclear medicine training and practice in Turkey.

    Science.gov (United States)

    Ozcan, Zehra; Bozkurt, M Fani; Erbas, Belkıs; Durak, Hatice

    2017-05-01

    Nuclear medicine applications in Turkey started in the early 1950s, grew as an independent medical discipline and finally were recognized by the Ministry of Health in 1973. Later on, the professional organization of nuclear medicine physicians and other related professionals including radiopharmacists and technologists under the Turkish Society of Nuclear Medicine were established in 1975. Recently after completing more than a half century in Turkey, nuclear medicine has proved to be a strong and evolving medical field with more than 600 physicians serving for the changing needs of clinical practice throughout these years. This article describes past and present facts in this field and attempts to provide insights into the future which hopefully will be brighter than before.

  19. Nuclear medicine training and practice in Turkey

    Energy Technology Data Exchange (ETDEWEB)

    Ozcan, Zehra [Ege University School of Medicine, Department of Nuclear Medicine, Izmir (Turkey); Bozkurt, M. Fani; Erbas, Belkis [Hacettepe University School of Medicine, Department of Nuclear Medicine, Ankara (Turkey); Durak, Hatice [Dokuz Eyluel University School of Medicine, Department of Nuclear Medicine, Izmir (Turkey)

    2017-05-15

    Nuclear medicine applications in Turkey started in the early 1950s, grew as an independent medical discipline and finally were recognized by the Ministry of Health in 1973. Later on, the professional organization of nuclear medicine physicians and other related professionals including radiopharmacists and technologists under the Turkish Society of Nuclear Medicine were established in 1975. Recently after completing more than a half century in Turkey, nuclear medicine has proved to be a strong and evolving medical field with more than 600 physicians serving for the changing needs of clinical practice throughout these years. This article describes past and present facts in this field and attempts to provide insights into the future which hopefully will be brighter than before. (orig.)

  20. Nuclear medicine training and practice in Turkey

    International Nuclear Information System (INIS)

    Ozcan, Zehra; Bozkurt, M. Fani; Erbas, Belkis; Durak, Hatice

    2017-01-01

    Nuclear medicine applications in Turkey started in the early 1950s, grew as an independent medical discipline and finally were recognized by the Ministry of Health in 1973. Later on, the professional organization of nuclear medicine physicians and other related professionals including radiopharmacists and technologists under the Turkish Society of Nuclear Medicine were established in 1975. Recently after completing more than a half century in Turkey, nuclear medicine has proved to be a strong and evolving medical field with more than 600 physicians serving for the changing needs of clinical practice throughout these years. This article describes past and present facts in this field and attempts to provide insights into the future which hopefully will be brighter than before. (orig.)

  1. 76 FR 58520 - Proposed Collection; Comment Request; Cancer Risk in U.S. Radiologic Technologists: Fourth Survey...

    Science.gov (United States)

    2011-09-21

    ... carcinogenesis in women. The fourth survey will be administered by mail to approximately 93,000 living and... new cancers and other disease outcomes, detailed work patterns and practices from technologists who... following points: (1) Whether the proposed collection of information is necessary for the proper performance...

  2. Role of the technologist in the lymphoscintigraphy and the identification of sentinel node in malignant skin melanoma

    International Nuclear Information System (INIS)

    Barbier, D.

    2002-01-01

    The biopsy of the first tumor-draining lymph node (sentinel node) is bound to become the procedure of choice in regional staging of skin melanoma patients. In our department, we do successively: lymphoscintigraphy; identification of sentinel node by γ probe before surgery; identification during surgery of sentinel node with γ probe. During those different steps, the technologist has an important role. The different steps of the technologist's work are: Preparation of radiopharmaceutical Tc 99m Nanocolloides (Nanocis Cis Bio Int); Control of radio chemical purity(RCP) by thin-layer chromatography (TLC); Programming of acquisition protocol on the γ camera; Acquisition of dynamic and static images; Identification percutaneous of the sentinel node with the γ probe and Co 57 pencil; Processing of scintigraphic images; At least identification with surgeon of the sentinel node. After excision of the lymph node, we have to verify the disappearing of radioactivity. Those steps will be illustrated by different clinical cases. Conclusion: Sentinel node identification is: New useful technique for patient: not very much invasive; screening of patients with high risk factors; great parameters of prognosis; Interest for technologist: narrow collaboration with nuclearist and surgeon; psychological role close to the patient; various competency of technologist; diagnostic and therapeutic participations

  3. Analysis of the effect of leadership and organizational culture on the organizational effectiveness of radiological technologist's working environments

    International Nuclear Information System (INIS)

    Kim, J.H.; Kim, C.S.; Kim, J.M.

    2011-01-01

    Purpose: The purpose of this study was to present ideas to upgrade job performance and improve organizational management by analyzing leadership aspects and organizational cultures of radiological technologist organizations. Method: A questionnaire was used to collect data from 261 radiological technologists working in the city of Busan. Then, SPSS/PC + Win 13 was used to statistically analyze the collected data. One-way ANOVA was adopted to test differences among groups, and multiple regression analyses were conducted to examine the effect of organizational culture and leadership upon organizational effectiveness. Results: First, it was found that radiological technologists stressed consensus most among the 4 types of organizational culture and regarded core transformational leadership as the right type of leadership. Second, regarding the relationship between leadership and organizational effectiveness, transformational leadership had the highest influence upon organizational effectiveness. Third, as for the relationship between organizational culture and organizational effectiveness, it was found that a developmental culture has the highest influence upon organizational effectiveness, followed by a culture of consensus. Conclusion: If transformational leadership and consensual culture are used properly for upgrading job performance in the organization, conflicts among radiological technologists might be reduced, thereby enhancing organizational effectiveness.

  4. Analysis of the Importance of Subjects to Improve the Educational Curriculum in the Radiological Science: Focused on Radiological Technologists

    International Nuclear Information System (INIS)

    Kim, Jung Hoon; Ko, Seong Jin; Kang, Se Sik; Kim, Dong Hyun; Kim, Chang Soo

    2012-01-01

    In this study a group of experts and clinical radiological technologists were surveyed to evaluate the clinical importance of current subjects in the radiological sciences. For the data collection and analysis, an open-ended questionnaire was distributed to the group of experts, and a multiple choice questionnaire was distributed to radiological technologists. Subjects were classified into 9 groups for analysis of the importance of subjects, and in regard to the questionnaire design for measurement of variables, departments and type of hospital were set up as independent variables, and the 9 groups of subjects were set up as dependent variables. As a result, clinical radiological technologists perceived Diagnostic Imaging Technology and practical courses, including general radiography, CT and MRI, as the most clinically necessary subjects, and the group of experts placed most weight on basic courses for the major. The result of this study suggests that the curriculum should be revised in a way that combines theory and practice in order to foster radiological technologists capable of adapting to the rapidly changing healthcare environment.

  5. A Study to Determine the Educational Needs of Industrial Technologists in the Automotive-Type Manufacturing Industries.

    Science.gov (United States)

    Hall, Ronald Walter

    Questionnaires were used to gather data about educational needs of industrial technologists in the automotive-type manufacturing industries in the United States. Each of the 101 establishments received four questionnaires; 67 (66.3 percent) returned one or more of the questionnaires. The responses of the selected individuals were analyzed by…

  6. Clinical nuclear medicine applications in Turkey and specific renal studies

    International Nuclear Information System (INIS)

    Erbas, B.

    2004-01-01

    Full text: Nuclear cardiology, nuclear oncology, pediatric nuclear medicine and nuclear endocrinology are the main application areas of clinical nuclear medicine in Turkey. Not only imaging studies, but also therapeutic application of radiopharmaceuticals is also performed at many institutes, such as hyperthyroidism treatment with radioiodine, thyroid cancer ablation and metastases treatment with radioiodine, radio synovectomy, metastatic pain therapy, and recently radioimmunotherapy of lymphomas. Almost all radionuclides and radiopharmaceuticals are obtained commercially from European countries, except 18-FDG which is obtained from two cyclotrons in Turkey. More than 30.000 renal procedures are performed at the University hospitals in a year. Pediatric age groups is approximately % 55 of patients. 99mTc-DTPA (%44), 99mTc-DMSA (%37), 99mTc-MAG3 (%17) and 99mTc-EC (%2) are the most commonly used radiopharmaceuticals for renal imaging. More than 6.000 vials of several pharmaceuticals are used for renal cortical scintigraphy (%35), dynamic renal imaging (%34), renal scintigraphy with diuretic (%27) and captopril scintigraphy (%4). Most common indication for renal cortical scintigraphy is detection of cortical scarring (%53). In addition, using single plasma sample method or gamma-camera method renal clearance measurements with 99mTc-MAG3 99mTc-DTPA have been used at some institutions

  7. Clinical nuclear medicine applications in Turkey and specific renal studies

    International Nuclear Information System (INIS)

    Erbas, B.

