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  1. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... News Physician Resources Professions Site Index A-Z Computed Tomography (CT) - Sinuses Computed tomography (CT) of the sinuses ... of CT of the Sinuses? What is CT (Computed Tomography) of the Sinuses? Computed tomography, more commonly known ...

  2. Body CT (CAT Scan)

    Science.gov (United States)

    ... Professions Site Index A-Z Computed Tomography (CT) - Body Computed tomography (CT) of the body uses special ... the Body? What is CT Scanning of the Body? Computed tomography, more commonly known as a CT ...

  3. Computed Tomography (CT) - Spine

    Science.gov (United States)

    ... Professions Site Index A-Z Computed Tomography (CT) - Spine Computed tomography (CT) of the spine is a ... the Spine? What is CT Scanning of the Spine? Computed tomography, more commonly known as a CT ...

  4. Abdominal and Pelvic CT

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    Full Text Available ... Index A-Z Computed Tomography (CT) - Abdomen and Pelvis Computed tomography (CT) of the abdomen and pelvis ... Pelvis? What is CT Scanning of the Abdomen/Pelvis? Computed tomography, more commonly known as a CT ...

  5. CT urography

    Energy Technology Data Exchange (ETDEWEB)

    Korobkin, M. [Dept. of Radiology, Univ. of Michigan, Ann Arbor, MI (United States)

    2005-11-15

    With the advent of multidetector row CT scanners, evaluation of the urothelium of the entire urinary tract with high-resolution thin sections during a single breath-hold has become a reality. Multidetector CT urography (MDCTU) is a single examination that allows evaluation of potential urinary tract calculi, renal parenchymal masses, and both benign and malignant urothelial lesions. Initial results with this new technique are encouraging. Current investigations of MDCTU focus on methods to improve opacification and distension of the upper urinary tract - the collecting systems, pelvis, and ureters. The role of abdominal compression, infusion of saline and/or furosemide, and optimal time delay of excretory phase imaging is being explored. Upper tract urothelial malignancies, including small lesions less the 5 mmin diameter, can be detected with high sensitivity. Methods to reduce radiation exposure are being explored, including split-bolus contrast injection techniques that combine nephrographic and excretory phases into a single phase. It is likely that in the near future, radiological evaluation of significant unexplained hematuria or of known or prior urothelial malignancy will consist of a single examination - MDCTU. (orig.)

  6. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... a relatively short time, especially when compared to magnetic resonance imaging (MRI). CT scanning is painless, noninvasive and accurate. A ... CT is less sensitive to patient movement than MRI. CT can be performed if you have an ...

  7. Computed Tomography (CT) -- Head

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    Full Text Available ... CT is less sensitive to patient movement than MRI. CT can be performed if you have an implanted medical device of any kind, unlike MRI. A diagnosis determined by CT scanning may eliminate ...

  8. Computed Tomography (CT) -- Head

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    Full Text Available ... hard time staying still, are claustrophobic or have chronic pain, you may find a CT exam to ... of soft tissue (particularly the brain, including the disease processes) are less visible on CT scans . CT ...

  9. Computed Tomography (CT) -- Head

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    Full Text Available ... the limitations of CT Scanning of the Head? What is CT Scanning of the Head? Computed tomography, ... than regular radiographs (x-rays). top of page What are some common uses of the procedure? CT ...

  10. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... are the limitations of CT of the Sinuses? What is CT (Computed Tomography) of the Sinuses? Computed ... nasal cavity by small openings. top of page What are some common uses of the procedure? CT ...

  11. Abdominal and Pelvic CT

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    Full Text Available ... pregnancy and x-rays. top of page What does the CT equipment look like? The CT scanner ... a speaker and microphone. top of page How does the procedure work? In many ways CT scanning ...

  12. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... for the CT examination. top of page What does the CT equipment look like? The CT scanner ... in the CT scanner. top of page How does the procedure work? In many ways, CT scanning ...

  13. Computed Tomography (CT) -- Head

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    Full Text Available ... News Physician Resources Professions Site Index A-Z Computed Tomography (CT) - Head Computed tomography (CT) of the head uses special x-ray ... Head? What is CT Scanning of the Head? Computed tomography, more commonly known as a CT or CAT ...

  14. Abdominal and Pelvic CT

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    Full Text Available ... CT scanning. top of page Additional Information and Resources RTAnswers.org: Radiation Therapy for Bladder Cancer Radiation ... Image Gallery Patient undergoing computed tomography (CT) scan View full size with caption Pediatric Content Some imaging ...

  15. CT appearance of splenosis

    Energy Technology Data Exchange (ETDEWEB)

    Mendelson, D.S.; Cohen, B.A.; Armas, R.R.

    1982-12-01

    Splenosis is an unusual complication of splenic trauma. The computed tomographic (CT) appearance of splenosis is described. One should consider this diagnosis when faced with a history of splenic trauma and multiple round or oval masses at CT.

  16. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... allows the body parts to be distinguished from one another on an x-ray film or CT ... benefits vs. risks? Benefits A CT scan is one of the safest means of studying the sinuses. ...

  17. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... be viewed on a computer monitor, printed on film or transferred to a CD or DVD. CT ... distinguished from one another on an x-ray film or CT electronic image. In a conventional x- ...

  18. Computed Tomography (CT) -- Head

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    Full Text Available ... be viewed on a computer monitor, printed on film or transferred to a CD or DVD. CT ... distinguished from one another on an x-ray film or CT electronic image. In a conventional x- ...

  19. Abdominal and Pelvic CT

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    Full Text Available ... be viewed on a computer monitor, printed on film or transferred to a CD or DVD. CT ... distinguished from one another on an x-ray film or CT electronic image. In a conventional x- ...

  20. Abdominal and Pelvic CT

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    Full Text Available ... the scanner at one time such as with MRI. If an intravenous contrast material is used, you ... CT is less sensitive to patient movement than MRI. CT can be performed if you have an ...

  1. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much ... CT examinations are fast and simple; in emergency cases, they can reveal internal injuries and bleeding quickly ...

  2. Abdominal and Pelvic CT

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    Full Text Available ... time, resulting in more detail and additional view capabilities. Modern CT scanners are so fast that they ... the technologist verifies that the images are of high enough quality for accurate interpretation. The CT examination ...

  3. Computed Tomography (CT) -- Head

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    Full Text Available ... time, resulting in more detail and additional view capabilities. Modern CT scanners are so fast that they ... the technologist verifies that the images are of high enough quality for accurate interpretation. A CT scan ...

  4. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... time, resulting in more detail and additional view capabilities. Modern CT scanners are so fast that they ... the technologist verifies that the images are of high enough quality for accurate interpretation. The actual CT ...

  5. Computed Tomography (CT) -- Head

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    Full Text Available ... CT Angiography page . top of page How should I prepare? You should wear comfortable, loose-fitting clothing ... within 10 minutes. top of page What will I experience during and after the procedure? CT exams ...

  6. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... resulting in more detail and additional view capabilities. Modern CT scanners are so fast that they can ... to ensure that you are properly positioned. With modern CT scanners, you will hear only slight buzzing, ...

  7. Abdominal and Pelvic CT

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    Full Text Available ... resulting in more detail and additional view capabilities. Modern CT scanners are so fast that they can ... to ensure that you are properly positioned. With modern CT scanners, you will hear only slight buzzing, ...

  8. Computed Tomography (CT) -- Head

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    Full Text Available ... resulting in more detail and additional view capabilities. Modern CT scanners are so fast that they can ... to ensure that you are properly positioned. With modern CT scanners, you will hear only slight buzzing, ...

  9. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... benefits vs. risks? Benefits A CT scan is one of the safest means of studying the sinuses. ... CT scanning provides very detailed images of many types of tissue as well as the lungs, bones, ...

  10. Computed Tomography (CT) -- Head

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    Full Text Available ... see the CT Angiography page . top of page How should I prepare? You should wear comfortable, loose- ... of a speaker and microphone. top of page How does the procedure work? In many ways CT ...

  11. Abdominal and Pelvic CT

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    Full Text Available ... CT) of the abdomen and pelvis is a diagnostic imaging test used to help detect diseases of ... as a CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces ...

  12. Computed Tomography (CT) -- Head

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    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much ... head CT scanning. Manufacturers of intravenous contrast indicate mothers should not breastfeed their babies for 24-48 ...

  13. Abdominal and Pelvic CT

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    Full Text Available ... liver, shows up in shades of gray, and air appears black. With CT scanning, numerous x-ray ... be performed if you have an implanted medical device of any kind, unlike MRI. CT imaging provides ...

  14. Computed Tomography (CT) -- Head

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    Full Text Available ... which may be causing hearing problems. determine whether inflammation or other changes are present in the paranasal ... CT scans . CT is not sensitive in detecting inflammation of the meninges —the membranes covering the brain. ...

  15. Lumbar spine CT scan

    Science.gov (United States)

    CAT scan - lumbar spine; Computed axial tomography scan - lumbar spine; Computed tomography scan - lumbar spine; CT - lower ... The lumbar CT scan is good for evaluating large herniated disks, ... smaller ones. This test can be combined with a myelogram to get ...

  16. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... to a CD or DVD. CT images of internal organs, bones, soft tissue and blood vessels provide ... clicking and whirring sounds as the CT scanner's internal parts, not usually visible to you, revolve around ...

  17. Abdominal and Pelvic CT

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    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much ... CT exam to be stressful. The technologist or nurse, under the direction of a physician, may offer ...

  18. Computed Tomography (CT) -- Head

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    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much ... CT exam to be stressful. The technologist or nurse, under the direction of a physician, may offer ...

  19. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... air-filled spaces within the bones of the face surrounding the nasal cavity. CT scanning is painless, ... and blood vessels. A CT scan of the face produces images that also show a patient's paranasal ...

  20. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... top of page What are the benefits vs. risks? Benefits A CT scan is one of the ... CT scans should have no immediate side effects. Risks There is always a slight chance of cancer ...

  1. Computed Tomography (CT) -- Head

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    Full Text Available ... top of page What are the benefits vs. risks? Benefits CT scanning is painless, noninvasive and accurate. ... CT scans should have no immediate side effects. Risks There is always a slight chance of cancer ...

  2. Abdominal and Pelvic CT

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    Full Text Available ... top of page What are the benefits vs. risks? Benefits Viewing a CT scan, an experienced radiologist ... CT scans should have no immediate side effects. Risks There is always a slight chance of cancer ...

  3. Abdominal and Pelvic CT

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    Full Text Available ... Then, the table will move slowly through the machine as the actual CT scanning is performed. Depending on the type of CT scan, the machine may make several passes. You may be asked ...

  4. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... Then, the table will move slowly through the machine as the actual CT scanning is performed. Depending on the type of CT scan, the machine may make several passes. You may be asked ...

  5. Computed Tomography (CT) -- Head

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    Full Text Available ... Then, the table will move slowly through the machine as the actual CT scanning is performed. Depending on the type of CT scan, the machine may make several passes. You may be asked ...

  6. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... When the image slices are reassembled by computer software, the result is a very detailed multidimensional view ... actual CT scanning is performed. Depending on the type of CT scan, the machine may make several ...

  7. Abdominal and Pelvic CT

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    Full Text Available ... body. The cross-sectional images generated during a CT scan can be reformatted in multiple planes, and can ... scanning is performed. Depending on the type of CT scan, the machine may make several passes. You may ...

  8. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... body. The cross-sectional images generated during a CT scan can be reformatted in multiple planes, and can ... particularly of soft tissues and blood vessels. A CT scan of the face produces images that also show ...

  9. Computed Tomography (CT) -- Head

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    Full Text Available ... body. The cross-sectional images generated during a CT scan can be reformatted in multiple planes, and can ... scanning is performed. Depending on the type of CT scan, the machine may make several passes. You may ...

  10. Abdominal and Pelvic CT

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    Full Text Available ... of CT Scanning of the Abdomen and Pelvis? What is CT Scanning of the Abdomen/Pelvis? Computed ... soft tissues and blood vessels. top of page What are some common uses of the procedure? This ...

  11. Computed Tomography (CT) -- Head

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    Full Text Available ... a stroke. a stroke, especially with a new technique called Perfusion CT. brain tumors. enlarged brain cavities ( ... brain. assess aneurysms or arteriovenous malformations through a technique called CT angiography. For more information, see the ...

  12. Abdominal and Pelvic CT

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    Full Text Available ... CT examination can reduce the risk of serious complications, such as those caused by a burst appendix ... See the Safety page for more information about pregnancy and x-rays. CT scanning is, in general, ...

  13. Computed Tomography (CT) -- Head

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... medical device of any kind, unlike MRI. A diagnosis determined by CT scanning may eliminate the need ...

  14. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... particularly the lungs, abdomen, pelvis and bones. A diagnosis determined by CT scanning may eliminate the need ...

  15. Computed Tomography (CT) -- Head

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    Full Text Available ... pregnancy and x-rays. top of page What does the equipment look like? The CT scanner is ... a speaker and microphone. top of page How does the procedure work? In many ways CT scanning ...

  16. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... pregnancy and x-rays. top of page What does the equipment look like? The CT scanner is ... a speaker and microphone. top of page How does the procedure work? In many ways CT scanning ...

  17. Abdominal and Pelvic CT

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    Full Text Available ... the scanning. Any motion, whether breathing or body movements, can lead to artifacts on the images. This ... clinical problems. CT is less sensitive to patient movement than MRI. CT can be performed if you ...

  18. Computed Tomography (CT) -- Head

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    Full Text Available ... the scanning. Any motion, whether breathing or body movements, can lead to artifacts on the images. This ... clinical problems. CT is less sensitive to patient movement than MRI. CT can be performed if you ...