    2004-01-01

    Nuclear cardiology, nuclear oncology, pediatric nuclear medicine and nuclear endocrinology are the main application areas of clinical nuclear medicine in Turkey. Not only imaging studies, but also therapeutic application of radiopharmaceuticals is also performed at many institutes, such as hyperthyroidism treatment with radioiodine, thyroid cancer ablation and metastases treatment with radioiodine, radio synovectomy, metastatic pain therapy, and recently radioimmunotherapy of lymphomas. Almost all radionuclides and radiopharmaceuticals are obtained commercially from European countries, except 18-FDG which is obtained from two cyclotrons in Turkey. More than 30.000 renal procedures are performed at the University hospitals in a year. Pediatric age groups is approximately % 55 of patients. 99m Tc-DTPA (%44), 99m Tc-DMSA (%37), 99m Tc-MAG3 (%17) and 99m Tc-EC (%2) are the most commonly used radiopharmaceuticals for renal imaging. More than 6.000 vials of several pharmaceuticals are used for renal cortical scintigraphy (%35), dynamic renal imaging (%34), renal scintigraphy with diuretic (%27) and captopril scintigraphy (%4). Most common indication for renal cortical scintigraphy is detection of cortical scarring (%53). In addition, using single plasma sample method or gamma-camera method renal clearance measurements with 99m Tc-MAG3 99m Tc-DTPA have been used at some institutions. (author)

  8. Nuclear Medicine Engineering

    International Nuclear Information System (INIS)

    Mateescu, Gheorghe; Craciunescu, Teddy

    2000-01-01

    'An image is more valuable than a thousand words' - this is the thought that underlies the authors' vision about the field of nuclear medicine. The monograph starts with a review of some theoretical and engineering notions that grounds the field of nuclear medicine: nuclear radiation, interaction of radiation with matter, radiation detection and measurement, numerical analysis. Products and methods needed for the implementation of diagnostic and research procedures in nuclear medicine are presented: radioisotopes and radiopharmaceuticals, equipment for in-vitro (radioimmunoassay, liquid scintillation counting) and in-vivo investigations (thyroid uptake, renography, dynamic studies, imaging). A special attention is focused on medical imaging theory and practice as a source of clinical information (morphological and functional). The large variety of parameters, components, biological structures and specific properties of live matter determines the practical use of three-dimensional tomographic techniques based on diverse physical principles: single-photon emission, positron emission, X-rays transmission, nuclear magnetic resonance, ultrasounds transmission and reflection, electrical impedance measurement. The fundamental reconstruction algorithms i.e., algorithms based on the projection theorem and Fourier filtering, algebraic reconstruction techniques and the algorithms based on statistical principles: maximum entropy, maximum likelihood, Monte Carlo algorithms, are depicted in details. A method based on the use of the measured point spread function is suggested. Some classical but often used techniques like linear scintigraphy and Anger gamma camera imaging are also presented together with some image enhancement techniques like Wiener filtering and blind deconvolution. The topic of the book is illustrated with some clinical samples obtained with nuclear medicine devices developed in the Nuclear Medicine Laboratory of the National Institute of Nuclear Physics and

  9. Nursing implications for Hepatic arterial perfusion scintigraphy

    International Nuclear Information System (INIS)

    Ellender, R.

    1999-01-01

    Nurses working in Nuclear Medicine assist in Hepatic Artery Catheter (HAC) perfusion studies. This scan is not widely performed in Australia, the St George hospital for example performs approximately five per year. The purpose of this article is firstly to review the indications and rationale of HAC patency studies. Secondly, this article will stress the clinical implications for the Nuclear Medicine Nurse during this study. Emphasis will be placed on the importance of patient education during the procedure. A brief overview of hepatic anatomy and the radiopharmaceuticals administered during the scan is discussed. Finally, a step by step protocol is presented to show how the perfusion/ shunt study is performed. Copyright (1999) The Australian and New Zealand Society of Nuclear Medicine Inc

  10. Effect of Garlic on Perfusion Scintigraphy of Rabbit's Lungs ...

    African Journals Online (AJOL)

    Purpose: To study of the effect of garlic on rabbit's lungs, with the aid of perfusion scintigraphy, after experimentally-induced pulmonary embolism. Methods: Twelve adult rabbits were anesthetized. Prepared macroaggregated albumin- technetium 99m (99mTc-MAA) radiopharmaceutical was injected into the ear vein at a ...

  11. Validity of 67Ga scintigraphy in patients with oral cancer

    International Nuclear Information System (INIS)

    Kanemura, Hironari; Kondoh, Toshirou; Hamada, Yoshiki; Nakajima, Toshifumi; Sekiya, Hideki; Ito, Ko; Sato, Junichi; Seto, Kanichi

    2003-01-01

    In this study, we investigated the diagnostic usefulness of 67 Ga scintigraphy in patients with oral cancer. Fifty-five patients with previously untreated oral cancer were administered in this study. The diagnostic accuracy of 67 Ga scintigraphy for primary cancer, cervical lymph node metastasis, systemic metastasis or double cancer were studied. The relations of the size of lesions to the diagnostic accuracy, and the degree of 67 Ga-citrate accumulation were analyzed. In addition, we discussed what makes it difficult to diagnose the lesions by using 67 Ga scintigrams. As a result, the sensitivity was 44.2% in primary cancer, 28.6% in cervical lymph node metastasis, and 25.0% in systemic metastasis or double cancer. It was suggested that 67 Ga scintigraphy is disadvantageous for the detection of small lesions. In this study, the relation between the size of lesions and the degree of 67 Ga-citrate accumulation was not clarified. The diagnostic problems of 67 Ga scintigraphy were found to be its low reliability in imaging of the lesion's localization, normal biodistribution and non-specific accumulation of 67 Ga-citrate. (author)

  12. Contribution to the study of thallium 201 myocardium scintigraphy

    International Nuclear Information System (INIS)

    Annweiler, Marc.

    1976-01-01

    In this work a new isotope was tested in the field of myocardium scintigraphy: thallium 201. The different radioisotopes used so far in myocardium scintigraphy are reviewed to begin with. The main biological and physical characteristics of thallium and the scintillation camera used for this work are described next. In our opinion thallium 201 owing to its biological behavior similar to that of potassium and to its physical characteristics, appears as one of the better -if not the best- known tracer suitable for use in myocardium scintigraphy. Its properties are suited to the use of a scintillation camera, which considerably shortens the examination time and thus allows an isotopic exploration of the myocardium from several incidences. The only disadvantage of this cyclotron-produced isotope seems to be its high price which will probably limit its use on a large scale. Fifty thallium 201 myocardium scintigraphs were practised on forty-eight coronary thrombosis patients. From this was established a precise topographic correlation between the electrocardiographic diagnosis and the scintigraph. The two corresponded in 47 cases out of 50. The few disagreements between ECG and scintigraphic results seem to be due either to poor-quality images or to an overall myocardium hypofixation connected with a very extensive necrosis. This means that thallium 201 myocardium scintigraphy is a reliable method of examination in the great majority of cases, giving a direct picture of the heart muscle and its necrotic lesions [fr

  13. Extra-osseous uterine pathophysiology demonstrated on skeletal scintigraphy

    International Nuclear Information System (INIS)

    Mansberg, R.; Lewis, G.

    1999-01-01

    Full text: Skeletal scintigraphy is a sensitive procedure for evaluating disease and trauma involving the skeleton. Extra-skeletal pathophysiology is also often demonstrated. This may include uptake by tumours, soft tissue calcification and infection as well as renal pathology. Skeletal scintigraphy is often performed to evaluate hip and back pain and extra-osseous uterine pathophysiology can be demonstrated in both the early and late phases of the study as in the following cases. Three women underwent skeletal scintigraphy for the investigation of low back pain in two patients and post-partum hip pain in one. A large vascular uterus with deviation of the bladder was demonstrated in the post-partum patient. Increased pelvic vascularity and bladder deviation in the second patient was shown by ultrasound to correspond to a left-sided fibroid with associated adenomyosis. In the third case, right-sided pelvic vascularity and left bladder deviation were shown on ultrasound to be due to an anteverted, anteflexed uterus tilted to the right. These cases illustrate the importance of documenting extra-osseous findings on skeletal scintigraphy and the benefits of correlation with anatomical imaging

  14. Sialoscintigraphy, dacryoscintigraphy, and 67Ga-scintigraphy in SJOGREN's syndrome

    International Nuclear Information System (INIS)

    De Rossi, G.

    1988-01-01

    In 68 cases of SJOGREN's syndrome (SS) dacryoscintigraphy (DS), sialoscintigraphy (SIS), and 67 Ga scintigraphy (GS) were performed along with other diagnostic examinations. Pre- and post-therapy results were available. The DS, SIS, and GS triad proves to be a simple, sensitive, and easy repeatable method to improve the diagnosis and follow-up of SS. (orig.) [de

  15. Is there a place for radionuclide bone scintigraphy in the ...

    African Journals Online (AJOL)

    ... shown the importance of bone scintigraphy in the detection of fractures in radiographnegative skeletal trauma.T-3 The early detection and immobilisation of fractures of the scaphoid are thought to be essential in preventing the disabling sequelae of avascular necrosis and pseudo-arthrosis,4 Several studies allude to the

  16. Contribution and advantages of scintigraphy in salivary pathology

    International Nuclear Information System (INIS)

    Naous, Hussein.

    1973-01-01

    Recent technical improvements, especially the use of the scintillation camera, enable kinetic studies to be carried out by isotopic exploration and salivary scintigraphy has become an easy, fast and painless method of functional investigation of the main salivary glands. This work outlines the results obtained by Tc 99m scintigraphy with a scintillation camera, relative to the most important salivary gland diseases. After an account of the anatomy and general pathology of the parotid glands and submaxillaries the chief characteristics of the tracer, the detection techniques and the method employed here are described briefly. The elementary scintigraphic aspects found in the different observations are reported, then discussed in connection with results already published. The conclusion drawn from this work is that it is possible in the vast majority of cases, by comparing and combining the morphological and kinetic study of the salivary glands by technetium 99m scintigraphy with the clinical context, to obtain very valuable information which no other complementary examination has so far been able to supply satisfactorily. Now that scintigraphy has become a method of functional and not only morphological exploration it occupies a vital place in the study of the salivary glands [fr

  17. Clinical aspects of pulmonary radioactivity observed in radiocolloid liver scintigraphy

    International Nuclear Information System (INIS)

    So, Young; Lee, Kang Wook; Lee, Heon Young; Lee, Won Woo

    2002-01-01

    We studied clinical aspects and courses of patients with pulmonary radioactivity on liver scintigraphy and speculated the mechanism of pulmonary uptake of radiocolloids. Forty-nine patients with pulmonary radioactivity were classified into 5 diseases groups-liver disease, infection, cancer, ischemic necrosis of liver, etc.- and their presence of absence of chronic liver disease (CLD), Child-Pugh class, serum levels of AST and ALT, results of follow-up liver scintigraphy and clinical course were checked. Of total 49 patients 25 had CLD; there were 23 liver disease patients, 16 infection patients, 7 advanced cancer patients, 2 ischemic necrosis of liver patients, and 1 hemolytic anemia patient. Reversible rise of serum levels of AST and ALT was observed in all patients with liver disease and ischemic necrosis of liver; on one-way ANOVA, these rise were statistically significant (p<0.01). Serum level of ALT of liver disease group patients without CLD was significantly higher than that of infection group patients without CLD (p<0.05). Among 17 patients who underwent follow-up liver scintigraphy, 13 showed no pulmonary radioactivity. Total 12 patients died during follow-up and most of them were terminal cancer patients or CLD patients of Child-Pugh class C. Pulmonary radioactivity of radiocolloid liver scintigraphy could be attributed to the mobilization of reticuloendothelial system (RES) cells by the activation of RES cells in severe infection and terminal cancer, and also by the extensive liver desctruction in liver diseases

  18. Bone scintigraphy in children with obscure skeletal pain

    International Nuclear Information System (INIS)

    Majd, Massoud

    1979-01-01

    In a group of 82 children with focal or generalized skeletal pain of obscure etiology, the radionuclide skeletal scintigraphy was the only, or the most informative, clue to the diagnosis of a variety of benign and malignant conditions. It is strongly recommended that any unexplained bone or joint pain in children be evaluated by this non-invasive technique [fr

  19. Diagnosis of subcapsular hematoma of the liver by scintigraphy

    International Nuclear Information System (INIS)

    Beauchamp, J.M.; Belanger, M.A.; Neitzschman, H.R.

    1976-01-01

    The diagnosis of subcapsular hematoma of the liver following blunt abdominal trauma has assumed clinical importance with recent reports of improved mortality with conservative management. There is increasing use of hepatic scintigraphy in evaluation of upper abdominal trauma. Two recently observed cases are used to illustrate the typical findings in this entity

  20. Cold metastases detected by bone scintigraphy in aggressive lung cancer

    International Nuclear Information System (INIS)

    Martinez Carsi, C.; Perales Vila, A.; Ruiz Hernandez, G.; Sanchez Marchori, C.; Oro Camps, J.

    1998-01-01

    A case of a 55-year-old man was remitted to Traumatology Department to present back pain of two weeks of evolution. The results of bone scintigraphy and the patient's evolution allowed the diagnosis. This case report and a literature review showed the importance of using a routine bone scan in diagnosis of bone metastases. (orig.) [de

  1. Early detection of infantile endocarditis by gallium-67 scintigraphy

    Energy Technology Data Exchange (ETDEWEB)

    Hardoff, R; Luder, A S; Lorber, A; Dembo, L

    1989-04-01

    An infant with suspected soft tissue infection of the knee was studied by /sup 67/Ga-scintigraphy. In addition to knee and hip joint increased activity, heart uptake was also demonstrated prior to the development of clinical signs of endocarditis. The early detection and treatment resulted in satisfactory clinical resolution.

  2. Early detection of infantile endocarditis by gallium-67 scintigraphy

    International Nuclear Information System (INIS)

    Hardoff, R.; Luder, A.S.; Lorber, A.; Dembo, L.; Technion-Israel Inst. of Tech., Haifa. Faculty of Medicine)

    1989-01-01

    An infant with suspected soft tissue infection of the knee was studied by 67 Ga-scintigraphy. In addition to knee and hip joint increased activity, heart uptake was also demonstrated prior to the development of clinical signs of endocarditis. The early detection and treatment resulted in satisfactory clinical resolution. (orig.)

  3. How useful is gastroesophageal reflux scintigraphy in suspected childhood aspiration

    Energy Technology Data Exchange (ETDEWEB)

    Fawcett, H.D.; Adams, J.C.; Hayden, C.K.; Swischuk, L.E.

    1988-05-01

    It has been suggested that gastroesophageal reflux scintigraphy might be useful in assisting one in determining therapy for patients suspected of aspirating or becoming apneic secondary to gastroesophageal reflux. This, however, has not been our experience and in reviewing 23 patients with recurrent pneumonia and/or apnea who had gastroesophageal reflux scintigraphy, we were able to detect aspiration in only one. This was especially significant since 13 (59%) of these patients had demonstrable reflux, and of these, eight were treated successfully for suspected aspiration even though none was demonstrated isotopically. To be sure, the demonstration of pulmonary aspiration with gastroesophageal reflux scintigraphy had little influence on patient selection and response to therapy. For this reason we feel there is little justification in depending on the GRS for the specific purpose of trying to document pulmonary aspiration in infants and children who are refluxing. One of the more serious complications of gastroesophageal (GE) reflux is aspiration leading to recurrent pulmonary infections and/or apnea. However, it always has been difficult to demonstrate actual aspiration into the lungs, and to be sure, barium studies of the upper GI tract seldom reveal this complication. Recently, however, considerable interest has been generated in gastroesophageal scintigraphy (GRS) as a possible means of documenting such aspiration. Rationale for this stems from the fact that suspected patients can be studied over a longer period of time and in addition, delayed and overnight images can be obtained. However, our experience does not support GRS as being an adequate method for demonstrating aspiration.

  4. Noninvasive external cardiac pacing for thallium-201 scintigraphy

    International Nuclear Information System (INIS)

    Feldman, M.D.; Warren, S.E.; Gervino, E.V.

    1988-01-01

    Improvements in noninvasive external cardiac pacing have led to a technique with reliable electrical capture and tolerable patient discomfort. To assess the use of this modality of pacing in combination with thallium scintigraphy as a noninvasive pacing stress test, we applied simultaneous noninvasive cardiac pacing, hemodynamic monitoring, and thallium-201 scintigraphy in 14 patients undergoing cardiac catheterization for chest pain syndromes. Two patients had normal coronary arteries, while the remaining 12 had significant coronary artery disease. Thallium scintigraphic responses to pacing were compared to routine exercise thallium stress testing in nine of these 14 patients. All patients were noninvasively paced to more than 85% of the age-predicted maximum heart rate. Twelve patients demonstrated reversible thallium defects, which corresponded in 11 cases to significant lesions seen on coronary angiography. Of nine patients who underwent both pacing and exercise thallium stress tests, comparable maximal rate-pressure products were achieved. Moreover, thallium imaging at peak pacing and during delayed views did not differ significantly from exercise thallium scintigraphy. A limiting factor associated with the technique was local patient discomfort, which occurred to some degree in all patients. We conclude that noninvasive external cardiac pacing together with thallium scintigraphy is capable of detecting significant coronary artery disease and may be comparable to routine exercise thallium stress testing. This new modality of stress testing could be useful in patients unable to undergo the exercise required for standard exercise tolerance testing, particularly if improvements in the technology can be found to reduce further the local discomfort

  5. [Application scintigraphy in evaluation of salivary gland function].

    Science.gov (United States)

    Mojsak, Małgorzata Natalia; Rogowski, Franciszek

    2010-03-01

    The salivary glands belong to the exocrine glands. There are tree main pairs of salivary glands: parotid, submandibular, sublingual. Several modalities are used for salivary gland imaging, such as sonography, computer tomography and magnetic resonance imaging. The aim of these methods is mainly to present morphological impairment. Parenchymal function and excretion function of all salivary glands can be quantified by scintigraphy. After single intravenous injection of 99mTc-pertechnetate sequential images are acquired up to 25-40 minutes. Usually about fifteen minutes postinjection 3 ml of lemon juice are administered intraorally as sialogogue. Salivary scintigraphy can estimate the severity of salivary gland involvement and function disorders, which may not be accurately reflected by the morphological damage. The clinical impact of scintigraphy has been reported in multiple salivary glands diseases, such as Sjogren's syndrome, sialolithiasis with or without parenchymal damage, iatrogenic irradiation of the salivary glands for therapy of head and neck tumors or radioiodine treatment of thyroid cancer. No other method can give so much information about function of salivary glands. Scintigraphy is noninvasive examination, easy to perform, reproducible and well-tolerated by the patient.

  6. Nuclear medicine and the management of prostate cancer in Yaounde - Cameroon

    International Nuclear Information System (INIS)

    Dong a Zok, F.; Mbodj, M.; Assiga Ahanda, Y.M.; Angwafor, F.

    2009-01-01

    Prostate cancer is the most frequent neoplasm affecting males above 50 years old in developed countries. Previous studies carried out in Cameroon have shown that, this condition is not infrequent. Late diagnosis is equally common. The advent of nuclear medicine technology in the year 2000 has enabled the possibility of prostate specific antigen (P.S.A.) assay and imaging by bone scintigraphy. In this study, we aimed at assessing the contributions of P.S.A. assay and bone scintigraphy in the management of prostate cancer in Cameroon. Within a 5 years period (January 2003 - December 2007) 360 patients had biopsy proven (Gleason score) prostate adenocarcinoma. The age ranged from 50 to 85 years with a mean of 67 years. Those aged between 60 to 69 years were more affected. The patients were divided into 2 groups: a first one accruing of 250 patients with a previous bone scintigraphy carried out before treatment and a second group of patients who underwent a bone scintigraphy during treatment. Clinical features digital rectal examination, endorectal echography were noted. P.S.A. levels and bone scintigraphy results were also noted. Most of these patients (80.56%) presented with advanced lesions with metastases. Orchiectomy and hormonotherapy were the most used methods of treatment due to late diagnosis. Bone scintigraphy-evidenced lesions were mainly located (92.25%) at the dorso-lumbar region of the spine. There is a correlation between the following variables: clinical features, namely, digital rectal examinations, P.S.A. blood levels, ultrasound, histology and bone scintigraphy. Therefore, we can conclude that, P.S.A. is an important marker of prostate cancer. Its association with bone scintigraphy is appropriate for the detection of bone metastases. (authors)

  7. Colon transit scintigraphy by 67 Ga citrate for idiopathic constitution

    International Nuclear Information System (INIS)

    Neshandar Asll, I.; Ehsani, M.J.; Javadi, H.