  19. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... the scanning. Any motion, whether breathing or body movements, can lead to artifacts on the images. This ... clinical problems. CT is less sensitive to patient movement than MRI. CT can be performed if you ...

  20. Computed Tomography (CT) -- Head

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    Full Text Available ... soft tissue (particularly the brain, including the disease processes) are less visible on CT scans . CT is ... possible charges you will incur. Web page review process: This Web page is reviewed regularly by a ...

  1. Abdominal and Pelvic CT

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... preferable over CT scanning. top of page Additional Information and Resources RTAnswers.org: Radiation Therapy for Bladder ...

  2. Abdominal and Pelvic CT

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    Full Text Available ... over time. Follow-up examinations are sometimes the best way to see if treatment is working or ... of clinical problems. CT is less sensitive to patient movement than MRI. CT can be performed if ...

  3. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... CT scanner is typically a large, box-like machine with a hole, or short tunnel, in the ... Then, the table will move slowly through the machine as the actual CT scanning is performed. Depending ...

  4. Abdominal and Pelvic CT

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    Full Text Available ... CT scanner is typically a large, box-like machine with a hole, or short tunnel, in the ... Then, the table will move slowly through the machine as the actual CT scanning is performed. Depending ...

  5. Computed Tomography (CT) -- Head

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    Full Text Available ... CT scanner is typically a large, box-like machine with a hole, or short tunnel, in the ... Then, the table will move slowly through the machine as the actual CT scanning is performed. Depending ...

  6. Computed Tomography (CT) -- Head

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    Full Text Available ... of the Head? What is CT Scanning of the Head? Computed tomography, more commonly known as a ... of page What are some common uses of the procedure? CT scanning of the head is typically ...

  7. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... the Sinuses? What is CT (Computed Tomography) of the Sinuses? Computed tomography, more commonly known as a ... of page What are some common uses of the procedure? CT of the sinuses is primarily used ...

  8. Thoracic spine CT scan

    Science.gov (United States)

    CAT scan - thoracic spine; Computed axial tomography scan - thoracic spine; Computed tomography scan - thoracic spine; CT scan - ... Philadelphia, PA: Elsevier Mosby; 2013:chap 44. US Food and Drug Administration. Computed tomography (CT). Updated August ...

  9. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... modality for sinusitis. CT of the sinuses is now widely available and is performed in a relatively ...

  10. Computed Tomography (CT) -- Head

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... View full size with caption Pediatric Content Some imaging tests ... Radiation Dose in X-Ray and CT Exams Blood Clots CT Perfusion of ...

  11. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... are the limitations of CT of the Sinuses? What is CT (Computed Tomography) of the Sinuses? Computed tomography, more commonly known as a CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple images or pictures of the inside of ...

  12. Abdominal and Pelvic CT

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    Full Text Available ... of CT Scanning of the Abdomen and Pelvis? What is CT Scanning of the Abdomen/Pelvis? Computed tomography, more commonly known as a CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple images or pictures of the inside of ...

  13. Computed Tomography (CT) -- Head

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    Full Text Available ... the limitations of CT Scanning of the Head? What is CT Scanning of the Head? Computed tomography, more commonly known as a CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple images or pictures of the inside of ...

  14. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... the limitations of CT of the Sinuses? What is CT (Computed Tomography) of the Sinuses? Computed tomography, more commonly known as a ... top of page What are some common uses of the procedure? CT of the sinuses is primarily ...

  15. Computed Tomography (CT) -- Head

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    Full Text Available ... limitations of CT Scanning of the Head? What is CT Scanning of the Head? Computed tomography, more commonly known as a ... top of page What are some common uses of the procedure? CT scanning of the head is ...

  16. Computed Tomography (CT) -- Head

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    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much like other x-ray examinations. Different ... CT is less sensitive to patient movement than MRI. CT can be performed if you have an ...

  17. Computed Tomography (CT) -- Head

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    Full Text Available ... Computed tomography (CT) of the head uses special x-ray equipment to help assess head injuries, severe headaches, dizziness, and other symptoms of ... content. Related Articles and Media Radiation Dose in X-Ray and CT ... Perfusion of the Head CT Angiography (CTA) Stroke Brain Tumors Computer Tomography ( ...

  18. Computed Tomography (CT) -- Head

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    Full Text Available ... contrast materials and a metallic taste in your mouth that lasts for at most a minute or ... effective imaging tool for a wide range of clinical problems. CT is less sensitive ... body after a CT examination. X-rays used in CT scans should have ...

  19. Computed Tomography (CT) -- Head

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    Full Text Available ... full size with caption Pediatric Content Some imaging tests and treatments have special pediatric considerations. The teddy bear denotes child-specific content. Related Articles and Media Radiation Dose in X-Ray and CT Exams Blood Clots CT Perfusion of the Head CT Angiography ( ...

  20. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... News Physician Resources Professions Site Index A-Z Children's (Pediatric) CT (Computed Tomography) Pediatric computed tomography (CT) ... are the limitations of Children's CT? What is Children's CT? Computed tomography, more commonly known as a ...

  1. Your Radiologist Explains CT Colonography

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    Full Text Available ... posted: Carotid Intima-Media Thickness Test Medical Imaging Costs Video: Coronary CT Angiography Video: Myelography Video: CT ... posted: Carotid Intima-Media Thickness Test Medical Imaging Costs Video: Coronary CT Angiography Video: Myelography Video: CT ...

  2. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... clinical problems. CT is less sensitive to patient movement than MRI. CT can be performed if you ... Images related to Children's (Pediatric) CT (Computed Tomography) Videos related to Children's (Pediatric) CT (Computed Tomography) Sponsored ...

  3. CT urography for hematuria.

    Science.gov (United States)

    Cowan, Nigel C

    2012-03-13

    Hematuria can signify serious disease such as bladder cancer, upper urinary tract urothelial cell carcinoma (UUT-UCC), renal cell cancer or urinary tract stones. CT urography is a rapidly evolving technique made possible by recent advances in CT technology. CT urography is defined as CT examination of the kidneys, ureters and bladder with at least one series of images acquired during the excretory phase after intravenous contrast administration. The reasoning for using CT urography to investigate hematuria is based on its high diagnostic accuracy for urothelial cell carcinoma (UCC) and favorable comparison with other imaging techniques. The optimum diagnostic imaging strategy for patients with hematuria at high-risk for UCC involves the use of CT urography as a replacement for other imaging tests (ultrasonography, intravenous urography, or retrograde ureteropyelography) and as a triage test for cystoscopy, resulting in earlier diagnosis and improved prognosis of bladder cancer, UUT-UCC, renal cell cancer and stones. Current problems with CT urography for investigating hematuria might be solved with a formative educational program simulating clinical reporting to reduce reader error, and a new technique for image-guided biopsy of UUT-UCC detected by CT urography for histopathological confirmation of diagnosis and elimination of false-positive results. CT urography is recommended as the initial imaging test for hematuria in patients at high-risk for UCC.

  4. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... Professions Site Index A-Z Children's (Pediatric) CT (Computed Tomography) Pediatric computed tomography (CT) is a fast, painless exam that uses ... limitations of Children's CT? What is Children's CT? Computed tomography, more commonly known as a CT or CAT ...

  5. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... specific content. Related Articles and Media Magnetic Resonance Imaging (MRI) - Head Head and Neck Cancer Treatment Radiation Dose in X-Ray and CT Exams Contrast Materials Head and Neck ...

  6. Computed Tomography (CT) -- Head

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    Full Text Available ... and surgical biopsy. No radiation remains in a patient's body after a CT examination. X-rays used in CT scans should have no immediate side effects. Risks There is always a slight chance of cancer from excessive exposure to radiation. However, the benefit ...

  7. Abdominal and Pelvic CT

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    Full Text Available ... and surgical biopsy. No radiation remains in a patient's body after a CT examination. X-rays used in CT scans should have no immediate side effects. Risks There is always a slight chance of cancer from excessive exposure to radiation. However, the benefit ...

  8. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... and surgical biopsy. No radiation remains in a patient's body after a CT examination. X-rays used in CT scans should have no immediate side effects. Risks There is always a slight chance of cancer from excessive exposure to radiation. However, the benefit ...

  9. Abdominal and Pelvic CT

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    Full Text Available ... CT Scanning of the Abdomen and Pelvis? What is CT Scanning of the Abdomen/Pelvis? Computed tomography, more commonly known as ... top of page What are some common uses of the procedure? This procedure is typically used to ...

  10. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much like other x-ray examinations. Different ... a relatively short time, especially when compared to magnetic resonance imaging (MRI). CT scanning is painless, noninvasive and accurate. ...

  11. Abdominal and Pelvic CT

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    Full Text Available ... have chronic pain, you may find a CT exam to be stressful. The technologist or nurse, under the direction of a physician, may offer you some medication to help you tolerate the CT scanning procedure. For exams (excluding head and neck) your head will remain ...

  12. Computed Tomography (CT) -- Head

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    Full Text Available ... time staying still, are claustrophobic or have chronic pain, you may find a CT exam to be stressful. The technologist or nurse, under the direction of a physician, may offer you some medication to help you tolerate the CT scanning procedure. ...

  13. Abdominal and Pelvic CT

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    Full Text Available ... are very nervous or anxious or have chronic pain, you may find a CT exam to be stressful. The technologist or nurse, under the direction of a physician, may offer you some medication to help you tolerate the CT scanning procedure. ...

  14. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... time staying still, are claustrophobic or have chronic pain, you may find a CT exam to be stressful. The technologist or nurse, under the direction of a physician, may offer you some medication to help you tolerate the CT scanning procedure. ...

  15. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... Videos About Us News Physician Resources Professions Site Index A-Z Computed Tomography (CT) - Sinuses Computed tomography (CT) of the sinuses uses special x-ray equipment to evaluate the paranasal sinus cavities – hollow, air-filled spaces within the bones of ...

  16. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... images or pictures of the inside of the body. The cross-sectional images generated during a CT scan can be reformatted ... of data to create two-dimensional cross-sectional images of your body, which are then displayed on a monitor. CT ...

  17. Computed Tomography (CT) -- Head

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    Full Text Available ... images or pictures of the inside of the body. The cross-sectional images generated during a CT scan can be reformatted ... of data to create two-dimensional cross-sectional images of your body, which are then displayed on a monitor. CT ...

  18. Abdominal and Pelvic CT

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    Full Text Available ... images or pictures of the inside of the body. The cross-sectional images generated during a CT scan can be reformatted ... of data to create two-dimensional cross-sectional images of your body, which are then displayed on a monitor. CT ...

  19. Computed Tomography (CT) -- Head

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    Full Text Available ... the procedure work? In many ways CT scanning works very much like other x-ray examinations. Different body parts absorb the x-rays in varying degrees. It is this crucial difference in absorption that allows the body parts to be distinguished from one another on an x-ray film or CT ...

  20. Abdominal and Pelvic CT

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    Full Text Available ... the procedure work? In many ways CT scanning works very much like other x-ray examinations. Different body parts absorb the x-rays in varying degrees. It is this crucial difference in absorption that allows the body parts to be distinguished from one another on an x-ray film or CT ...

  1. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... the procedure work? In many ways CT scanning works very much like other x-ray examinations. Different body parts absorb the x-rays in varying degrees. It is this crucial difference in absorption that allows the body parts to be distinguished from one another on an x-ray film or CT ...

  2. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... contrast materials and a metallic taste in your mouth that lasts for at most a minute or ... as the lungs, bones, and blood vessels. CT examinations are fast and ... range of clinical problems. CT is less sensitive to patient movement ...

  3. Abdominal and Pelvic CT

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    Full Text Available ... contrast materials and a metallic taste in your mouth that lasts for at most a minute or ... as the lungs, bones, and blood vessels. CT examinations are fast and ... range of clinical problems. CT is less sensitive to patient movement ...

  4. Computed Tomography (CT) -- Head

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    Full Text Available ... with a new technique called Perfusion CT. brain tumors. enlarged brain cavities (ventricles) in patients with hydrocephalus . diseases or malformations of the skull. CT scanning is also performed to: evaluate the extent of bone and soft tissue damage in patients with facial ...

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    Full Text Available ... quality for accurate interpretation. The actual CT scan takes less than a minute and the entire process ... tissue as well as the lungs, bones, and blood vessels. CT examinations are fast and ... is usually the first test ordered when a sinus tumor is suspected. If ...

  6. CT of intrahepatic lithiasis

    Energy Technology Data Exchange (ETDEWEB)

    Regge, D. [Ist. di Radiologia, Univ. di Torino, Torino (Italy); Debernardi, S. [Ist. di Radiologia, Univ. di Torino, Torino (Italy); Kienle, S. [Ist. di Radiologia, Univ. di Torino, Torino (Italy); Martina, M.C. [Ist. di Radiologia, Univ. di Torino, Torino (Italy); Biselli, S. [Ist. di Radiologia, Univ. di Torino, Torino (Italy); Gandini, G. [Ist. di Radiologia, Univ. di Torino, Torino (Italy)

    1992-12-01

    Twenty out of 65 patients, submitted to percutaneous treatment for intrahepatic stones at our department since 1983, had ultrasound (US) and computed tomography (CT) performed before any treatment. CT visualised stones in 65% of patients while distribution of stones was assessed correctly in 40%. In 5 patients CT provided information useful for treatment: in one case extremely dilated bile ducts hindered cholangiographic evaluation of lithiasis while in the other four cases CT examinations showed stones in dilated bile ducts unrecognised on percutaneous or endoscopic retrograde cholangiography. It is concluded that CT is a useful tool in the diagnosis of bile duct lithiasis. It aids in treatment selection and, when the percutaneous approach is chosen, allows the interventional radiologist to select the ducts to be catheterised. (orig.)