    2005-01-01

    Background/objective: segmental colonic transit studies are important in patients with severe constipation. This study is the first Iranian preliminary survey of colonic transit scintigraphy using 67 Ga -citrate as a new method in constipated patients with normal radiographic and colonoscopic evaluations. Patients and methods: thirteen patients with idiopathic constipation underwent colon transit scintigraphy. After oral administration of 6-7 MBq Ga-citrates, serial abdominal images were taken up to 72 hours. Pattern classification wa s performed visually according to the distribution of radioactivity, Scintigraphic parameters such as geometric mean center of seq mental retention of tracer, as well as mean ac activity profiles and colonic tracer half-clearance time were calculated Results: Three patterns of colonic transit scintigraphy were recognized. Nine patients had the normal pattern, i.e. excellent propagation of ac activity. Three patients had the colonic inertia pattern with marked retention of activity in the transverse colon and splenic flexure at 48 hours, One patient had significant retention of activity in the recto sigmoid at 72 hours, defined as functional recto sigmoid obstruction . No significant difference was seen in GMC24h between the normal pattern and colonic inertia (P4.053), but GMC48h and GMC72h markedly differed between the two groups (P50.0 16 and 0.025 respectively). 'The mean half clearance time of the two groups was di different (P4.017). Our results are well compatible with scintigraphic diagnostic criteria in different patterns of colonic transit defined by other studies with different radiotracer. Conclusion: oral 67 Ga -citrate colon transit scintigraphy is a feasible method to evaluate idiopathic constipation and seems to be a suitable surrogate for radio-opaque markers. Keywords: oral 67 Ga -citrate, colonic transit study, idiopathic constipation, scintigraphy

  8. Clinical efficacy of 99mTc-tetrofosmin myocardial scintigraphy

    International Nuclear Information System (INIS)

    Adachi, Itaru; Sugioka, Yasushi; Tanaka, Yasunori

    1993-01-01

    99m Tc-tetrofosmin is a lipophilic, cationic diphosphine which has been developed for myocardial imaging. We examined 9 patients with ischemic heart disease including 3 angina pectoris (AP), 4 old myocardial infarction (OMI), 1 AP with OMI and 1 syndrome X. One patient was examined before and after operation. Three hundred seventy MBq of 99m Tc-tetrofosmin was injected during exercise and 740 MBq at rest. And 74 MBq of 201 Tl myocardial exercise and redistribution scintigraphy was also performed to compare with 99m Tc-tetrofosmin myocardial scintigraphy. SPECT, multiple gated SPECT and anterior planar images were obtained in all cases. We calculated percent wall thickening (%WT) using multiple gated SPECT images. There was a decreased lung uptake in 99m Tc-tetrofosmin planar images compared to 201 Tl myocardial scintigraphy. Liver and Biliary system uptake in 99m Tc-tetrofosmin images was decreased with intake of milk. Segmental comparison of SPECT images showed an agreement in 9/10 of the segment between 201 Tl and 99m Tc-tetrofosmin. We could obtain excellent quality of multiple gated SPECT images in all patients. We could calculate percent wall thickening (%WT) in all patients. We conclude that 99m Tc-tetrofosmin myocardial scintigraphy should provide usefulness for detection of ischemic myocardium as same as 201 Tl myocardial scintigraphy, although the biologic characteristics of two agents were different. These data and excellent quality of multiple gated SPECT images suggest that 99m Tc-tetrofosmin is a new 99m Tc agent for evaluation of patients with ischemic heart disease. (author)

  9. Bone scintigraphy for metastasis detection in canine osteosarcoma

    International Nuclear Information System (INIS)

    Forrest, L.J.; Thrall, D.E.

    1994-01-01

    The purpose of this study was to assess the usefulness of serial bone scintigraphy in the detection of skeletal and extraskeletal metastases in dogs with appendicular osteosarcoma. Twenty-six dogs with primary, appendicular osteosarcoma were entered into a limb-sparing protocol. Bone scintigraphy was performed upon presentation, after neoadjuvant therapy but prior to surgery and at selective intervals after limb-sparing surgery to evaluate for the presence of metastasis. Thoracic radiographs, and radiographs of other sites, were also made at the time of each bone scan. All dogs had a complete necropsy. No dog had bone or lung metastases detected prior to treatment. The bone scans, medical records, and radiographs of each dog were reviewed retrospectively. All but one dog developed metastatic disease. Bone metastatic sites were confirmed at necropsy in 12 of the 26 dogs. Seven of these 12 dogs had bone metastatic sites which were not producing clinical signs, i.e. an occult metastasis. In five of the seven dogs, the occult site was the first metastatic site detected. Extraskeletal metastases were identified scintigraphically in six of the 26 dogs, but these were clinically apparent prior to bone scintigraphy in each dog. Suspected malignant scintigraphic lesions were proven benign in six dogs. In five dogs with malignant bone lesions at necropsy the last bone scan prior to euthanasia was normal. The time interval between scintigraphy and necropsy was variable in these five dogs. All dogs without bone metastases at necropsy had normal bone scans. This study validates the usefulness of bone scintigraphy for detection of occult bone metastasis and improved ability for tumor staging in dogs with appendicular osteosarcoma

  10. The role of bone scintigraphy in detecting child abuse.

    Science.gov (United States)

    Conway, J J; Collins, M; Tanz, R R; Radkowski, M A; Anandappa, E; Hernandez, R; Freeman, E L

    1993-10-01

    This review of diagnostic imaging in cases of suspected child abuse characterizes the significant differences between bone scintigraphy and x-ray evaluation, describes the advantages and disadvantages of each modality, postulates on the specific mechanisms of injury that produce the characteristic scintigraphic findings, and emphasizes the influences that scintigraphic studies have on the medical, social, and legal aspects of child abuse. The major advantages of bone scintigraphy are its increased sensitivity (25% to 50%) in detecting evidence of soft tissue as well as bone trauma in child abuse. Furthermore, it is postulated that the specific mechanisms of inflicting the trauma relate to the patient's size and are characterized by bone scintigraphy. During fits of anger or frustration, the perpetrator of child abuse grasps the small infant or child by the thorax during the shaking activity. This produces characteristic rib injuries. The older and heavier child is more likely to be grabbed by the extremities, which produces periosteal injuries manifested as characteristic abnormal localizations in the diaphyses of the extremities. The roentgenograms of these injuries are frequently normal. The importance of bone scintigraphy is its complementary nature in defining and characterizing the extent and severity of trauma from child abuse. Such findings have direct bearing on the medical, social, and legal outcomes for the abused child. The quality of scintigraphic imaging is important, requiring the use of magnification techniques in the infant. The interpretation of the scintigraphic images depends on an understanding of the mechanisms by which the radionuclide localizes in bone. The same traumatic incident can lead to decreased, normal, or increased localization at the trauma site. Radionuclide scintigraphy is a complementary rather than competitive imaging modality to X-ray evaluation in the diagnosis and management of physical child abuse.

  11. Detection of thrombi by 111In-oxine platelet scintigraphy

    International Nuclear Information System (INIS)

    Makino, Katsutoshi; Yamamuro, Masashi; Ichikawa, Takehiko; Futagami, Yasuo; Konishi, Tokuji; Nakano, Takeshi; Takezawa, Hideo

    1985-01-01

    For 52 patients with cardiac disease and 11 patients with vascular disease, In-111-oxine platelet scintigraphy was performed to assess its clinical usefulness for detecting thrombi. Using Hayashida's method, platelets were separated in 43 ml peripheral blood, washed and labeled with 1 mCi In-111-oxine. In addition to planar images in the anterior, 45 deg left anterior oblique and left lateral views, single photon emission computed tomography (SPECT) was performed in some cases by rotating a dual gamma camera 24 and 72 hours after labeled platelet injection. The functions of platelet and coagulability were examined 36 hours after the injection of labeled platelets. Medical therapy was not changed during this study. Intracardiac thrombi were documented in 16 of 52 cases with cardiac disease and intravascular thrombi in 10 cases with vascular disease by angiography, CT and two-dimensional echocardiography. Positive images were obtained in 10 cases with cardiac disease and in eight cases with vascular disease by scintigraphy. Therefore, sensitivity, specificity, and overall accuracy were 63 %, 100 % and 88 % in intracardiac thrombi; 80 %, 100 % and 82 % in intravascular thrombi; and totally 69 %, 100 % and 87 %, respectively. In the detection of intracardiac thrombi by scintigraphy, the sensitivity seemed to be lower and the specificity higher than those by other graphic studies. In 52 cases with cardiac disease, five out of six cases with false negative images had received antiplatelet and/or anticoagulant drugs, and in these cases, platelet and coagulation functions tended to be decreased compared with those of true positive cases or true negative cases. We conclude that positive images in scintigraphy indicate the existence of growing thrombi, and that In-111-oxine platelet scintigraphy has clinical usefulness, not only for detecting thrombi, but for estimating platelet activity and effect of medical therapy. (author)

  12. 99Tcm-MIBI hepatobiliary scintigraphy in peadiatric patients with severe cholestatic infant hepatitis syndrome

    International Nuclear Information System (INIS)