  7. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... CT is less sensitive to patient movement than MRI. CT can be performed if you have an implanted medical device of any kind, unlike MRI. CT imaging provides real-time imaging, making it ...

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    Full Text Available ... What are the limitations of Children's CT? What is Children's CT? Computed tomography, more commonly known as ... top of page What are some common uses of the procedure? CT is used to help diagnose ...

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    Full Text Available ... scanner. top of page How does the procedure work? In many ways, CT scanning is like other ... CT is less sensitive to patient movement than MRI. CT can be performed if you have an ...

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    Full Text Available ... Physician Resources Professions Site Index A-Z Children's (Pediatric) CT (Computed Tomography) Pediatric computed tomography (CT) is ... a CT scan. View full size with caption Pediatric Content Some imaging tests and treatments have special ...

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    Full Text Available ... or nurse at the time of the CT examination. If your child has a known contrast material ... be given to your child for the CT examination. top of page What does the CT equipment ...

  13. CT- and MR colonography

    DEFF Research Database (Denmark)

    Achiam, Michael Patrick; Bülow, Steffen; Rosenberg, J

    2002-01-01

    . Lately, CT- and MR colonography have emerged as non-invasive methods for colon imaging. METHODS: At present, CTC and MRC require bowel preparation. However, preliminary studies have been carried out without colon preparation. After the colon has been filled with air or contrast, the patient is scanned....... CONCLUSIONS: With the exponential development in computer processing power, CT- and MR colonography holds the promise for future colon examination with the advantages of non-invasiveness, no need for sedation, and probably no bowel preparation. A major disadvantage, however, is the radiation dose during CT...

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    Full Text Available ... vessels. A nurse or technologist will insert an intravenous (IV) line into a small vein in the ... you tolerate the CT scanning procedure. If an intravenous contrast material is used, you will feel a ...

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  14. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... visibility of certain tissues or blood vessels. A nurse or technologist will insert an intravenous (IV) line ... CT exam to be stressful. The technologist or nurse, under the direction of a physician, may offer ...

  15. Abdominal and Pelvic CT

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    Full Text Available ... CT exam to be stressful. The technologist or nurse, under the direction of a physician, may offer ... and send an official report to your primary care physician or physician who referred you for the ...

  16. Computed Tomography (CT) -- Head

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    Full Text Available ... CT exam to be stressful. The technologist or nurse, under the direction of a physician, may offer ... and send an official report to your primary care physician or physician who referred you for the ...

  17. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... tissue, such as organs like the heart or liver, shows up in shades of gray, and air ... Neck Cancer X-ray, Interventional Radiology and Nuclear Medicine Radiation Safety Images related to Computed Tomography (CT) - ...

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    Full Text Available ... tissue, such as organs like the heart or liver, shows up in shades of gray, and air ... Neck Cancer X-ray, Interventional Radiology and Nuclear Medicine Radiation Safety Images related to Computed Tomography (CT) - ...

  19. Computed Tomography (CT) -- Head

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  20. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... many areas of the body, particularly the lungs, abdomen, pelvis and bones. A diagnosis determined by CT scanning may eliminate the need for exploratory surgery and surgical biopsy. No radiation remains in a ...

  1. Abdominal and Pelvic CT

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    Full Text Available ... tomography (CT) scan View full size with caption Pediatric Content Some imaging tests and treatments have special pediatric considerations. The teddy bear denotes child-specific content. ...

  2. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... tomography (CT) scan. View full size with caption Pediatric Content Some imaging tests and treatments have special pediatric considerations. The teddy bear denotes child-specific content. ...

  3. Pediatric CT Scans

    Science.gov (United States)

    The Radiation Epidemiology Branch and collaborators have initiated a retrospective cohort study to evaluate the relationship between radiation exposure from CT scans conducted during childhood and adolescence and the subsequent development of cancer.

  4. Computed Tomography (CT) -- Head

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    Full Text Available ... over time. top of page What are the benefits vs. risks? Benefits CT scanning is painless, noninvasive and accurate. A ... data suggest that it is safe to continue breastfeeding after receiving intravenous contrast. For further information please ...

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    Full Text Available ... over time. top of page What are the benefits vs. risks? Benefits A CT scan is one of the safest ... data suggest that it is safe to continue breastfeeding after receiving intravenous contrast. For further information please ...

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  13. Abdominal and Pelvic CT

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  19. Abdominal and Pelvic CT

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    Full Text Available ... can be performed if you have an implanted medical device of any kind, unlike MRI. CT imaging provides ... radiation dose for this procedure varies. See the Safety page for more information about radiation dose. Women ...

  1. Abdominal and Pelvic CT

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    Full Text Available ... can be performed if you have an implanted medical device of any kind, unlike MRI. CT imaging provides ... radiation dose for this procedure varies. See the Safety page for more information about radiation dose. Women ...

  2. Abdominal and Pelvic CT

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    Full Text Available ... it will be swallowed, injected through an intravenous line (IV) or, rarely, administered by enema. Next, the ... When you enter the CT scanner, special light lines may be seen projected onto your body, and ...

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    Full Text Available ... it will be swallowed, injected through an intravenous line (IV) or, rarely, administered by enema. Next, the ... When you enter the CT scanner, special light lines may be seen projected onto your body, and ...

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    Full Text Available ... traditional x-rays, particularly of soft tissues and blood vessels. CT scanning provides more detailed information on head injuries, stroke , brain tumors and other brain diseases than regular radiographs (x-rays). top of page ...

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    Full Text Available ... is reduced. Though the scanning itself causes no pain, there may be some discomfort from having to ... time staying still, are claustrophobic or have chronic pain, you may find a CT exam to be ...

  6. Computed Tomography (CT) -- Head

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    Full Text Available ... is reduced. Though the scanning itself causes no pain, there may be some discomfort from having to ... time staying still, are claustrophobic or have chronic pain, you may find a CT exam to be ...

  7. Abdominal and Pelvic CT

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    Full Text Available ... often used to determine the cause of unexplained pain. CT scanning is fast, painless, noninvasive and accurate. ... help diagnose the cause of abdominal or pelvic pain and diseases of the internal organs, small bowel ...

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    Full Text Available ... Head and Neck Cancer Treatment Radiation Dose in X-Ray and CT Exams Contrast Materials Head and Neck Cancer X-ray, Interventional Radiology and Nuclear Medicine Radiation Safety Images ...

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    Full Text Available ... CT) scan. View full size with caption Pediatric Content Some imaging tests and treatments have special pediatric considerations. The teddy bear denotes child-specific content. Related Articles and Media Magnetic Resonance Imaging (MRI) - ...

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    Full Text Available ... CT) scan View full size with caption Pediatric Content Some imaging tests and treatments have special pediatric considerations. The teddy bear denotes child-specific content. Related Articles and Media Ultrasound - Abdomen X-ray ( ...

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    Full Text Available ... See the Safety page for more information about pregnancy and x-rays. top of page What does ... See the Safety page for more information about pregnancy and x-rays. CT scanning is, in general, ...

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    Full Text Available ... to obtain images. For children, the CT scanner technique will be adjusted to their size and the ... evaluation with additional views or a special imaging technique. A follow-up examination may also be necessary ...

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    Full Text Available ... and accurate. It’s also the most reliable imaging technique for determining if the sinuses are obstructed and ... to obtain images. For children, the CT scanner technique will be adjusted to their size and the ...

  17. Abdominal and Pelvic CT

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    Full Text Available ... CT scanning procedure. For exams (excluding head and neck) your head will remain outside the hole in ... type your comment or suggestion into the following text box: Comment: E-mail: Area code: Phone no: ...

  18. Abdominal and Pelvic CT

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    Full Text Available ... pancreatic, uterine or ovarian abnormalities, the evaluation and diagnosis with MRI may be preferable over CT scanning. top of page Additional Information and Resources RTAnswers.org: Radiation Therapy for Bladder Cancer Radiation Therapy for Colorectal Cancer ...

  19. Computed Tomography (CT) -- Head

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    Full Text Available ... medical device of any kind, unlike MRI. A diagnosis determined by CT scanning may eliminate the need ... to radiation. However, the benefit of an accurate diagnosis far outweighs the risk. The effective radiation dose ...

  20. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... particularly the lungs, abdomen, pelvis and bones. A diagnosis determined by CT scanning may eliminate the need ... to radiation. However, the benefit of an accurate diagnosis far outweighs the risk. The effective radiation dose ...

  1. Computed Tomography (CT) -- Head

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    Full Text Available ... story about radiology? Share your patient story here Images × Image Gallery Patient undergoing computed tomography (CT) scan. View ... possible charges you will incur. Web page review process: This Web page is reviewed regularly by a ...

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    Full Text Available ... story about radiology? Share your patient story here Images × Image Gallery Patient undergoing computed tomography (CT) scan View ... possible charges you will incur. Web page review process: This Web page is reviewed regularly by a ...

  3. Abdominal and Pelvic CT

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... often eliminating the need for additional, more invasive diagnostic procedures. When pain is caused by infection and ...

  4. Computed Tomography (CT) -- Head

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    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much ... for Head and Neck Cancer Others American Stroke Association National Stroke Association top of page This page ...

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    Full Text Available ... for Brain Tumors Radiation Therapy for Head and Neck Cancer Others American Stroke Association National Stroke Association ... Computer Tomography (CT) Safety During Pregnancy Head and Neck Cancer X-ray, Interventional Radiology and Nuclear Medicine ...

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    Full Text Available ... images of internal organs, bones, soft tissue and blood vessels provide greater detail than traditional x-rays, particularly of soft tissues and blood vessels. A CT scan of the face produces images ...

  7. Computed Tomography (CT) -- Head

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    Full Text Available ... images of internal organs, bones, soft tissue and blood vessels provide greater detail than traditional x-rays, particularly of soft tissues and blood vessels. CT scanning provides more detailed information on head ...

  8. Abdominal and Pelvic CT

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    Full Text Available ... sometimes compared to looking into a loaf of bread by cutting the loaf into thin slices. When ... CT scanning procedure. For exams (excluding head and neck) your head will remain outside the hole in ...

  9. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... images of internal organs, bones, soft tissue and blood vessels provide greater detail than traditional x-rays, particularly of soft tissues and blood vessels. A CT scan of the face produces ...

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    Full Text Available ... images of internal organs, bones, soft tissue and blood vessels provide greater detail than traditional x-rays, particularly of soft tissues and blood vessels. CT scanning provides more detailed information on ...

  11. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... artifacts on the images. This loss of image quality can resemble the blurring seen on a photograph ... verifies that the images are of high enough quality for accurate interpretation. The actual CT scan takes ...

  12. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... other medical conditions and whether you have a history of heart disease, asthma, diabetes, kidney disease or ... Neck Cancer X-ray, Interventional Radiology and Nuclear Medicine Radiation Safety Images related to Computed Tomography (CT) - ...

  13. Computed Tomography (CT) -- Head

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    Full Text Available ... other medical conditions and whether you have a history of heart disease, asthma, diabetes, kidney disease or ... Neck Cancer X-ray, Interventional Radiology and Nuclear Medicine Radiation Safety Images related to Computed Tomography (CT) - ...

  14. Computed Tomography (CT) -- Head

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    Full Text Available ... this crucial difference in absorption that allows the body parts to be distinguished from one another on an x-ray film or CT electronic image. In a conventional x-ray exam, a small ...

  15. Abdominal and Pelvic CT

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    Full Text Available ... this crucial difference in absorption that allows the body parts to be distinguished from one another on an x-ray film or CT electronic image. In a conventional x-ray exam, a small ...

  16. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... this crucial difference in absorption that allows the body parts to be distinguished from one another on an x-ray film or CT electronic image. In a conventional x-ray exam, a small ...

  17. Pelvic CT scan

    Science.gov (United States)

    ... bones. Single CT images are called slices. The images are stored on a computer, viewed on a monitor, or printed on film. Three-dimensional models of the body area can be created by stacking the slices ...

  18. Computed Tomography (CT) -- Head

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... membranes covering the brain. top of page Additional Information and Resources RTAnswers.org Radiation Therapy for Brain ...

  19. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... for the moving table. top of page Additional Information and Resources RTAnswers.org Radiation Therapy for Head ...

  20. Abdominal and Pelvic CT

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    Full Text Available ... to remain still for several minutes and with placement of an IV. If you have a hard ... imaging tool for a wide range of clinical problems. CT is less sensitive to patient movement than ...

  1. Abdominal and Pelvic CT

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    Full Text Available ... liver, shows up in shades of gray, and air appears black. With CT scanning, numerous x-ray ... speak with you through a built-in intercom system. With pediatric patients, a parent may be allowed ...

  2. Computed Tomography (CT) -- Head

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    Full Text Available ... liver, shows up in shades of gray, and air appears black. With CT scanning, numerous x-ray ... speak with you through a built-in intercom system. With pediatric patients, a parent may be allowed ...

  3. Abdominal and Pelvic CT

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    Full Text Available ... liver, shows up in shades of gray, and air appears black. With CT scanning, numerous x-ray ... cause blurring of the images and degrade the quality of the examination the same way that it ...

  4. Computed Tomography (CT) -- Head

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    Full Text Available ... liver, shows up in shades of gray, and air appears black. With CT scanning, numerous x-ray ... cause blurring of the images and degrade the quality of the examination the same way that it ...

  5. Abdominal and Pelvic CT

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    Full Text Available ... and send an official report to your primary care physician or physician who referred you for the ... can be performed if you have an implanted medical device of any kind, unlike MRI. CT imaging ...

  6. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... and send an official report to your primary care physician or physician who referred you for the ... can be performed if you have an implanted medical device of any kind, unlike MRI. CT imaging ...

  7. Arm CT scan

    Science.gov (United States)

    CAT scan - arm; Computed axial tomography scan - arm; Computed tomography scan - arm; CT scan - arm ... stopping.) A computer creates separate images of the arm area, called slices. These images can be stored, ...

  8. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... exam. You may also be asked to remove hearing aids and removable dental work. Women will be ... distinguished from one another on an x-ray film or CT electronic image. In a conventional x- ...

  9. Abdominal and Pelvic CT

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    Full Text Available ... exam. You may also be asked to remove hearing aids and removable dental work. Women will be ... distinguished from one another on an x-ray film or CT electronic image. In a conventional x- ...

  10. Computed Tomography (CT) -- Head

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... The teddy bear denotes child-specific content. Related Articles and Media Radiation Dose in X-Ray and ...

  11. Abdominal and Pelvic CT

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    Full Text Available ... Abdomen and Pelvis? What is CT Scanning of the Abdomen/Pelvis? Computed tomography, more commonly known as ... of page What are some common uses of the procedure? This procedure is typically used to help ...

  12. Abdominal and Pelvic CT

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    Full Text Available ... or liver cirrhosis. cancers of the liver, kidneys, pancreas, ovaries and bladder as well as lymphoma. kidney ... and organs such as the liver, kidneys and pancreas. When you enter the CT scanner, special light ...

  13. Computed Tomography (CT) -- Head

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    Full Text Available ... path. A special computer program processes this large volume of data to create two-dimensional cross-sectional ... many types of tissue as well as the lungs, bones, and blood vessels. CT examinations are fast ...

  14. Abdominal and Pelvic CT

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    Full Text Available ... path. A special computer program processes this large volume of data to create two-dimensional cross-sectional ... many types of tissue as well as the lungs, bones, and blood vessels. CT examinations are fast ...

  15. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... path. A special computer program processes this large volume of data to create two-dimensional cross-sectional ... many types of tissue as well as the lungs, bones, and blood vessels. CT examinations are fast ...

  16. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... detailed images of many types of tissue as well as the lungs, bones, and blood vessels. CT ... iodine is extremely rare, and radiology departments are well-equipped to deal with them. Because children are ...

  17. Computed Tomography (CT) -- Head

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    Full Text Available ... detailed images of many types of tissue as well as the lungs, bones, and blood vessels. CT ... iodine is extremely rare, and radiology departments are well-equipped to deal with them. Because children are ...

  18. Abdominal and Pelvic CT

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    Full Text Available ... other medical conditions and whether you have a history of heart disease, asthma, diabetes, kidney disease or ... detailed images of many types of tissue as well as the lungs, bones, and blood vessels. CT ...

  19. Computed Tomography (CT) -- Head

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    Full Text Available ... other medical conditions and whether you have a history of heart disease, asthma, diabetes, kidney disease or ... detailed images of many types of tissue as well as the lungs, bones, and blood vessels. CT ...

  20. Abdominal and Pelvic CT

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    Full Text Available ... be asked to remove hearing aids and removable dental work. Women will be asked to remove bras ... Safety page for more information about pregnancy and x-rays. top of page What does the CT equipment ...

  1. Computed Tomography (CT) -- Head

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    Full Text Available ... conventional CT scanner or may be over the weight limit—usually 450 pounds—for the moving table. ... and is further reviewed by committees from the American College of Radiology (ACR) and the Radiological Society ...

  2. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... conventional CT scanner or may be over the weight limit—usually 450 pounds—for the moving table. ... and is further reviewed by committees from the American College of Radiology (ACR) and the Radiological Society ...

  3. Abdominal and Pelvic CT

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    Full Text Available ... conventional CT scanner or may be over the weight limit—usually 450 pounds—for the moving table. ... and is further reviewed by committees from the American College of Radiology (ACR) and the Radiological Society ...

  4. Computed Tomography (CT) -- Head

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    Full Text Available ... to remove hearing aids and removable dental work. Women will be asked to remove bras containing metal ... have diabetes —particularly if you are taking Glucophage . Women should always inform their physician and the CT ...

  5. Abdominal and Pelvic CT

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    Full Text Available ... to remove hearing aids and removable dental work. Women will be asked to remove bras containing metal ... increase the risk of an unusual adverse effect. Women should always inform their physician and the CT ...

  6. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... to remove hearing aids and removable dental work. Women will be asked to remove bras containing metal ... increase the risk of an unusual adverse effect. Women should always inform their physician and the CT ...

  7. [Cardiac CT: new applications].

    Science.gov (United States)

    Pesenti-Rossi, D; Baron, N; Allouch, P; Convers, R; Gibault-Genty, G; Aubert, S

    2014-11-01

    Since the introduction of the 64-generation scanners, the accuracy and robustness of the diagnosis of coronary artery disease has progressed. The main advantage of cardiac CT is the exclusion of coronary artery disease by its excellent negative predictive value. Currently, cardiac CT applications extend thanks to innovations both in terms of technological development systems scanner or stents implanted, that the evolution of surgical procedures such as TAVI. Copyright © 2014 Elsevier Masson SAS. All rights reserved.

  8. Pediatric CT angiography

    Energy Technology Data Exchange (ETDEWEB)

    Siegel, M.J. [Mallinckrodt Inst. of Radiology, Washington Univ. Medical School, St. Louis, MO (United States)

    2005-11-15

    Advances in CT technology are having profound impact on imaging children and have made CT angiography possible even in neonates. Even with the tiny anatomy of neonates, small volumes of contrast material, and small venous access catheters, successful CT angiography can be performed with attention to detail. Meticulous attention to patient preparation, the proper selection of technical factors, and optimal delivery of contrast material are crucial. Data post-processing and the creation of 3-D reconstructions are also essential in establishing a correct diagnosis. The applications fo CT angiography are different in children than in adults and most applications in children involve assessment of congenital and postoperative vascular and cardiac diseases. The use of CT angiography offers the opportunity to eliminate the long periods of sedation associated with MR and reduce the radiation exposure associated with conventional angiography. Generally, the benefits of CT angiography in children outweigh the risk, namely that of radiation exposure. However, care must still be taken to minimize the radiation exposure. (orig.)

  9. Decreased Bacterial Attachment and Protein Adsorption to Coatings Produced by Low Enegy Plasma Polymerization

    DEFF Research Database (Denmark)

    Andersen, T.E.; Kingshott, Peter; Benter, M.

    adsorption and bacteria attachment/colonization. This is emphasized by the fact that long dwelling urinary catheters, which is a typical silicone medical device, causes 5% per day incidence of urinary tract infection [1,2]. A demand therefore exists for surface modifications providing the silicone material......Introduction Silicone rubber is among the most biocompatible materials available, exhibiting low levels of extractables, absence of plasticizers and additives and fairly low activation of blood thrombogenesis components. However untreated silicone rubber does not efficiently resist protein...... and Methods: Coatings: Plasma polymerized poly(vinyl pyrrolidone) (PP-PVP), poly(2-methoxyethyl methacrylate) (PPPMEA) or an inorganic oxide (10) coating were applied onto medical grade silicon rubber sheets (Silopren LSR 2050, Momentive Performance Materials Inc.). Plasma polymerization chamber...

  10. Pulmonary paragonimiasis: CT findings

    Energy Technology Data Exchange (ETDEWEB)

    Kook, Shin Ho; Suh, Sang Gyeong; Na, Sun Young; Kwon, Hae Su; Oh, Won Ja [Koryo General Hospital, Seoul (Korea, Republic of)

    1992-09-15

    Though the incidence of paragonimiasis has been remarkably decreased since 1970, it is still not a rare disease in Korea. Major problems in the diagnosis of pulmonary paragonimiasis on chest radiography are its differentiation from pulmonary tuberculosis and lung cancer. Chest radiographic findings have been described in detail, but little have been reported on CT findings. We reviewed CT findings of 10 patients with pulmonary paragonimiasis. The characteristic CT findings were similar to those on chest radiography, such as air-space consolidation (70%), nodular mass (50%), pleural effusion (40%), cystic lesion(30%), small low density within the mass (30%), linear density (20%), pneumothorax (20%), and burrow track (20%). CT depicted cystic lesions and the burrow tracks more clearly and showed the small worm-retaining cysts within the mass that were not detectable on chest radiography. In conclusion, all of those CT findings are useful in the diagnosis of pulmonary paragonimiasis especially when differentiation from tuberculosis or lung cancer difficult on chest radiography.

  11. CT findings of fibromatoses

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Hak Nam; Choi, Yeon Hwa; Shin, Hyun Jun [Lee Rha Hospital, Chung Ju (Korea, Republic of)

    1991-03-15

    Fibromatoses constitute a group of benign fibroblastic soft tissue tumors with a tendency for local invasion and recurrence. CT provides excellent anatomic detail of soft tissue tumors and precise location, size, and extent of the tumors. The authors evaluated 7 CT scans of 6 pathologically proven aggressive fibromatoses during the last 4 years. Five lesions arose in the lower extremities: 4 in the buttocks and 1 in the thigh. One lesion arose in the upper back. The tumors were lobulated in contour and varied in size from 3.7 cm to 10.7 cm. Fibromatosis tumors were usually hypodense with muscle when no contrast medium was used and hyperdense with better delineation during infusion of the contrast medium. Three patients had recurrent disease after surgical removal. Fibromatosis may infiltrate the surrounding tissue beyond the margins, indicated on CT scans and by palpation at operation. Therefore the surgeon should plan a wide resection around the apparent limits of the fibromatosis.

  12. CT urography and hematuria

    DEFF Research Database (Denmark)

    Bretlau, Thomas; Hansen, Rasmus H; Thomsen, Henrik S

    2015-01-01

    undergoing CT urography due to hematuria. The patients were followed for 3 years. RESULTS: A total of 771 patients had hematuria diagnosed at the time of referral. In 137 patients (18%), a tumor and / or a complex cyst was found in the urinary tract (renal, ureteral, or bladder), in 68 (9%) a calculi, in 118...... or complex cyst was found in the kidneys or the ureters in patients with nonvisible hematuria. CONCLUSION: CT urography with its low dose of contrast medium and radiation is a useful diagnostic imaging test for investigating patients with hematuria....

  13. Computed Tomography (CT) -- Sinuses

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    Full Text Available Toggle navigation Test/Treatment Patient Type Screening/Wellness Disease/Condition Safety En Español More Info Images/Videos About Us News Physician ... CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple images ...

  14. Computed Tomography (CT) -- Head

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    Full Text Available Toggle navigation Test/Treatment Patient Type Screening/Wellness Disease/Condition Safety En Español More Info Images/Videos About Us News Physician ... CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple images ...

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    Full Text Available ... denotes child-specific content. Related Articles and Media Magnetic Resonance Imaging (MRI) - Head Head and Neck Cancer Treatment Radiation Dose in X-Ray and CT Exams Contrast Materials Head and Neck Cancer X-ray, Interventional Radiology ...

  16. Abdominal and Pelvic CT

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    Full Text Available ... injuries to abdominal organs such as the spleen, liver, kidneys or other internal organs in cases of trauma. CT scanning of the abdomen/pelvis is also performed to: guide biopsies and other procedures such as abscess drainages and ...

  17. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... Computed tomography (CT) of the sinuses uses special x-ray equipment to evaluate the paranasal sinus cavities – hollow, ... is a diagnostic medical test that, like traditional x-rays, produces multiple images or pictures of the inside ...

  18. Computed Tomography (CT) -- Head

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    Full Text Available ... Computed tomography (CT) of the head uses special x-ray equipment to help assess head injuries, severe headaches, ... is a diagnostic medical test that, like traditional x-rays, produces multiple images or pictures of the inside ...

  19. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... a relatively short time, especially when compared to magnetic resonance imaging (MRI). CT scanning is painless, noninvasive and accurate. ... the extent of soft tissue of the tumor, magnetic resonance imaging (MRI) may be helpful. A person who is ...

  20. Computed Tomography (CT) -- Head

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    Full Text Available ... See the Safety page for more information about pregnancy and x-rays. CT scanning is, in general, not recommended for pregnant women unless medically necessary because of potential risk to the baby. This risk is, however, minimal ...

  1. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... See the Safety page for more information about pregnancy and x-rays. CT scanning is, in general, not recommended for pregnant women unless medically necessary because of potential risk to the fetus in the womb. Manufacturers of ...

  2. Abdominal and Pelvic CT

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    Full Text Available ... top of page What are the benefits vs. risks? Benefits Viewing a CT scan, an experienced radiologist can diagnose many causes of abdominal pain or injury from trauma with very high accuracy, enabling faster treatment and often eliminating the ...

  3. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... images or pictures of the inside of the body. The cross-sectional images generated during a CT scan can be reformatted ... at and passes through the part of the body being examined, recording an image on a special electronic image recording plate. Bones ...

  4. Computed Tomography (CT) -- Head

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    Full Text Available ... images or pictures of the inside of the body. The cross-sectional images generated during a CT scan can be reformatted ... at and passes through the part of the body being examined, recording an image on a special electronic image recording plate. Bones ...

  5. Abdominal and Pelvic CT

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    Full Text Available ... images or pictures of the inside of the body. The cross-sectional images generated during a CT scan can be reformatted ... at and passes through the part of the body being examined, recording an image on a special electronic image recording plate. Bones ...

  6. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... 10 minutes. top of page What will I experience during and after the procedure? CT exams are ... areas. Outside links: For the convenience of our users, RadiologyInfo .org provides links to relevant websites. RadiologyInfo. ...

  7. Computed Tomography (CT) -- Head

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    Full Text Available ... 10 minutes. top of page What will I experience during and after the procedure? CT exams are ... areas. Outside links: For the convenience of our users, RadiologyInfo .org provides links to relevant websites. RadiologyInfo. ...