    Chen Guibing; Huang Jinxiong; He Xiaojiang; Luo Zuoming; Lu Zhengyuan; Wu Hua

    2010-01-01

    Objective: Because of the limited of 99 Tc m -diethyl iminodiacetic acid ( 99 Tc m -EHIDA) hepatobiliary scintigraphy in the diagnosis of severe cholestatic infant hepatitis syndrome, trial use 99 Tc m -methoxy isobutyl isonitrile ( 99 Tc m -MIBI) as a new hepatobiliary scintigraphy imaging agent to understand its applied basis and primary evaluate value in diagnosis of severe cholestatic infant hepatitis syndrome. Methods: constructed choledochal atresia animal model and investigated the application basis of 99 Tc m -MIBI hepatobiliary scintigraphy. Twenty-seven children patients of severe cholestatic who finally confirmed infant hepatitis syndrome were underwent firstly 99 Tc m -EHIDIA hepatobiliary scintigraphy. After 24 h delay imaging next day, 99 Tc m -MIBI hepatobiliary scintigraphy was underwent after 1 h. Two imaging agents of value in the diagnosis of severe cholestatic infant hepatitis syndrome were compared. Results: It was proved that 99 Tc m -MIBI was surely excreted by hepatobiliary and had no intestinal autocrine phenomenon in animal test. So 99 Tc m -MIBI can be used to undergo hepatobiliary scintigraphy. The sensitivity of 99 Tc m -MIBI hepatobiliary scintigraphy in the diagnosis of severe cholestatic infant hepatitis syndrome was 100% in our primary clinical study. Its sensitivity was higher than which of 99 Tc m -EHIDA hepatobiliary scintigraphy (66.67%) by far. Conclusion: With regard to those children patients who suspected highly severe cholestatic infant hepatitis syndrome in clinical, the sensitivity of 99 Tc m -MIBI hepatobiliary scintigraphy is obviously superior to conventional 99 Tc m -EHIDA hepatobiliary scintigraphy. (authors)

  13. Paediatric nuclear medicine imaging.

    Science.gov (United States)

    Biassoni, Lorenzo; Easty, Marina

    2017-09-01

    Nuclear medicine imaging explores tissue viability and function by using radiotracers that are taken up at cellular level with different mechanism. This imaging technique can also be used to assess blood flow and transit through tubular organs. Nuclear medicine imaging has been used in paediatrics for decades and this field is continuously evolving. The data presented comes from clinical experience and some milestone papers on the subject. Nuclear medicine imaging is well-established in paediatric nephro-urology in the context of urinary tract infection, ante-natally diagnosed hydronephrosis and other congenital renal anomalies. Also, in paediatric oncology, I-123-meta-iodobenzyl-guanidine has a key role in the management of children with neuroblastic tumours. Bone scintigraphy is still highly valuable to localize the source of symptoms in children and adolescents with bone pain when other imaging techniques have failed. Thyroid scintigraphy in neonates with congenital hypothyroidism is the most accurate imaging technique to confirm the presence of ectopic functioning thyroid tissue. Radionuclide transit studies of the gastro-intestinal tract are potentially useful in suspected gastroparesis or small bowel or colonic dysmotility. However, until now a standardized protocol and a validated normal range have not been agreed, and more work is necessary. Research is ongoing on whether magnetic resonance imaging (MRI), with its great advantage of great anatomical detail and no ionizing radiations, can replace nuclear medicine imaging in some clinical context. On the other hand, access to MRI is often difficult in many district general hospitals and general anaesthesia is frequently required, thus adding to the complexity of the examination. Patients with bone pain and no cause for it demonstrated on MRI can benefit from bone scintigraphy with single photon emission tomography and low-dose computed tomography. This technique can identify areas of mechanical stress at

  14. Semi-quantitative evaluation of gallium-67 scintigraphy in lupus nephritis

    International Nuclear Information System (INIS)

    Lin Wanyu; Hsieh Jihfang; Tsai Shihchuan; Lan Joungliang; Cheng Kaiyuan; Wang Shyhjen

    2000-01-01

    Within nuclear medicine there is a trend towards quantitative analysis. Gallium renal scan has been reported to be useful in monitoring the disease activity of lupus nephritis. However, only visual interpretation using a four-grade scale has been performed in previous studies, and this method is not sensitive enough for follow-up. In this study, we developed a semi-quantitative method for gallium renal scintigraphy to find a potential parameter for the evaluation of lupus nephritis. Forty-eight patients with lupus nephritis underwent renal biopsy to determine World Health Organization classification, activity index (AI) and chronicity index (CI). A delayed 48-h gallium scan was also performed and interpreted by visual and semi-quantitative methods. For semi-quantitative analysis of the gallium uptake in both kidneys, regions of interest (ROIs) were drawn over both kidneys, the right forearm and the adjacent spine. The uptake ratios between these ROIs were calculated and expressed as the ''kidney/spine ratio (K/S ratio)'' or the ''kidney/arm ratio (K/A ratio)''. Spearman's rank correlation test and Mann-Whitney U test were used for statistical analysis. Our data showed a good correlation between the semi-quantitative gallium scan and the results of visual interpretation. K/S ratios showed a better correlation with AI than did K/A ratios. Furthermore, the left K/S ratio displayed a better correlation with AI than did the right K/S ratio. In contrast, CI did not correlate well with the results of semi-quantitative gallium scan. In conclusion, semi-quantitative gallium renal scan is easy to perform and shows a good correlation with the results of visual interpretation and renal biopsy. The left K/S ratio from semi-quantitative renal gallium scintigraphy displays the best correlation with AI and is a useful parameter in evaluating the disease activity in lupus nephritis. (orig.)

  15. 99m technetium-MDP bone scintigraphy in evaluation of painful joint prosthesis

    International Nuclear Information System (INIS)

    Milosevic, D.; Jaukovic, M.; Jaukovic, Lj.; Ajdinovic, B.

    2004-01-01

    In addition of clinical evaluation and x-ray radiography, the diagnosis of a loose joint prosthesis is often made by nuclear medicine imaging techniques. Differentiation between loosening and infected prosthesis is important for better treatment of those patients. Aim: The aim of this study was to reevaluate the scintigraphic patterns in patients with painful hip of knee arthroplasty. Material and Method: From 1996. to 2003. forty patients aged 49-78 years were referred for evaluation of possible loosening/infection joint prosthesis: 36 pts with 39 total/ partial hip prosthesis, 1 pt with knee prosthesis and 3 pts with history of previously extracted hip prosthesis due to infection. Whole body acquisition had been performed with a single head gamma camera three hours after the injection of 740 MBq 99m Tc-MDP. Scans were classified as: positive for loosening if abnormal uptake was shown at the tip of the prosthesis; positive for infection if diffuse abnormal uptake was shown around the implant; negative and indeterminate scans. Scintigraphic findings were compared to clinical follow up, histology or cultures. Results: Positive findings were found in 17 bone scans strongly suggesting loosening in 10 cases, infection of prosthesis in 4 cases and both loosening/infection in 3 cases. Bone scintigraphy was normal in 11pts. Scans of three pts with previously extracted hip prosthesis and scheduled for reimplatation, showed inhomogeneously and mildly increased uptake in femur. Most of scans classified as indeterminate (n=12) showed slightly increased tracer uptake in region of acetabular roof, greater or lesser tho chanter, suggesting bone remodeling due to the presence of implant, rather than loosening. Conclusion: 99m Tc-MDP bone scintigraphy had a significant role in assessing the painful joint prosthesis. Complementary diagnostic procedures should be considered in indeterminate scintiscans. (authors)

  16. Application of the newly developed Japanese adenosine normal database for adenosine stress myocardial scintigraphy.

    Science.gov (United States)

    Harata, Shingo; Isobe, Satoshi; Morishima, Itsuro; Suzuki, Susumu; Tsuboi, Hideyuki; Sone, Takahito; Ishii, Hideki; Murohara, Toyoaki

    2015-10-01

    The currently available Japanese normal database (NDB) in stress myocardial perfusion scintigraphy recommended by the Japanese Society of Nuclear Medicine (JSNM-NDB) is created based on the data from exercise tests. The newly developed adenosine normal database (ADS-NDB) remains to be validated for patients undergoing adenosine stress test. We tested whether the diagnostic accuracy of adenosine stress test is improved by the use of ADS-NDB (Kanazawa University). Of 233 consecutive patients undergoing (99m)Tc-MIBI adenosine stress test, 112 patients were tested. The stress/rest myocardial (99m)Tc-MIBI single-photon emission computed tomography (SPECT) images were analyzed by AutoQUANT 7.2 with both ADS-NDB and JSNM-NDB. The summed stress score (SSS) and summed difference score (SDS) were calculated. The agreements of the post-stress defect severity between ADS-NDB and JSNM-NDB were assessed using a weighted kappa statistic. In all patients, mean SSSs of all, right coronary artery (RCA), left anterior descending (LAD), and left circumflex (LCx) territories were significantly lower with ADS-NDB than those with JSNM-NDB. Mean SDSs in all, RCA, and LAD territories were significantly lower with ADS-NDB than those with JSNM-NDB. In 28 patients with significant coronary stenosis, the mean SSS in the RCA territory was significantly lower with ADS-NDB than that with JSNM-NDB. In 84 patients without ischemia, both mean SSSs and SDSs in all, RCA, LAD, and LCx territories were significantly lower with ADS-NDB than those with JSNM-NDB. Weighted kappa values of all patients, patients with significant stenosis, and patients without ischemia were 0.89, 0.83, and 0.92, respectively. Differences were observed between results from ADS-NDB and JSNM-NDB. The diagnostic accuracy of adenosine stress myocardial perfusion scintigraphy may be improved by reducing false-positive results.

  17. Assessment of therapeutic effect in patients with secondary hyperparathyroidism using bone scintigraphy

    International Nuclear Information System (INIS)

    Kaida, Hayato; Ishibashi, Masatoshi; Baba, Kenkichi; Okuda, Seiya; Hayabuchi, Naofumi; Nishida, Hidemi; Hiromatsu, Yuji

    2005-01-01

    The semi-quantitative method of bone scintigraphy [bone to soft tissue (B/ST) ratio] has been used in diagnosing and evaluating systemic metabolic bone diseases. The aim of this study is to evaluate of the therapeutic effect of secondary hyperparathyroidism (SHP). The subjects were ten hemodialysis patients with SHP. Seven patients underwent parathyroidectomy (PTX), and 22-Oxacalcitoriol (derivative of 1, 25-dihydroxyvitamin D 3 ) (OCT) was given to three patients. Bone scintigraphy and blood tests [intact parathyroid hormone (PTH), alkaline phosphatase (ALP), calcium (Ca), phosphorus (P), bone alkaline phosphatase (BALP), and deoxypridinoline (DPYD)] were performed before and after treatment. Regions of interest were drown around cranium, lumbar vertebrae, femoral neck and soft tissue of left medial thigh to calculate the B/ST ratio. The B/ST ratios of cranium, lumbar vertebrae, and femoral neck were reduced significantly after PTX (cranium, p=0.0079, lumbar vertebrae, p=0.0282, femoral neck, p=0.0252). Intact PTH, ALP, Ca, P, BALP and DPYD levels were reduced significantly after PTX (intact PTH, p=0.003, Ca, p=0.0005, P, p=0.0393, ALP, p=0.005 1, DPYD, p=0.0232, BALP, p=0.0324). After OCT administration, the B/ST ratio of each bony region showed tendency to diminish, although not significantly. Intact PTH levels were reduced significantly, although ALP, BALP, and DPYD levels were not. Ca and P levels were increased significantly because of the medicinal action of OCT. The B/ST ratio of cranium may be non-invasive method and have potential in evaluating the therapeutic effect of SHP. (author)

  18. Late radiation effects of low doses from occupational exposure. Antibodies to cytomegalovirus, Epstein-Barr virus and human T cell lymphotropic virus type 1 in radiological technologists

    Energy Technology Data Exchange (ETDEWEB)

    Kumagai, Etsuko; Tanoue, Shozo (Kumamoto Univ. (Japan). Coll. of Medical Science); Sawada, Shozo

    1989-05-01

    To elucidate the effects of long-term exposure to low dose irradiation, serostatus of antibodies to cytomegalovirus (CMV), Epstein-Barr virus (EBV) and human T cell lymphotropic virus type 1 (HTLV-1) was determined in 99 radiological technologists and 96 healthy volunteers. Abnormal seropositivity rate for CMV was significantly higher in technologists working for 15 years or more than in those working for less than 15 years. For the same age group, however, there was no significant difference between technologists and controls. Seropositivity rates for EBV-viral capsid antigen (VSA)/IgG and early antigen (EA)/IgG were significantly higher in technologists working for 15 years or more than in the age-matched control group. In the group of technologists exposed to 0.3 Sv or more, seropositivity rates of these antibodies were significantly higher than in those exposed to less than 0.3 Sv. However, there was no correlation between exposure doses and both EBV-associated nuclear antigen antibody and HTLV-1 antibody. Few technologists seronegative for CMV antibody had seropositive antibodies of EBV-VCA/IgG and EA/IgG. For technologists seropositive for CMV antibody, 31% and 54% were seropositive for EBV-VCA/IgG and EA/IgG antibodies, respectively. (Namekawa, K).

  19. Diagnostic value of (111)In-granulocyte scintigraphy in patients with fever of unknown origin

    DEFF Research Database (Denmark)

    Kjaer, Andreas; Lebech, Anne-Mette

    2002-01-01

    111In-granulocyte scintigraphy is often used as a diagnostic tool in patients with fever of unknown origin (FUO). However, its diagnostic performance has been studied in only a limited number of investigations, with most having been published more than 10 y ago; in addition, a broad range...... of sensitivities and specificities has been reported. Therefore, the aim of this study was to investigate the diagnostic value of granulocyte scintigraphy in patients fulfilling the criteria of FUO. Also studied was whether increased peripheral leukocyte count or C-reactive protein (CRP) level could be used...... to select patients for scintigraphy to raise the diagnostic value. METHODS: For 31 patients with true FUO who underwent granulocyte scintigraphy at a third-line referral hospital between 1995 and 2000, the files and scintigraphy findings were reviewed retrospectively to test the ability of scintigraphy...

  20. The evaluation of 67Ga-scintigraphy in malignant tumor of the urinary tract

    International Nuclear Information System (INIS)

    Arai, Eishoku; Nishibuchi, Shigeo; Katamura, Eiju

    1982-01-01

    67 Ga-scintigraphy was performed in 40 patients with tumor of the urinary tract (18 with renal cell carcinoma, 4 with renal pelvic cancer, 18 with bladder cancer). In patients with renal cell carcinoma, 67 Ga-scintigraphy was positive in 46% of those with primary lesions, and in 80% of those with metastatic lesions. In those with renal pelvic cancer, two with only a primary lesion had a negative 67 Ga-scintigraphy, and one with both primary and metastic lesions and one with only a metastatic lesion after nephrectomy showed distinctly positive 67 Ga-scintigraphy. Among patients with bladder cancer only 31% with primary lesions only had positive 67 Ga-scintigraphy. In conclusion, 67 Ga-scintigraphy is of little use as a diagnostic aid in primary tumors of the urinary tract, but may be useful in the diagnosis of metastatic lesions. (author)

  1. [Future roles of clinical laboratories and clinical laboratory technologists in university hospitals].

    Science.gov (United States)

    Yokota, Hiromitsu; Yatomi, Yutaka

    2013-08-01

    Clinical laboratories in university hospitals should be operated with a good balance of medical practice, education, research, and management. The role of a clinical laboratory is to promptly provide highly reliable laboratory data to satisfy the needs of clinicians involved in medical practice and health maintenance of patients. Improvement and maintenance of the quality of the laboratory staff and environment are essential to achieve this goal. In order to implement these requirements efficiently, an appropriate quality management system should be introduced and established, and evaluated objectively by a third party (e.g. by obtaining ISO 15189 certification). ISO 15189 is an international standard regarding the quality and competence of clinical laboratories, and specifies a review of the efficient operational system and technical requirements such as competence in implementing practical tests and calibration. This means the results of laboratory tests reported by accredited laboratories withstand any international evaluation, which is very important to assure the future importance of the existence and management of clinical laboratories as well as internationalization of medical practice. "Education" and "research" have important implications in addition to "medical practice" and "management", as the roles that clinical laboratories should play in university hospitals. University hospital laboratories should be operated by keeping these four factors in good balance. Why are "education" and "research" required in addition to "medical practice" services? If individual clinical laboratory technologists can provide an appropriate response to this question, the importance of the existence of clinical laboratories would be reinforced, without being compromised.

  2. A goodness of fit and validity study of the Korean radiological technologists' core job competency model

    International Nuclear Information System (INIS)

    Lim, Chang Seon; Cho, A Ra; Hur, Yera; Choi, Seong Youl

    2017-01-01

    Radiological Technologists deals with the life of a person which means professional competency is essential for the job. Nevertheless, there have been no studies in Korea that identified the job competence of radiologists. In order to define the core job competencies of Korean radiologists and to present the factor models, 147 questionnaires on job competency of radiology were analyzed using 'PASW Statistics Version 18.0' and 'AMOS Version 18.0'. The valid model consisted of five core job competencies ('Patient management', 'Health and safety', 'Operation of equipment', 'Procedures and management') and 17 sub – competencies. As a result of the factor analysis, the RMSEA value was 0.1 and the CFI, and TLI values were close to 0.9 in the measurement model of the five core job competencies. The validity analysis showed that the mean variance extraction was 0.5 or more and the conceptual reliability value was 0.7 or more , And there was a high correlation between subordinate competencies included in each subordinate competencies. The results of this study are expected to provide specific information necessary for the training and management of human resources centered on competence by clearly showing the job competence required for radiologists in Korea's health environment

  3. Effects of long-term radiation exposure on chromosomal aberrations in radiological technologists

    International Nuclear Information System (INIS)

    Kumagai, Etsuko; Onomichi, Mitsukazu; Tanaka, Ryuji; Kumagai, Takashi; Sawada, Shozo.

    1990-01-01

    Chromosomal aberrations in the lymphocytes of radiation technologists (RT) were analyzed by the trypsin G-banding method to study the late effects of long-term exposure to low doses of radiation. Structural aberrations were identified in 384 (2.5%) of 15442 cells analyzed from 53 RT as compared to 177 (1.6%) of 11136 cells from 36 healthy controls. Stable aberrations were the most frequent in both groups and were either translocations or deletions. Unstable aberrations were mainly acentric fragments in both groups. The frequency of translocations and acentric fragments was significantly higher in the RT than in the controls and was highest in the RT over 50 years. The highest frequency observed in the >50 age group was attributed to the unknown for cumulative dose prior to introduction of film badges. Frequency of chromosomal aberrations correlated with the estimated dose from the film badges and years of experience of each RT based on the equation y=0.22+0.37D+4.35D 2 , where y is overall frequency of chromosomal aberrations and D is the estimated radiation dose in Sv. (author)

  4. Profile of currently employed European Food Scientists and Technologists: Education, experience and skills

    Directory of Open Access Journals (Sweden)

    Katherine Flynn

    2013-10-01

    Full Text Available The food & drink (F&D sector in Europe ranks low in innovation and the European F&D industry has been losing importance in the global market. The food professionals, i.e., food scientists and technologists (FSTs, may not be meeting the varied demands of the sector. Here, we identify education, experience and skills of current FSTs and compare  geographic regions and employment areas. Between 2009 and 2012, 287 questionnaires representing over 4000 FSTs were collected from employers in 16 countries. Analyses showed that more than 80% of FSTs have a university degree; but only in Industry in the Central European region are most degrees in food science/technology. More than half of FSTs, and almost 60% in the South, have less than 10 years’ experience. The most common FST job title is Quality Manager, but with several variations based on region and employment area. Among skills, the most common is Communicating; found in over 90% of FSTs in all regions and employment areas. Food Safety is the most common of the food sector-specific skills, present in more than 75% of FSTs, yet there are differences in food sector skills based on employment area. Overall, these data suggest similarities among currently employed food professionals throughout Europe; they are young and highly educated, but also differences, especially in their food sector-specific skills. An understanding of the current FST should contribute to the improvement of FST training and thus benefit the European food sector.