  8. Abdominal and Pelvic CT

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    Full Text Available ... to arriving. top of page What will I experience during and after the procedure? CT exams are ... areas. Outside links: For the convenience of our users, RadiologyInfo .org provides links to relevant websites. RadiologyInfo. ...

  9. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much like other x-ray examinations. Different ... a few seconds, and even faster in small children. Such speed is beneficial for all patients but ...

  10. Computed Tomography (CT) -- Head

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    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much like other x-ray examinations. Different ... a few seconds, and even faster in small children. Such speed is beneficial for all patients but ...

  11. Abdominal and Pelvic CT

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    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much like other x-ray examinations. Different ... a few seconds, and even faster in small children. Such speed is beneficial for all patients but ...

  12. Abdominal and Pelvic CT

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    Full Text Available ... have a history of heart disease, asthma, diabetes, kidney disease or thyroid problems. Any of these conditions may increase the risk of an unusual adverse effect. Women should always ... such as the liver, kidneys and pancreas. When you enter the CT scanner, ...

  13. Computed Tomography (CT) -- Head

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    Full Text Available ... Rotating around you, the x-ray tube and electronic x-ray detectors are located opposite each other ... another on an x-ray film or CT electronic image. In a conventional x-ray exam, a ...

  14. Abdominal and Pelvic CT

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    Full Text Available ... Rotating around you, the x-ray tube and electronic x-ray detectors are located opposite each other ... another on an x-ray film or CT electronic image. In a conventional x-ray exam, a ...

  15. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... Rotating around you, the x-ray tube and electronic x-ray detectors are located opposite each other ... another on an x-ray film or CT electronic image. In a conventional x-ray exam, a ...

  16. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... as a CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces ... of heart disease, asthma, diabetes, kidney disease or thyroid problems. Any of ... chance of cancer from excessive exposure to radiation. However, the benefit ...

  17. Computed Tomography (CT) -- Head

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    Full Text Available ... as a CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces ... in the paranasal sinuses. plan radiation therapy for cancer ... kidney disease or thyroid problems. Any of these conditions may increase the ...

  18. Abdominal and Pelvic CT

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    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much like other x-ray examinations. Different ... the scanner at one time such as with MRI. If an intravenous contrast material is used, you ...

  19. Abdominal and Pelvic CT

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    Full Text Available ... you through a built-in intercom system. With pediatric patients, a parent may be allowed in the room ... Share your patient story here Images × Image Gallery Patient undergoing computed tomography (CT) scan View full size with caption Pediatric Content Some imaging tests and treatments have special ...

  20. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... you through a built-in intercom system. With pediatric patients, a parent may be allowed in the room ... Share your patient story here Images × Image Gallery Patient undergoing computed tomography (CT) scan. View full size with caption Pediatric Content Some imaging tests and treatments have special ...

  1. Computed Tomography (CT) -- Head

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    Full Text Available ... you through a built-in intercom system. With pediatric patients, a parent may be allowed in the room ... Share your patient story here Images × Image Gallery Patient undergoing computed tomography (CT) scan. View full size with caption Pediatric Content Some imaging tests and treatments have special ...

  2. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... of page Additional Information and Resources RTAnswers.org Radiation Therapy for Head and Neck Cancer top of page This page was reviewed on June 21, 2016 Send us your feedback Did you find the information you were looking for? Yes ... Resonance Imaging (MRI) - Head Head and Neck Cancer Treatment Radiation Dose in X-Ray and CT Exams Contrast ...

  3. Lumbosacral spine CT

    Science.gov (United States)

    ... CT scan may still be done if the benefits greatly outweigh the risks. For example, it can be more risky not to have the exam if your provider thinks you might have cancer. Pregnant or breastfeeding women should consult their provider about the risk ...

  4. Abdominal and Pelvic CT

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    Full Text Available ... have special pediatric considerations. The teddy bear denotes child-specific content. Related Articles and Media Ultrasound - Abdomen X-ray (Radiography) - Lower GI Tract X-ray (Radiography) - Upper GI Tract Colorectal Cancer Images related to Computed Tomography (CT) - Abdomen and ...

  5. Abdominal and Pelvic CT

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    Full Text Available ... measuring the amount of radiation being absorbed throughout your body. Sometimes, the examination table will move during the ... to create two-dimensional cross-sectional images of your body, which are then displayed on a monitor. CT ...

  6. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much like other x-ray examinations. Different ... radiation dose for this procedure varies. See the Safety page for more information about radiation dose. Women ...

  7. Computed Tomography (CT) -- Head

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    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much like other x-ray examinations. Different ... radiation dose for this procedure varies. See the Safety page for more information about radiation dose. Women ...

  8. Abdominal and Pelvic CT

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    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much like other x-ray examinations. Different ... radiation dose for this procedure varies. See the Safety page for more information about radiation dose. Women ...

  9. Abdominal and Pelvic CT

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    Full Text Available ... speed is beneficial for all patients but especially children, the elderly and critically ill, all of whom may have difficulty in remaining still, even for the brief time necessary to obtain images. For children, the CT scanner technique will be adjusted to ...

  10. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... speed is beneficial for all patients but especially children, the elderly and critically ill, all of whom may have difficulty in remaining still, even for the brief time necessary to obtain images. For children, the CT scanner technique will be adjusted to ...

  11. Computed Tomography (CT) -- Head

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    Full Text Available ... speed is beneficial for all patients but especially children, the elderly and critically ill, all of whom may have difficulty in remaining still, even for the brief time necessary to obtain images. For children, the CT scanner technique will be adjusted to ...

  12. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... to wait until the technologist verifies that the images are of high enough quality for accurate interpretation. The actual CT scan takes less than a minute and the entire process is usually completed within 10 minutes. top of ...

  13. Computed Tomography (CT) -- Sinuses

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    Full Text Available Toggle navigation Test/Treatment Patient Type Screening/Wellness Disease/Condition Safety En Español More Info Images/Videos About Us News Physician Resources Professions Site Index A-Z Computed Tomography (CT) - Sinuses ...

  14. Abdominal and Pelvic CT

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    Full Text Available Toggle navigation Test/Treatment Patient Type Screening/Wellness Disease/Condition Safety En Español More Info Images/Videos About Us News Physician Resources Professions Site Index A-Z Computed Tomography (CT) - Abdomen ...

  15. Computed Tomography (CT) -- Head

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    Full Text Available Toggle navigation Test/Treatment Patient Type Screening/Wellness Disease/Condition Safety En Español More Info Images/Videos About Us News Physician Resources Professions Site Index A-Z Computed Tomography (CT) - Head ...

  16. Abdominal and Pelvic CT

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    Full Text Available ... of data to create two-dimensional cross-sectional images of your body, which are then displayed on a monitor. CT ... during the scanning. Any motion, whether breathing or body movements, can lead to artifacts on the images. This loss of image quality can resemble the ...

  17. Computed Tomography (CT) -- Head

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    Full Text Available ... of data to create two-dimensional cross-sectional images of your body, which are then displayed on a monitor. CT ... during the scanning. Any motion, whether breathing or body movements, can lead to artifacts on the images. This loss of image quality can resemble the ...

  18. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... of data to create two-dimensional cross-sectional images of your body, which are then displayed on a monitor. CT ... during the scanning. Any motion, whether breathing or body movements, can lead to artifacts on the images. This loss of image quality can resemble the ...

  19. Computed Tomography (CT) -- Head

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    Full Text Available ... can be performed if you have an implanted medical device of any kind, unlike MRI. A diagnosis determined by CT scanning may eliminate the need for exploratory surgery and surgical biopsy. No radiation remains in a patient's body ...

  20. Computed Tomography (CT) -- Head

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    Full Text Available ... with a new technique called Perfusion CT. brain tumors. enlarged brain cavities (ventricles) in patients with hydrocephalus . diseases or ... in the paranasal sinuses. plan radiation therapy for cancer of the brain or other tissues. guide the passage of a ...

  1. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... for several minutes. If you have a hard time staying still, are claustrophobic or have chronic pain, you may find ... if a finding is stable or changed over time. top of page What are the benefits vs. risks? Benefits A CT scan ...

  2. Computed Tomography (CT) -- Head

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    Full Text Available ... for several minutes. If you have a hard time staying still, are claustrophobic or have chronic pain, you may find ... if a finding is stable or changed over time. top of page What are the benefits vs. risks? Benefits CT scanning is ...

  3. Abdominal and Pelvic CT

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    Full Text Available ... of an IV. If you have a hard time staying still, are very nervous or anxious or have chronic pain, ... if a finding is stable or changed over time. top of page What are the benefits vs. risks? Benefits Viewing a CT ...

  4. Abdominal aspergillosis: CT findings

    Energy Technology Data Exchange (ETDEWEB)

    Yeom, Suk Keu, E-mail: pagoda20@hanmail.net [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of); Kim, Hye Jin, E-mail: kimhyejin@amc.seoul.kr [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of); Byun, Jae Ho, E-mail: jhbyun@amc.seoul.kr [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of); Kim, Ah Young, E-mail: aykim@amc.seoul.kr [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of); Lee, Moon-Gyu, E-mail: mglee@amc.seoul.kr [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of); Ha, Hyun Kwon, E-mail: hkha@amc.seoul.kr [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of)

    2011-03-15

    Objective: In order to retrospectively evaluate the CT findings of abdominal aspergillosis in immunocompromised patients. Materials and methods: CT scans were reviewed with regard to the sites, number, morphologic appearance, attenuation, and the contrast enhancement patterns of the lesions in six patients (5 women, 1 man; mean age, 43.4 years; range, 23-59 years) with pathologically proved abdominal aspergillosis by two gastrointestinal radiologists in consensus. Medical records were also reviewed to determine each patient's clinical status and outcome. Results: All patients were immunocompromised state: 4 patients received immunosuppressive therapy for solid organ transplantation and 2 patients received chemotherapy for acute myeloid leukemia. Aspergillosis involved blood vessels (n = 3), liver (n = 2), spleen (n = 2), gastrointestinal tract (n = 2), native kidney (n = 1), transplanted kidney (n = 1), peritoneum (n = 1), and retroperitoneum (n = 1). CT demonstrated solid organ or bowel infarction or perforation secondary to vascular thrombosis or pseudoaneurysm, multiple low-attenuating lesions of solid organs presenting as abscesses, concentric bowel wall thickening mimicking typhlitis, or diffuse or nodular infiltration of the peritoneum and retroperitoneum. Conclusion: Familiarity with findings commonly presenting as angioinvasive features or abscesses on CT, may facilitate the diagnosis of rare and fatal abdominal aspergillosis.

  5. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... during the procedure. Metal objects, including jewelry, eyeglasses, dentures and hairpins, may affect the CT images and should be left at home or removed prior to your exam. You may also be asked to remove hearing aids and removable dental work. Women will be asked to remove ...

  6. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... during the procedure. Metal objects, including jewelry, eyeglasses, dentures and hairpins, may affect the CT images and should be left at home or removed prior to your exam. You may also be asked to remove hearing aids and removable dental work. Women will be asked to remove ...

  7. Abdominal and Pelvic CT

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    Full Text Available ... during the procedure. Metal objects, including jewelry, eyeglasses, dentures and hairpins, may affect the CT images and should be left at home or removed prior to your exam. You may also be asked to remove hearing aids and removable dental work. Women will be asked to remove ...

  8. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... also be discussed with the CT technologist or nurse at the time of the CT examination. If ... difficulty breathing, you should notify the technologist or nurse, as it may indicate a more severe allergic ...

  9. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... images or pictures of the inside of the body. The cross-sectional images generated during a CT ... be performed to evaluate blood vessels throughout the body. With CT, it is possible to obtain very ...

  10. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... scanner is typically a large machine with a hole, or short tunnel, in the center. A moveable ... scanners to obtain multiple slices in a single rotation. These scanners, called "multislice CT" or "multidetector CT," ...

  11. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... vessels. CT scans may be performed on newborns, infants and older children. top of page What are ... heart and blood vessels in children, even newborn infants. Except for the chest x-ray, CT is ...

  12. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... injuries and bleeding quickly enough to help save lives. CT has been shown to be a cost- ... obtained by CT scanning. Working together, your primary care physician or pediatrician and the radiologist will decide ...

  13. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... the body, in a shorter period of time. Modern CT scanners are so fast that they can ... ensure that he/she is properly positioned. With modern CT scanners, your child will hear only slight ...

  14. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... with the CT technologist or nurse at the time of the CT examination. If your child has ... detectors rotate around the patient. At the same time, the examination table is moving through the scanner, ...

  15. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... outside of the CT scanner itself is very low. If you suspect you may be pregnant, however, ... cause cancer. However, CT scans result in a low-level exposure. Whether such levels cause cancer is ...

  16. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... CT scans that are not clearly needed. Another strategy is to consider other tests, such as MRI ... sensitive to radiation, they should have a CT study only if it is essential for making a ...

  17. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... the technologist determines that the images are of high enough quality for the radiologist to read. top ... to obtain CT images. It is known that high levels of radiation may cause cancer. However, CT ...

  18. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... benefits vs. risks? Benefits Using a multidetector CT unit to examine children is faster than the older ... CT scanning may eliminate the need for exploratory surgery and surgical biopsy. No radiation remains in a ...

  19. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... of page How should we prepare for the CT scan? Your child should wear comfortable, loose-fitting clothing ... technologist, the specialist who will be performing the CT scan. Your child may be asked not to eat ...

  20. Your Radiologist Explains CT Colonography

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    Full Text Available ... Video: Pelvic Ultrasound Radiology and You Sponsored by Image/Video Gallery Your Radiologist Explains CT Colonography (Virtual ... to allow for inflation with air while CT images are being taken. If you’re scheduled for ...