  5. Cardiac amyloidosis detection with pyrophosphate-99mTc scintigraphy

    Energy Technology Data Exchange (ETDEWEB)

    Souza, D.S.F.; Ichiki, W.A.; Coura Filho, G.B.; Izaki, M.; Giorgi, M.C.P.; Soares Junior, J; Meneghetti, J.C. [Universidade de Sao Paulo (FM/USP), SP (Brazil). Fac. de Medicina. Instituto do Coracao. Servico de Medicina Nuclear e Imagem Molecular

    2008-07-01

    Full text: Introduction: Amyloidosis is a rare disease, characterized by extracellular deposition of insoluble amyloid fibrils in organs and tissues. It may affect virtually any system, preferably heart, kidneys and liver. The cardiac involvement produces a spectrum of clinical features, usually with progressive dysfunction. Early diagnosis is important for institution of appropriate therapy. Case report: Male patient, 75 years old, with diagnosed congestive heart failure functional class III and Mobitz II second-degree atrial-ventricular block, was hospitalized for implantation of definitive cardiac pacemaker. Patient mentioned history of worsening effort dyspnoea over a one-month period, progressing to minimum effort, orthopnea, paroxysmal nocturnal dyspnoea and paroxysms of dry cough, and swelling of lower limbs. Echocardiography showed diffuse hypertrophy of left ventricle (LV), with systolic dysfunction due to diffuse hypokinesia and hyperrefringent aspect in the septum. It was questioned a cardiac infiltrating process. Cardiac amyloidosis was considered as a diagnostic hypothesis. The patient underwent a pyrophosphate-{sup 99m}Tc scintigraphy, which showed abnormal tracer uptake in the heart projection, with diffuse pattern on the left ventricle walls, compatible with the clinical suspicion cardiac amyloidosis, which was later confirmed by endomyocardial biopsy. Discussion: In this case report, the patient had clinical and other auxiliary examinations, such as electrocardiography and Doppler echocardiography, compatible with cardiac amyloidosis, which led to implementation with pyrophosphate-{sup 99m}Tc scintigraphy and later endomyocardial biopsy. Cardiac amyloidosis occurs in about half the cases of primary amyloidosis (AL) and is rare in secondary amyloidosis (AA). Its clinical presentation is polymorphic and it can be classified into four distinctive types: restrictive cardiomyopathy, systolic dysfunction, postural hypotension and conduction disorders

  6. Cardiac amyloidosis detection with pyrophosphate-99mTc scintigraphy

    International Nuclear Information System (INIS)

    Souza, D.S.F.; Ichiki, W.A.; Coura Filho, G.B.; Izaki, M.; Giorgi, M.C.P.; Soares Junior, J; Meneghetti, J.C.

    2008-01-01

    Full text: Introduction: Amyloidosis is a rare disease, characterized by extracellular deposition of insoluble amyloid fibrils in organs and tissues. It may affect virtually any system, preferably heart, kidneys and liver. The cardiac involvement produces a spectrum of clinical features, usually with progressive dysfunction. Early diagnosis is important for institution of appropriate therapy. Case report: Male patient, 75 years old, with diagnosed congestive heart failure functional class III and Mobitz II second-degree atrial-ventricular block, was hospitalized for implantation of definitive cardiac pacemaker. Patient mentioned history of worsening effort dyspnoea over a one-month period, progressing to minimum effort, orthopnea, paroxysmal nocturnal dyspnoea and paroxysms of dry cough, and swelling of lower limbs. Echocardiography showed diffuse hypertrophy of left ventricle (LV), with systolic dysfunction due to diffuse hypokinesia and hyperrefringent aspect in the septum. It was questioned a cardiac infiltrating process. Cardiac amyloidosis was considered as a diagnostic hypothesis. The patient underwent a pyrophosphate- 99m Tc scintigraphy, which showed abnormal tracer uptake in the heart projection, with diffuse pattern on the left ventricle walls, compatible with the clinical suspicion cardiac amyloidosis, which was later confirmed by endomyocardial biopsy. Discussion: In this case report, the patient had clinical and other auxiliary examinations, such as electrocardiography and Doppler echocardiography, compatible with cardiac amyloidosis, which led to implementation with pyrophosphate- 99m Tc scintigraphy and later endomyocardial biopsy. Cardiac amyloidosis occurs in about half the cases of primary amyloidosis (AL) and is rare in secondary amyloidosis (AA). Its clinical presentation is polymorphic and it can be classified into four distinctive types: restrictive cardiomyopathy, systolic dysfunction, postural hypotension and conduction disorders. Cardiac

  7. Clinical applications of PET-CT in nuclear medicine to medical specialists

    International Nuclear Information System (INIS)

    2012-08-01

    This regional training course about Clinical Applications of PET-Tc in nuclear medicine include: imaging, pathology, scintigraphy, computed tomography, radiology, endoscopy, magnetic resonance, biopsy, and histology. It also describes pathologies and diseases of organs and bone structures such as: musculoskeletal and osseous damage, tumors, fibroids, metastasize, neoplasm, adenopathies and cancer of liver, brain, glands, kidney, neck, thorax, lungs, uterus, ovaries, craniums, hypophysis etc

  8. The role and clinical value of thallium-201 myocardial scintigraphy in ischemic heart disease

    International Nuclear Information System (INIS)

    Shimada, Tomoyoshi; Nakamori, Hisato; Kurimoto, Toru; Karakawa, Masahiro; Matsuura, Takashi; Iwasaka, Toshiji; Inada, Mitsuo; Nishiyama, Yutaka

    1990-01-01

    To define the role and clinical value of thallium-201 myocardial scintigraphy in ischemic heart disease, 967 consecutive patients refered to our laboratory since 1985 were studied. The purpose of scintigraphy have changed from diagnosing of myocardial ischemia to assessing myocardial viability with the progress of coronary angioplasty. At present, thallium-201 myocardial scintigraphy have become indispensable noninvasive method for the management of patients with ischemic heart disease. (author)

  9. Guidelines for direct radionuclide cystography; Empfehlungen zur Durchfuehrung der direkten Radionuklid-Zystographie bei Kindern. Richtlinie uebernommen vom Paediatric Committee der European Association of Nuclear Medicine (EANM)

    Energy Technology Data Exchange (ETDEWEB)

    Fettich, J. [Univ. Medical Centre Ljubljana (Slovenia); Colarinha, P. [Inst. Portugues de Oncologia, Lisboa (Portugal); Fischer, S.; Hahn, K.; Porn, U. [Klinik fuer Nuklearmedizin, LMU Muenchen (Germany); Froekier, J. [Aarhus Univ. Hospital - Skejby (Denmark); Gordon, I. [Great Ormond Street Hospital for Children, London (United Kingdom); Kabasakal, L. [Cerraphasa Tip Fakultesi, Nukleer Tip Ana Bilim Dali, Aksaray (Turkey); Mann, M. [Inst. of Child Health, Rondebosh, Red Cross Hospital, Capetown (South Africa); Mitjavila, M. [Hospital Universitario de Getafe, Madrid (Spain); Olivier, P. [CHU Nancy (France); Piepsz, A. [CHU St Pierre (Belgium); Roca, I. [Hospital Vall d' Hebron, Barcelona (Spain); Sixt, R. [The Queen Silvia Children' s Hospital, Goeteborg (Sweden); Velzen, J. van [ARPES (Netherlands)

    2002-07-01

    These ''Empfehlungen'' are the german translation of the Guidelines on MIBG-Scintigraphy in Children, which were published by the Paediatric Committee of the European Association of Nuclear Medicine. (orig.) [German] Bei den vorliegenden Empfehlungen handelt es sich um die deutsche Uebersetzung der vom Paediatric Committee der European Association of Nuclear Medicine (EANM) publizierten Guidelines. (orig.)

  10. Guidelines for bone scintigraphy in children; Empfehlungen zur Knochenszintigraphie bei Kindern

    Energy Technology Data Exchange (ETDEWEB)

    Hahn, K.; Fischer, S. [LMU Muenchen (Germany). Klinik fuer Nuklearmedizin; Colarinha, P. [Instituto Portugues de Oncologia, Lisbon (Portugal); Gordon, I. [Great Osmond Street Hospital for Children, London (United Kingdom); Mann, M. [Red Cross Hospital, Cape Town (South Africa); Piepsz, A. [AZ VUB and CHU St. Pierre, Brussels (Belgium); Olivier, P. [CHU Vandoeuvre, Nancy (France); Sixt, R. [The Queen Silvia Children' s Hospital, Goeteborg (Sweden); Velzen, J. van

    2000-11-01

    The guidelines are intended to help nuclear medical teams in their daily routine. The guidelines give information relating to indications, performance of examinations, analysis and interpretation of the diagnostic results. The guidelines should be applied in the context of adopted basic quality criteria in nuclear medicine, requirements of the German radiation protection ordinance, as well as the regulatory codes for radiation protection in the medical field. The guidelines express the opinions of the Paediatric Committee of the EANM and hence focus on compliance with the relevant European standards in nuclear medicine. In order to enhance the specificity of results obtained with a bone scintigraphy, the interpretation of the results should be based on combined analysis with information drawn from X-rays. (orig./CB) [German] Zweck dieser Leitlinie ist es, dem nuklearmedizinischen Team eine Hilfe fuer die taegliche Praxis anzubieten. Diese Leitlinie enthaelt Informationen ueber die Indikationen, die Untersuchungsdurchfuehrung, Auswertung und Interpretation von Knochenszintigraphien bei Kindern. Sie sollte in Verbindung mit den ueblichen Qualitaetskriterien in der Nuklearmedizin und den Vorschriften der Strahlenschutzverordnung sowie der Richtlinie Strahlenschutz in der Medizin gesehen werden. Sie fasst die Meinung des Paediatric Committee der EANM zusammen und ist daher in einzelnen Bereichen mehr dem europaeischen Standard der Nuklearmedizin angepasst. Um die Spezifitaet der Knochenszintigraphie zu erhoehen, sollte immer eine gemeinsame Interpretation von Knochenszintigraphie und Roentgenbildern erfolgen. (orig.)

  11. Myocardial perfusion scintigraphy in Germany. Results of the 2005 query and current status

    International Nuclear Information System (INIS)

    Lindner, O.; Burchert, W.; Bengel, F.M.; Zimmermann, R.; Dahl, J. vom; Schaefer, W.; Buell, U.; Schober, O.; Schwaiger, M.; Kluge, R.; Schaefers, M.

    2007-01-01

    The working group Cardiovascular Nuclear Medicine of the German Society of Nuclear Medicine (DGN), in cooperation with the working group Nuclear Cardiology of the German Cardiac Society (DGK), decided to conduct a national survey on myocardial perfusion scintigraphy (MPS). Method: a questionnaire to evaluate MPS for the year 2005 was sent. Results: 346 completed questionnaires had been returned (213 private practices, 99 hospitals and 33 university hospitals). MPS of 112 707 patients were reported with 110 747 stress and 95 878 rest studies. The majority (> 75%) was performed with 99m Tc-MIBI or tetrofosmin. 201 Tl stress-redistribution was used in 22 637 patients (20%). The types of stress were exercise in 78%, vasodilation with adenosine or dipyridamol in 21% and dobutamine in 1%. 99.97% of all MPS were SPECT studies. Gated SPECT was performed in 36% of the stress and in 32% of the rest studies. An attenuation correction was used in 21%. 29 institutions (8%) performed gated SPECT (stress and rest) and attenuation correction. 47% of all MPS were requested by ambulatory care cardiologists, 17% by internists, 12% by primary care physicians, 21% by hospital departments and 2% by others. Conclusion: in Germany, MPS is predominantly performed with 99m Tc-perfusion agents. The common type of stress is ergometry. Gated SPECT and attenuation correction do not yet represent standards of MPS practice in Germany, which indicates some potential of optimization. (orig.)

  12. Present status of education for radiation safety during clinical examinations and the role of the radiological technologist

    International Nuclear Information System (INIS)

    Satou, Yukimitsu

    1988-01-01

    The applications of radiation to the medical field are increasing steadily, along with advances in radiation technology and development of new medical equipment. Medical applications of radiation differ from applications in other fields, because the patient is exposed to radiation during examination and radiotherapy. Consequently, it is important that training courses in radiation safety for radiological technologists, medical doctors and nurses be periodically carried out to ensure a more effective and safe utilization of radiation. Furthermore, it is important that such training be based on a practical education curriculum, including basic knowledge, technical training, and safe habits. In this paper, we discuss the appropriate role and attitudes of the radiological technologist in radiation safety education. (author)

  13. Present status of education for radiation safety during clinical examinations and the role of the radiological technologist

    Energy Technology Data Exchange (ETDEWEB)

    Satou, Yukimitsu

    1988-10-01

    The applications of radiation to the medical field are increasing steadily, along with advances in radiation technology and development of new medical equipment. Medical applications of radiation differ from applications in other fields, because the patient is exposed to radiation during examination and radiotherapy. Consequently, it is important that training courses in radiation safety for radiological technologists, medical doctors and nurses be periodically carried out to ensure a more effective and safe utilization of radiation. Furthermore, it is important that such training be based on a practical education curriculum, including basic knowledge, technical training, and safe habits. In this paper, we discuss the appropriate role and attitudes of the radiological technologist in radiation safety education.

  14. The clinical use of platelet scintigraphy with 111-In-oxine

    International Nuclear Information System (INIS)

    Kessler, C.; Reuther, R.; Berentelg, J.; Kimmig, B.

    1983-01-01

    Platelet scintigraphy was performed on 62 patients with cerebral ischaemia. Pathological scintigraphic images were obtained in 29 of the 62 patients. In 79.3% of these 29 patients the scan was abnormal in the vessel clinically affected. Platelet scintigraphy was abnormal in 21 of 34 patients with normal angiogram or only slight atherosclerosis. In patients undergoing antiplatelet therapy, platelet scintigraphy was less often positive than in untreated patients. It is suggested that platelet scintigraphy could be an appropriate technique for detecting small mural thrombi of the carotid artery, which are the source of arterio-arterial emboli, and for controlling the efficiency of antiplatelet therapy. (orig.) [de

  15. Iodine-123 scintigraphy in the evaluation of pediatric thyroid disorders: a ten year experience

    International Nuclear Information System (INIS)

    Paltiel, H.J.; Summerville, D.A.; Treves, S.T.

    1992-01-01

    Between 1978 and 1987, we studied 280 children with iodine-123 ( 123 I) scintigraphy. Indications for scintigraphy included hypothyroidism, neck masses, hyperthyroidism, and miscellaneous reasons. Scintigraphy was helpful in distinguishing anatomic from functional causes of hyothyroidism. It reliably identified the location of the thyroid gland in patients with neck masses. The functional status of thyroid nodules was readily assessed and was important in directing further treatment. Scintigraphy added little to the management of children with post-irradiation hypothyroidism without a palpable nodule, patients with Hashimoto thyroiditis or Graves disease when the clinical diagnosis was straightforward. (orig./GDG)

  16. Comparative study of scintigraphy, ultrasonography and computed tomography in the evaluation of liver tumours

    International Nuclear Information System (INIS)

    Tohyama, Junko; Ishigaki, Takeo; Ishikawa, Tsutomu

    1982-01-01

    A comparative study of scintigraphy, ultrasonography and computed tomography in 67 proven patients with clinically suspected liver tumours was reported. Scintigraphy was superior in sensitivity to ultrasonography and computed tomography. However, in specificity, scintigraphy was inferior to other two. Diagnostic efficacy of ultrasonography and computed tomography in detecting focal masses of the liver was not greatly different, and simultaneous interpretation of ultrasonogram and computed tomogram was more helpful than independent interpretation. So they were thought to be complementary. In conclusion, scintigraphy was thought to be the initial procedure in the diagnostic approach for focal liver masses and ultrasonography was second procedure because of no radiation hazards. And computed tomography should follow then. (author)

  17. Iodine-123 scintigraphy in the evaluation of pediatric thyroid disorders: a ten year experience

    Energy Technology Data Exchange (ETDEWEB)

    Paltiel, H.J.; Summerville, D.A.; Treves, S.T. (Children' s Hospital, Boston, MA (United States). Div. of Nuclear Medicine Harvard Medical School, Boston, MA (United States))

    1992-08-01

    Between 1978 and 1987, we studied 280 children with iodine-123 ([sup 123]I) scintigraphy. Indications for scintigraphy included hypothyroidism, neck masses, hyperthyroidism, and miscellaneous reasons. Scintigraphy was helpful in distinguishing anatomic from functional causes of hyothyroidism. It reliably identified the location of the thyroid gland in patients with neck masses. The functional status of thyroid nodules was readily assessed and was important in directing further treatment. Scintigraphy added little to the management of children with post-irradiation hypothyroidism without a palpable nodule, patients with Hashimoto thyroiditis or Graves disease when the clinical diagnosis was straightforward. (orig./GDG).

  18. A case of muscular sarcoidosis diagnosed by gallium-67 scintigraphy and magnetic resonance imaging

    International Nuclear Information System (INIS)

    Sohn, Hyung Sun; Kim, Euy Neyng

    1999-01-01

    Gallium-67 scintigraphy is helpful in the assessment of active extrapulmonary sarcoidosis. Muscular involvement of sarcoidosis is often asymptomatic or nonspecific, and laboratory examinations do not provide convincing evidence of muscular involvement. We report a case of muscular sarcoidosis, which was detected by gallium-67 scintigraphy. In a patient who was suffering from fever and arthalgia of knee joint, gallium-67 scintigraphy showed mediastinal and hilar involvement of sarcoidosis with unexpected extensive muscular uptake. Magnetic resonance imaging revealed the detailed depiction of intramuscular infiltration of sarcoid granuloma. Gallium-67 scintigraphy is useful in detecting inflammatory muscular involvement of sarcoidosis as well as other multiorgan involvement

  19. ROC analysis of diagnostic performance in liver scintigraphy

    International Nuclear Information System (INIS)

    Fritz, S.L.; Preston, D.F.; Gallagher, J.H.

    1981-01-01

    Studies on the accuracy of liver scintigraphy for the detection of metastases were assembled from 38 sources in the medical literature. An ROC curve was fitted to the observed values of sensitivity and specificity using an algorithm developed by Ogilvie and Creelman. This ROC curve fitted the data better than average sensitivity and specificity values in each of four subsets of the data. For the subset dealing with Tc-99m sulfur colloid scintigraphy, performed for detection of suspected metastases and containing data on 2800 scans from 17 independent series, it was not possible to reject the hypothesis that interobserver variation was entirely due to the use of different decision thresholds by the reporting clinicians. Thus the ROC curve obtained is a reasonable baseline estimate of the performance potentially achievable in today's clinical setting. Comparison of new reports with these data is impossible, but is limited by the small sample sizes in most reported series

  20. Effect of biological factors during functional scintigraphy of the heart

    Energy Technology Data Exchange (ETDEWEB)

    Breuel, H P; Emrich, D; Luig, H [Goettingen Univ. (F.R. Germany). Abt. fuer Nuklearmedizin

    1976-07-01

    The parameters relating to functional scintigraphy of the heart (average circulation time, peak time) depend not only on the method (injection technique, radiopharmaceutical), but also on biological factors. Failure to take these into consideration may result in an erroneous interpretation of the findings. Circulation time in normal children aged 6 to 14 years, as determined by isotope methods is significantly shorter than in normal adults. Patients with compensated heart disease, as well trained athletes, show significant increase in all portions of the circulation time, when compared with normals of similar ages. This indicates that deviation in the haemodynamics of the circulation as shown by functional scintigraphy, can only be interpreted in the light of clinical findings.