  1. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... radiologist to read. top of page What will my child experience during and after the procedure? CT ... sensitive to radiation, they should have a CT study only if it is essential for making a ...

  2. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... blood vessels. CT scans may be performed on newborns, infants and older children. top of page What ... the heart and blood vessels in children, even newborn infants. Except for the chest x-ray, CT ...

  3. Your Radiologist Explains CT Colonography

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    Full Text Available ... Pelvic Ultrasound Radiology and You Sponsored by Image/Video Gallery Your Radiologist Explains CT Colonography (Virtual colonoscopy) ... asked to wear a gown. After the CT scan you can return to your normal diet and ...

  4. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... scanner. top of page How does the procedure work? In many ways, CT scanning is like other ... radiation children may receive from a CT scan. One of the best ways of limiting radiation exposure ...

  5. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... sensitive to radiation, they should have a CT study only if it is essential for making a diagnosis and should not have repeated CT studies unless absolutely necessary. top of page What are ...

  6. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... top of page What are the benefits vs. risks? Benefits Using a multidetector CT unit to examine ... CT scans should have no immediate side effects. Risks The risk of serious allergic reaction to contrast ...

  7. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... of page What are some common uses of the procedure? CT is used to help diagnose a ... top of page How should we prepare for the CT scan? Your child should wear comfortable, loose- ...

  8. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... risks? What are the limitations of Children's CT? What is Children's CT? Computed tomography, more commonly known as a CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple images or pictures of the inside of ...

  9. CT classification of acetabular fractures

    Energy Technology Data Exchange (ETDEWEB)

    Marincek, B.; Porcellini, B.; Robotti, G.

    1984-05-01

    The contribution of computed tomography (CT) in classifying acetabular fractures was analysed retrospectively in 33 cases. CT and plain radiography classification agreed in 27 cases (82%). CT revealed more extensive fractures in 6 patients (thereof 5 patients with associated fractures). In 10 patients (thereof 9 patients with associated fractures) CT showed intraarticular fragments; radiographically intraarticular fragments were seen only in 2 patients and suspected in 4. CT is of considerable aid in defining the fracture pattern. It should be used mainly in patients with radiographically difficult interpretable associated fractures in order to assess preoperatively the weight-bearing part of the acetabulum, the degree of displacement and the presence of intraarticular fragments.

  10. Helical CT for lumbosacral spinal

    Energy Technology Data Exchange (ETDEWEB)

    Tatsuno, Satoshi; Fukuda, Kunihiko [Jikei Univ., Tokyo (Japan). School of Medicine

    1996-10-01

    The aim of this study was to investigate the efficacy of helical CT for lumbosacral pathology. We performed helical CT with multiplanar reconstruction, including the formation of oblique transaxial and coronal images, in 62 patients with various lumboscral disorders, including 32 non-enhanced CT and 36 CT after myelography. We correlated the appearance of the stenotic spinal canal and neoplastic disease with the findings on MRI obtained at nearly the same time. We obtained helical CT images in all cases in about 30 seconds. The diagnostic ability of helical CT was roughly equal to that of MRI in patients with spondylosis deformans, spondylolisthesis and herniated nucleus pulposus. There was no significant difference in diagnostic value for degenerative lumbosacral disease with canal and foraminal stenosis between non-enhanced and post-myelography helical CT. However, non-enhanced helical CT could not clearly demonstrate neoplastic disease because of the poor contrast resolution. Helical CT was useful in evaluating degenerative disorder and its diagnostic value was nearly equal to that of MRI. We considered that helical CT may be suitable for the assessment of patients with severe lumbago owing to the markedly shortened examination time. However, if helical CT is used as a screening method for lumbosacral disease, one must be careful of its limitations, for example, poor detectability of neoplastic disease, vascular anomalies and so on. (author)

  11. Dynamic CT myocardial perfusion imaging

    Energy Technology Data Exchange (ETDEWEB)

    Caruso, Damiano [Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (United States); Department of Radiological Sciences, Oncological and Pathological Sciences, University of Rome “Sapienza”, Latina (Italy); Eid, Marwen [Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (United States); Schoepf, U. Joseph, E-mail: schoepf@musc.edu [Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (United States); Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, SC (United States); Jin, Kwang Nam [Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (United States); Department of Radiology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul (Korea, Republic of); Varga-Szemes, Akos [Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (United States); Tesche, Christian [Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (United States); Department of Cardiology and Intensive Care Medicine, Heart Center Munich-Bogenhausen, Munich (Germany); Mangold, Stefanie [Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (United States); Department of Diagnostic and Interventional Radiology, University Hospital of Tuebingen, Tuebingen (Germany); and others

    2016-10-15

    Highlights: • CT myocardial perfusion provides functional assessment of the myocardium. • CCTA is limited in determining the hemodynamic significance of coronary stenosis. • CT-MPI can accurately detect hemodynamically significant coronary artery stenosis. - Abstract: Non-invasive cardiac imaging has rapidly evolved during the last decade due to advancements in CT based technologies. Coronary CT angiography has been shown to reliably assess coronary anatomy and detect high risk coronary artery disease. However, this technique is limited to anatomical assessment, thus non-invasive techniques for functional assessment of the heart are necessary. CT myocardial perfusion is a new CT based technique that provides functional assessment of the myocardium and allows for a comprehensive assessment of coronary artery disease with a single modality when combined with CTA. This review aims to discuss dynamic CT myocardial perfusion as a new technique in the assessment of CAD.

  12. CT findings of ganglioneuroma

    Energy Technology Data Exchange (ETDEWEB)

    Jeon, Tae Joo; Yoon, Choon Sik; Kim, Myung Jun; Kim, Sang Jin; Oh, Ki Keun [Yonsei Univ., College of Medicine, Seoul (Korea, Republic of)

    1998-09-01

    Ganglioneuroma is a relatively uncommon benign tumor and has no pathognomonic radiological findings;diagnosis is therefore difficult. In order to better diagnose this tumor we analysed its CT findings and pathologic correlation. Seventeen tumors in 16 patients(M:F=3D9:7) diagnosed as ganglioneuroma between 1992 and 1996 were retrospectively analysed with regard to location, size, contour, long axis of the mass, enhancement pattern, calcification, necrosis and capsulation, all as seen on CT, and compared with histo-pathologic findings. Tumors were 1.5 to 10(mean, 5.6) cm in size, and their location was mediastinal(n=3D12), cervical(n=3D2), retroperitoneal (n=3D2) or adrenal(n=3D1). Fifteen had an oval or round contour and two were dumb-bell-shaped. The long axis of the lesion was craniocaudal in 14 cases and non-specific in three. Thirteen lesions showed heterogeneous enhancement, and four homogeneous. Capsule-like enhancement was noted on CT scans in eight cases;there was no definite correlation between enhancement pattern and pathologic findings. Calcification was seen in six cases and an inner low-density lesion in two. Ganglioneuroma is a benign neurogenic tumor, occurring most frequently at the posterior mediastinum. General CT findings of this tumor are a well-defined oval shape with a variable enhancement pattern, but several cases showed focal calcification or inner low density. For accurate diagnosis of ganglioneuroma both common and uncommon findings must therefore be considered.=20.

  13. Cine CT for Attenuation Correction in Cardiac PET/CT

    Science.gov (United States)

    Alessio, Adam M.; Kohlmyer, Steve; Branch, Kelley; Chen, Grace; Caldwell, James; Kinahan, Paul

    2008-01-01

    In dual-modality PET/CT systems, the CT scan provides the attenuation map for PET attenuation correction. The current clinical practice of obtaining a single helical CT scan provides only a snapshot of the respiratory cycle, whereas PET occurs over multiple respiratory cycles. Misalignment of the attenuation map and emission image because of respiratory motion causes errors in the attenuation correction factors and artifacts in the attenuation-corrected PET image. To rectify this problem, we evaluated the use of cine CT, which acquires multiple low-dose CT images during a respiratory cycle. We evaluated the average and the intensity-maximum image of cine CT for cardiac PET attenuation correction. Methods Cine CT data and cardiac PET data were acquired from a cardiac phantom and from multiple patient studies. The conventional helical CT, cine CT, and PET data of an axially translating phantom were evaluated with and without respiratory motion. For the patient studies, we acquired 2 cine CT studies for each PET acquisition in a rest–stress 13N-ammonia protocol. Three readers visually evaluated the alignment of 74 attenuation image sets versus the corresponding emission image and determined whether the alignment provided acceptable or unacceptable attenuation-corrected PET images. Results In the phantom study, the attenuation correction from helical CT caused a major artifactual defect in the lateral wall on the PET image. The attenuation correction from the average and from the intensity-maximum cine CT images reduced the defect by 20% and 60%, respectively. In the patient studies, 77% of the cases using the average of the cine CT images had acceptable alignment and 88% of the cases using the intensity maximum of the cine CT images had acceptable alignment. Conclusion Cine CT offers an alternative to helical CT for compensating for respiratory motion in the attenuation correction of cardiac PET studies. Phantom studies suggest that the average and the intensity

  14. CT identification of coeliac ganglia

    Energy Technology Data Exchange (ETDEWEB)

    Dal Pozzo, G.; Bozza, A.; Fargnoli, R.; Brizzi, E.

    1985-02-01

    The authors achieved the ''in vivo'' identification of the coeliac ganglia (C.G), using computerised tomography (CT). This result was confirmed by autopsies and by CT scans of an anatomical specimen in which the coeliac ganglia had been previously marked. CT allows and exact location of the coeliac ganglia and can be very useful for a precise alcoholic neurolysis of the coeliac plexus.

  15. CT in acute mesenteric ischaemia

    Energy Technology Data Exchange (ETDEWEB)

    Lee, R.; Tung, H.K.S.; Tung, P.H.M.; Cheung, S.C.W.; Chan, F.L

    2003-04-01

    Enhanced computed tomography (CT) is frequently performed for possible bowel ischaemia. It has the distinct advantage of possible detection of the causes of ischaemia. Radiologists therefore need to be familiar with the spectrum of diagnostic CT signs. We present the CT imaging findings in surgically proven cases of small bowel ischaemia. In addition to signs pertaining to the underlying aetiological pathology, bowel dilatation, bowel wall thickening, mural gas, occlusion of mesenteric vessels, ascites and infarct of other abdominal organs were observed.

  16. CT of neonatal herpes encephalitis.

    Science.gov (United States)

    Herman, T E; Cleveland, R H; Kushner, D C; Taveras, J M

    1985-01-01

    Seven neonates with proven herpes (HSV type 2) encephalitis exhibited a characteristic sequence of findings on cranial computed tomography (CT). The initial CT abnormalities in all infants were fingerlike areas of cortical increased attenuation noted on unenhanced scans obtained 2-30 days after presentation. These usually were accentuated by increased white-matter lucency. Subsequently (more than 30 days after presentation), extensive cerebral destruction, multicystic encephalomalacia, and calcification were seen on follow-up CT scans obtained in five infants.

  17. CT findings of atrial myxoma

    Energy Technology Data Exchange (ETDEWEB)

    Tsuchiya, F.; Kohno, A.; Saitoh, R.; Shigeta, A.

    1984-04-01

    The computed tomographic (CT) appearance of six atrial myxomas was analyzed. Five of the myxomas were located in the left atrium and one was in the right atrium. The margin of the myxoma was at least slightly lobulated in five cases and the content was inhomogeneous in all. Calcification was demonstrated in three cases. The site of attachment of the myxoma was demonstrated by CT to be the arial septum in all cases. The CT finding correlated well with the operative findings. It is concluded that it is possible with CT to diagnose atrial myxoma by the location and nature of the intracardiac mass and to differentiate it from thrombus.

  18. CT appearances of pleural tumours

    Energy Technology Data Exchange (ETDEWEB)

    Salahudeen, H.M. [Department of Radiology, Leeds Teaching Hospitals NHS Trust (United Kingdom)], E-mail: hmdsal@gmail.com; Hoey, E.T.D. [Department of Radiology, Leeds Teaching Hospitals NHS Trust (United Kingdom); Department of Radiology, Papworth Hospital, Cambridge (United Kingdom); Robertson, R.J.; Darby, M.J. [Department of Radiology, Leeds Teaching Hospitals NHS Trust (United Kingdom)

    2009-09-15

    Computed tomography (CT) is the imaging technique of choice for characterizing pleural masses with respect to their location, composition, and extent. CT also provides important information regarding invasion of the chest wall and surrounding structures. A spectrum of tumours can affect the pleura of which metastatic adenocarcinoma is the commonest cause of malignant pleural disease, while malignant mesothelioma is the most common primary pleural tumour. Certain CT features help differentiate benign from malignant processes. This pictorial review highlights the salient CT appearances of a range of tumours that may affect the pleura.

  19. Modern CT and PET/CT imaging of the liver; Moderne CT- und PET/CT-Bildgebung der Leber

    Energy Technology Data Exchange (ETDEWEB)

    Klasen, J.; Heusner, T.A.; Riegger, C.; Reichelt, D.; Kuhlemann, J.; Antoch, G.; Blondin, D. [Medizinische Fakultaet, Heinrich-Heine-Universitaet Duesseldorf, Institut fuer Diagnostische und Interventionelle Radiologie, Duesseldorf (Germany)

    2011-08-15

    Computed tomography (CT) is now widely available and represents an important and rapid method for the diagnostics of acute liver disease, characterization of focal liver lesions, planning of interventional therapy measures and postintervention control. In recent years CT has not become less important despite the increasing value of magnetic resonance imaging (MRI). By the use of different contrast medium phases good characterization of space-occupying lesions can be achieved. For the diagnostics of hepatocellular carcinoma (HCC) a triphasic examination protocol should always be implemented. The introduction of dual energy CT increased the sensitivity of imaging of hypervascularized and hypovascularized liver lesions and by the use of virtual native imaging it has become possible to avoid additional native imaging which reduces the x-ray exposition of patients. Positron emission tomography (PET) has an advantage for imaging in oncology because nearly the complete body of the patient can be screened and this is the main indication for PET/CT (whole-body staging). For purely hepatic problems 18F-fluorodeoxyglucose (FDG)-PET/CT using diagnostic CT data has a higher precision than CT alone but is inferior to MRI. (orig.) [German] Die Computertomographie (CT) ist heute breit verfuegbar und stellt eine wichtige und schnelle Methode zur Diagnostik akuter Lebererkrankungen, der Artdiagnostik fokaler Leberlaesionen und der Planung interventioneller Therapiemassnahmen sowie der postinterventionellen Kontrolle dar. In den letzten Jahren hat die CT trotz des zunehmenden Stellenwerts der Magnetresonanztomographie (MRT) nicht an Bedeutung verloren. Durch den Einsatz unterschiedlicher Kontrastmittelphasen kann meist eine gute Charakterisierung von Raumforderungen erfolgen. Bei der Diagnostik des hepatozellulaeren Karzinoms (HCC) sollte beispielsweise immer ein triphasisches Untersuchungsprotokoll angewendet werden. Mit Einfuehrung der Dual-energy-CT hat die Sensitivitaet in der

  20. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... passages) birth defects trauma to blood vessels or lung CT is well-suited for visualizing diseases or injury of ... of many areas of the body, particularly the lungs, abdomen, pelvis and bones. Sometimes ultrasound is substituted for CT as a method of imaging ...

  1. Relationship Groups in SNOMED CT

    NARCIS (Netherlands)

    Cornet, Ronald; Schulz, Stefan

    2009-01-01

    Relationship groups are a construct which is particular for the representation of concepts in SNOMED CT. In this paper, the July 2008 version of SNOMED CT is analyzed to determine the usage of relationship groups. Relationship groups are used with 36 out of 65 relations, playing a role in 28% of all

  2. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... in children, even newborn infants. Except for the chest x-ray, CT is the most commonly used imaging procedure ... Content Some imaging tests and treatments have special pediatric considerations. The teddy bear denotes ... Dose in X-Ray and CT Exams Contrast Materials Anesthesia Safety Children ...

  3. Innovations in PET/CT

    DEFF Research Database (Denmark)

    Levin Klausen, T; Høgild Keller, S; Vinter Olesen, O

    2012-01-01

    There has been a longstanding interest in positron emission tomography (PET) in combination with computed tomography (CT). Mostly because of the lack of structural information in PET which makes it difficult to assess the precise location of tissue with metabolic uptake, whereas CT can provide im...

  4. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available Toggle navigation Test/Treatment Patient Type Screening/Wellness Disease/Condition Safety En Español More Info Images/Videos About Us News Physician Resources Professions Site Index A-Z Children's (Pediatric) CT (Computed Tomography) Pediatric computed tomography (CT) ...

  5. CT features of ovarian tumors

    Energy Technology Data Exchange (ETDEWEB)

    Akiba, Ryuzo; Izumi, Sigeru; Tsutsui, Fumio; Kurihara, Soju; Hisa, Naofumi

    1985-02-01

    CT findings were compared with macroscopic and histopathologic findings in 84 patients with ovarian tumors. Marginal irregularity of the tumor shown on CT exhibited marked adhesion to the greater omentum, enteron or pelvic wall at laparotomy. CT showed tumor capsules more than 10 mm in thickness in 5 of 27 patients with malignant ovarian carcinomas (18.5%) and 2 of 15 patients with endometrioid cystadenoma (13.3%). Various thickness of the capsule was seen on CT in 48.1% of the patients with malignant ovarian carcinomas and 60.0% of the patients with endometrioid cystadenoma. Diagnostic accuracy of CT for the presence of absence of solid tumors was 89.3%. Misdiagnosis was attributed to the presence of high specific gravidity of fluid contents within the tumor, partial volume phenomenon, various thickness of the capsule, coagulation, and hair mass seen in dermoid cyst. Solid tumor-like density was larger and more irregular in the group with malignant ovarian tumors than in the group with benign ones. Irregular cystic parts were seen on CT in a high incidence among the group with malignant ovarian carcinomas. Dermoid cyst was diagnosed easily by CT because CT numbers were specific to the contents of cyst. (Namekawa, K.).

  6. CT findings of pancreas cystadenoma

    Energy Technology Data Exchange (ETDEWEB)

    Nishioka, Yasuji; Mori, Masaki; Chiya, Shuzo; Ito, Shyoko; Azuma, Kazuyoshi (Hiroshima Univ. (Japan). School of Medicine)

    1983-11-01

    A case of mucous cystadenoma of the pancreas was reported, which was diagnosed preoperatively by CT and echo-guided puncture of the cyst, and confirmed by surgery. CT was excellent in visualizing the presence or absence of a capsule, shape of calcification and characteristics of the internal structure.

  7. Your Radiologist Explains CT Colonography

    Medline Plus

    Full Text Available ... of Radiology (IDoR) Radiology and You Sponsored by Image/Video Gallery Your Radiologist Explains CT Colonography (Virtual ... to allow for inflation with air while CT images are being taken. If you’re scheduled for ...

  8. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... hearing aids, non-permanent retainers and hairpins may affect the CT images and may have to be ... only if it is essential for making a diagnosis and should not have repeated CT studies unless absolutely necessary. top of page What are ...

  9. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... materials and a metallic taste in his/her mouth that lasts for a few minutes. Occasionally, a ... as the lungs, bones, and blood vessels. CT examinations are fast and ... range of clinical problems. CT is less sensitive to patient movement ...

  10. The stylohyoid chain: CT imaging

    Energy Technology Data Exchange (ETDEWEB)

    Uysal Ramadan, Selma, E-mail: uysalselma@yahoo.co [Department of Radiology, Ankara Training and Research Hospital, Ankara 06590 (Turkey); Goekharman, Dilek, E-mail: gokharman@ttnet.net.t [Department of Radiology, Ankara Training and Research Hospital, Ankara 06590 (Turkey); Kosar, Pinar, E-mail: pkosar@hotmail.co [Department of Radiology, Ankara Training and Research Hospital, Ankara 06590 (Turkey); Kacar, Mahmut, E-mail: mkacar1961@gamil.co [Department of Radiology, Ankara Training and Research Hospital, Ankara 06590 (Turkey); Kosar, Ugur, E-mail: ugurkosar@hotmail.co [Department of Radiology, Ankara Training and Research Hospital, Ankara 06590 (Turkey)

    2010-09-15

    We aimed in this report to discuss the embryology, anatomy, theories of ossification and symptoms, clinical presentation, and diagnosis of the stylohyoid chain (SHC) variations, together with the role of radiographs, computed tomography (CT) and three-dimensional (3D)-CT in showing these variations. Because CT/3D-CT additionally facilitates visualization of the entire SHC with different axes, it is the most valuable method for establishing the relationship between the SHC and the surrounding tissue. SHC variation can be discovered during CT performed for indications other than ossified SHC. It is important to diagnose whether or not the SHC is ossified, since one of the treatment procedures in ossified SHC is total excision. If the clinician and radiologist are aware of these variations observed in the SHC, patients with vague symptoms may be spared unnecessary investigations and may be properly diagnosed earlier.

  11. CT findings in neonatal hypothermia

    Energy Technology Data Exchange (ETDEWEB)

    Schulman, H.; Laufer, L.; Berginer, J.; Hertzanu, Y. [Department of Radiology, Soroka Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, P. O. Box 151, Beer-Sheva 84101 (Israel); Hershkowitz, E.; Berenstein, T.; Sofer, S. [Pediatric Intensive Care Unit, Soroka Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva (Israel); Maor, E. [Department of Pathology, Soroka Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva (Israel)

    1998-06-01

    Background. Newborn infants are particularly prone to hypothermia, a condition with a high mortality. Objective. To study the CT brain patterns in infants with hypothermia and neurological symptoms. Materials and methods. We reviewed the brain CT of nine infants with neonatal hypothermia, multiple organ failure, seizures and coma. Results. Two infants had normal CT scans, acutely and at follow-up, and were clinically normal at follow-up. In seven infants, CT showed diffuse cerebral oedema, with reversal of the normal density relationship between grey and white matter and a relative increased density of the thalami, brainstem and cerebellum - the `reversal sign`. In six surviving infants with severe developmental delay, follow-up CT revealed cerebral atrophy with multicystic encephalomalacia. Conclusions. The `reversal sign` has been described in the abused child, birth asphyxia and anoxia due to drowning. Neonatal hypothermia is offered as a further cause. (orig.) With 6 figs., 1 tab., 13 refs.

  12. CT findings in neonatal hypothermia.

    Science.gov (United States)

    Schulman, H; Laufer, L; Berginer, J; Hershkowitz, E; Berenstein, T; Sofer, S; Maor, E; Hertzanu, Y

    1998-06-01

    Newborn infants are particularly prone to hypothermia, a condition with a high mortality. To study the CT brain patterns in infants with hypothermia and neurological symptoms. We reviewed the brain CT of nine infants with neonatal hypothermia, multiple organ failure, seizures and coma. Two infants had normal CT scans, acutely and at follow-up, and were clinically normal at follow-up. In seven infants, CT showed diffuse cerebral oedema, with reversal of the normal density relationship between grey and white matter and a relative increased density of the thalami, brainstem and cerebellum - the 'reversal sign'. In six surviving infants with severe developmental delay, follow-up CT revealed cerebral atrophy with multicystic encephalomalacia. The 'reversal sign' has been described in the abused child, birth asphyxia and anoxia due to drowning. Neonatal hypothermia is offered as a further cause.

  13. Thoracic textilomas: CT findings

    Energy Technology Data Exchange (ETDEWEB)

    Machado, Dianne Melo; Zanetti, Glaucia; Araujo Neto, Cesar Augusto; Nobre, Luiz Felipe; Meirelles, Gustavo de Souza Portes; Silva, Jorge Luiz Pereira e; Guimaraes, Marcos Duarte; Escuissato, Dante Luiz; Souza Junior, Arthur Soares; Hochhegger, Bruno; Marchiori, Edson, E-mail: edmarchiori@gmail.com [Hospital Universitario Antonio Pedro (HUAP/UFF), Niteroi, RJ (Brazil)

    2014-09-15

    Objective: the aim of this study was to analyze chest CT scans of patients with thoracic textiloma. Methods: this was a retrospective study of 16 patients (11 men and 5 women) with surgically confirmed thoracic textiloma. The chest CT scans of those patients were evaluated by two independent observers, and discordant results were resolved by consensus. Results: the majority (62.5%) of the textilomas were caused by previous heart surgery. The most common symptoms were chest pain (in 68.75%) and cough (in 56.25%). In all cases, the main tomographic finding was a mass with regular contours and borders that were well-defined or partially defined. Half of the textilomas occurred in the right hemithorax and half occurred in the left. The majority (56.25%) were located in the lower third of the lung. The diameter of the mass was ≤ 10 cm in 10 cases (62.5%) and > 10 cm in the remaining 6 cases (37.5%). Most (81.25%) of the textilomas were heterogeneous in density, with signs of calcification, gas, radiopaque marker, or sponge-like material. Peripheral expansion of the mass was observed in 12 (92.3%) of the 13 patients in whom a contrast agent was used. Intraoperatively, pleural involvement was observed in 14 cases (87.5%) and pericardial involvement was observed in 2 (12.5%). Conclusions: it is important to recognize the main tomographic aspects of thoracic textilomas in order to include this possibility in the differential diagnosis of chest pain and cough in patients with a history of heart or thoracic surgery, thus promoting the early identification and treatment of this postoperative complication. (author)

  14. Hybrid spectral CT reconstruction

    Science.gov (United States)

    Clark, Darin P.

    2017-01-01

    Current photon counting x-ray detector (PCD) technology faces limitations associated with spectral fidelity and photon starvation. One strategy for addressing these limitations is to supplement PCD data with high-resolution, low-noise data acquired with an energy-integrating detector (EID). In this work, we propose an iterative, hybrid reconstruction technique which combines the spectral properties of PCD data with the resolution and signal-to-noise characteristics of EID data. Our hybrid reconstruction technique is based on an algebraic model of data fidelity which substitutes the EID data into the data fidelity term associated with the PCD reconstruction, resulting in a joint reconstruction problem. Within the split Bregman framework, these data fidelity constraints are minimized subject to additional constraints on spectral rank and on joint intensity-gradient sparsity measured between the reconstructions of the EID and PCD data. Following a derivation of the proposed technique, we apply it to the reconstruction of a digital phantom which contains realistic concentrations of iodine, barium, and calcium encountered in small-animal micro-CT. The results of this experiment suggest reliable separation and detection of iodine at concentrations ≥ 5 mg/ml and barium at concentrations ≥ 10 mg/ml in 2-mm features for EID and PCD data reconstructed with inherent spatial resolutions of 176 μm and 254 μm, respectively (point spread function, FWHM). Furthermore, hybrid reconstruction is demonstrated to enhance spatial resolution within material decomposition results and to improve low-contrast detectability by as much as 2.6 times relative to reconstruction with PCD data only. The parameters of the simulation experiment are based on an in vivo micro-CT experiment conducted in a mouse model of soft-tissue sarcoma. Material decomposition results produced from this in vivo data demonstrate the feasibility of distinguishing two K-edge contrast agents with a spectral

  15. Hybrid spectral CT reconstruction.

    Directory of Open Access Journals (Sweden)

    Darin P Clark

    Full Text Available Current photon counting x-ray detector (PCD technology faces limitations associated with spectral fidelity and photon starvation. One strategy for addressing these limitations is to supplement PCD data with high-resolution, low-noise data acquired with an energy-integrating detector (EID. In this work, we propose an iterative, hybrid reconstruction technique which combines the spectral properties of PCD data with the resolution and signal-to-noise characteristics of EID data. Our hybrid reconstruction technique is based on an algebraic model of data fidelity which substitutes the EID data into the data fidelity term associated with the PCD reconstruction, resulting in a joint reconstruction problem. Within the split Bregman framework, these data fidelity constraints are minimized subject to additional constraints on spectral rank and on joint intensity-gradient sparsity measured between the reconstructions of the EID and PCD data. Following a derivation of the proposed technique, we apply it to the reconstruction of a digital phantom which contains realistic concentrations of iodine, barium, and calcium encountered in small-animal micro-CT. The results of this experiment suggest reliable separation and detection of iodine at concentrations ≥ 5 mg/ml and barium at concentrations ≥ 10 mg/ml in 2-mm features for EID and PCD data reconstructed with inherent spatial resolutions of 176 μm and 254 μm, respectively (point spread function, FWHM. Furthermore, hybrid reconstruction is demonstrated to enhance spatial resolution within material decomposition results and to improve low-contrast detectability by as much as 2.6 times relative to reconstruction with PCD data only. The parameters of the simulation experiment are based on an in vivo micro-CT experiment conducted in a mouse model of soft-tissue sarcoma. Material decomposition results produced from this in vivo data demonstrate the feasibility of distinguishing two K-edge contrast agents with

  16. Hybrid spectral CT reconstruction.

    Science.gov (United States)

    Clark, Darin P; Badea, Cristian T

    2017-01-01

    Current photon counting x-ray detector (PCD) technology faces limitations associated with spectral fidelity and photon starvation. One strategy for addressing these limitations is to supplement PCD data with high-resolution, low-noise data acquired with an energy-integrating detector (EID). In this work, we propose an iterative, hybrid reconstruction technique which combines the spectral properties of PCD data with the resolution and signal-to-noise characteristics of EID data. Our hybrid reconstruction technique is based on an algebraic model of data fidelity which substitutes the EID data into the data fidelity term associated with the PCD reconstruction, resulting in a joint reconstruction problem. Within the split Bregman framework, these data fidelity constraints are minimized subject to additional constraints on spectral rank and on joint intensity-gradient sparsity measured between the reconstructions of the EID and PCD data. Following a derivation of the proposed technique, we apply it to the reconstruction of a digital phantom which contains realistic concentrations of iodine, barium, and calcium encountered in small-animal micro-CT. The results of this experiment suggest reliable separation and detection of iodine at concentrations ≥ 5 mg/ml and barium at concentrations ≥ 10 mg/ml in 2-mm features for EID and PCD data reconstructed with inherent spatial resolutions of 176 μm and 254 μm, respectively (point spread function, FWHM). Furthermore, hybrid reconstruction is demonstrated to enhance spatial resolution within material decomposition results and to improve low-contrast detectability by as much as 2.6 times relative to reconstruction with PCD data only. The parameters of the simulation experiment are based on an in vivo micro-CT experiment conducted in a mouse model of soft-tissue sarcoma. Material decomposition results produced from this in vivo data demonstrate the feasibility of distinguishing two K-edge contrast agents with a spectral

  17. CT findings of colonic diverticulitis

    Energy Technology Data Exchange (ETDEWEB)

    Sasaki, Shigeru; Ohba, Satoru [Nagoya City Univ. (Japan). Medical School; Mizutani, Masaru [and others

    1998-11-01

    Although colonic diverticulitis has no indication for operation, but in some mistaken cases were operated with a diagnosis of acute appendicitis. We evaluated the CT findings of colonic diverticulitis about 19 cases and of asymptomatic colonic diverticula about 15 cases retrospectively. Diagnosis was confirmed of barium enema and operation. CT are complementary methods of examination that can delineated the range of thickening of the colon and the extension of inflammatory changes around the colon. We also believe that CT findings of colonic diverticulitis are useful for differentiating from a diagnosis of appendicitis. (author)

  18. Optimization of Protocol CT, PET-CT, whole body; Optimizacion de protocolo CT, en PET-CT, de cuerpo entero

    Energy Technology Data Exchange (ETDEWEB)

    Gutierrez, Fredys Santos, E-mail: fsantos@ccss.sa.cr [Caja Costarricense de Seguro Social (ACCPR/CCSS), San Jose (Costa Rica). Area Control de Calidade Y Proteccion Radiologica; Namias, Mauro, E-mail: mnamias@gmail.com [Comision Nacional de Energia Atomica (FCDN/CNEA), Buenos Aires (Argentina). Fundacion Centro Diagnostico Nuclear

    2013-11-01

    The objective of this study was to optimize the acquisition protocols and processing existing of the CT PET/CT scanner for clinical use of Nuclear Diagnostic Center Foundation, a way to minimize the radiation dose while maintaining diagnostic image quality properly. Dosimetric data of PET / CT service were surveyed and obtained the baseline against which we compare and define strategies and modifications to develop online. We selected transaxial up to the pulmonary hilum and liver slices as the anatomical regions of interest that led to the standardization of the study.

  19. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... important organs in the abdomen including the liver, kidney and spleen. CT is sometimes used to: diagnose ... is a history of heart disease, asthma, diabetes, kidney disease or thyroid problems. Any of these conditions ...

  20. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... In children, CT is typically used to diagnose causes of abdominal pain, evaluate for injury after trauma, ... lie still is reduced. Though the scanning itself causes no pain, your child may experience some discomfort ...

  1. Your Radiologist Explains CT Colonography

    Medline Plus

    Full Text Available ... Imaging Costs Video: Abdominal Ultrasound Video: Pelvic Ultrasound Radiology and You Sponsored by Image/Video Gallery Your ... Explains CT Colonography (Virtual colonoscopy) Transcript Welcome to Radiology Info dot org! Hi, I’m Dr. Elliot ...

  2. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... your child. top of page Additional Information and Resources The Alliance for Radiation Safety in Pediatric Imaging's " ... A child being prepared for a CT scan. View full size with caption Pediatric Content Some imaging ...

  3. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... particularly the lungs, abdomen, pelvis and bones. Sometimes ultrasound is substituted for CT as a method of ... to consider other tests, such as MRI or ultrasound which might give the same information. Other measures ...

  4. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... will hear only slight buzzing, clicking and whirring sounds as the CT scanner revolves around him/her ... ultrasound which might give the same information. Other measures are to restrict the area scanned as much ...

  5. Adrenoleukodystrophy: CT and MRI findings

    Energy Technology Data Exchange (ETDEWEB)

    Patel, P.J. [Dept. of Radiology, King Saud Univ., King Khalid Univ. Hospital, Riyadh (Saudi Arabia); Kolawole, T.M. [Dept. of Radiology, King Saud Univ., King Khalid Univ. Hospital, Riyadh (Saudi Arabia); Malabarey, T.M. [Dept. of Radiology, King Saud Univ., King Khalid Univ. Hospital, Riyadh (Saudi Arabia); Al-Herbish, A.S. [Dept. of Paediatrics, King Saud Univ., King Khalid Univ. Hospital, Riyadh (Saudi Arabia); Al-Jurrayan, N.A.M. [Dept. of Paediatrics, King Saud Univ., King Khalid Univ. Hospital, Riyadh (Saudi Arabia); Saleh, M. [Dept. of Paediatrics, King Saud Univ., King Khalid Univ. Hospital, Riyadh (Saudi Arabia)

    1995-06-01

    A case of adrenoleukodystrophy (ALD) with CT and MRI findings is described. The CT scan showed low densities in the white matter of the parietal and occipital lobes. No calcifications were seen. Post-contrast CT showed an abnormal enhancement within the involved white matter. MRI showed changes of demyelination around the atria of the lateral ventricles bilaterally involving the posterior aspect of the cerebrum symmetrically. The posterior part of the posterior corpus callosum, splenium and pyramidal tracts also showed increased signal intensity. From a review of the literature, these findings are typical of the radiological changes seen in ALD. ALD can be diagnosed from typical history and biochemical changes as well as from CT and MRI findings. (orig.)

  6. Your Radiologist Explains CT Colonography

    Medline Plus

    Full Text Available ... Image/Video Gallery Your Radiologist Explains CT Colonography (Virtual colonoscopy) Transcript Welcome to Radiology Info dot org! ... colonography or, as it is more commonly known, virtual colonoscopy. Virtual colonoscopy is a diagnostic imaging test ...

  7. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... scanning is painless, noninvasive and accurate. A major advantage of CT is its ability to image bone, ... FAQ | Privacy | Terms of Use | Links | Site Map Copyright © 2018 Radiological Society of North America, Inc. (RSNA). ...

  8. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... lives. CT has been shown to be a cost-effective imaging tool for a wide range of ... accredited facilities database . This website does not provide cost information. The costs for specific medical imaging tests, ...

  9. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... children. top of page What are some common uses of the procedure? CT is used to help ... be with your child. Some imaging facilities may use general anesthesia or conscious sedation in young children ...

  10. Your Radiologist Explains CT Colonography

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    Full Text Available ... for cancer and growths called polyps. This procedure uses low-dose CT or CAT scanning to produce ... exam to your health. While virtual colonoscopy does use radiation, the benefit of an accurate diagnosis far ...

  11. Your Radiologist Explains CT Colonography

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    Full Text Available ... a virtual colonoscopy, there are several things you can do to prepare for the examination. On the ... wear a gown. After the CT scan you can return to your normal diet and go back ...

  12. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... be viewed on a computer monitor, printed on film or transferred to a CD or DVD. CT ... through the body, recording an image on photographic film or a special image recording plate . Bones appear ...

  13. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... in CT scans should have no immediate side effects. Risks The risk of serious allergic reaction to ... Pediatric Content Some imaging tests and treatments have special pediatric considerations. The teddy bear denotes child-specific ...

  14. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... scanner. top of page How does the procedure work? In many ways, CT scanning is like other ... contrast material is given by enema. In this case, encourage your child to be patient, as the ...

  15. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... such as inflammation of the bronchi (breathing passages) birth defects trauma to blood vessels or lung CT is well-suited for visualizing diseases or injury of important organs in the abdomen including the ...

  16. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... the CT examination table, usually lying flat on his/her back, but sometimes in other positions. Straps ... the contrast materials and a metallic taste in his/her mouth that lasts for a few minutes. ...

  17. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... the scan although they may need coaching and practice. Younger children may not be able to hold ... effective imaging tool for a wide range of clinical problems. CT is less sensitive to patient movement ...

  18. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... to be removed prior to your child's exam. This can be discussed with the CT technologist, the ... ill will not be sedated or anesthetized. If this is the case, or if you suspect that ...

  19. Your Radiologist Explains CT Colonography

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    Full Text Available ... or colon for cancer and growths called polyps. This procedure uses low-dose CT or CAT scanning ... important to consider the likelihood of benefit from this exam to your health. While virtual colonoscopy does ...

  20. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... injuries and bleeding quickly enough to help save lives. CT has been shown to be a cost- ... the reason for the exam, the body area being examined, and the child's size. Radiologists generally attempt ...

  1. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... order to produce clear images. Also, shorter scan times will make it easier for children to hold their breath during critical parts of the exam. CT scanning is painless, noninvasive ...

  2. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... scanner is typically a large machine with a hole, or short tunnel, in the center. A moveable ... up in shades of gray and air appears black. With CT scanning, numerous x-ray beams and ...

  3. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... scans may be performed on newborns, infants and older children. top of page What are some common ... beneficial for all patients but especially children, the elderly and critically ill. For some CT exams, a ...

  4. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... slices. When the image slices are reassembled by computer software, the result is a very detailed multidimensional view of the body's interior. Refinements in detector technology allow new CT scanners to obtain multiple slices ...

  5. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... heart disease, asthma, diabetes, kidney disease or thyroid problems. Any of these conditions may influence the decision ... imaging tool for a wide range of clinical problems. CT is less sensitive to patient movement than ...

  6. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... rarely, administered by enema. Next, the table will move quickly through the scanner to determine the correct ... position for the scans. Then, the table will move slowly through the machine as the actual CT ...

  7. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... radiologist to read. top of page What will my child experience during and after the procedure? CT ... feedback Did you find the information you were looking for? Yes No Please type your comment or ...

  8. Your Radiologist Explains CT Colonography

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    Full Text Available ... be performed with the most accuracy. If you have any questions about the prep, speak to your ... same day in most cases. Perhaps you might have some concerns about CT scanning. However, it’s important ...

  9. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... as pneumonia a tumor that arises in the lung or has spread there from a distant site ... passages) birth defects trauma to blood vessels or lung CT is well-suited for visualizing diseases or ...

  10. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow new CT scanners to obtain multiple slices ... the need for sedation and general anesthesia. New technologies that will make even faster scanning possible are ...

  11. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... CT of the chest is used to evaluate: complications from infections such as pneumonia a tumor that ... radiation dose. There always is a risk of complications from general anesthesia or sedation. Every measure will ...

  12. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... to looking into a loaf of bread by cutting the loaf into thin slices. When the image ... been shown to be a cost-effective imaging tool for a wide range of clinical problems. CT ...

  13. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... radiation children may receive from a CT scan. One of the best ways of limiting radiation exposure ... or pediatrician and the radiologist will decide which type of examination is best for your child. top ...

  14. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... x-ray exam, a small burst of radiation passes through the body, recording an image on photographic ... of CT scan, the machine may make several passes. Patients may be asked to hold their breath ...

  15. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... or thyroid problems. Any of these conditions may influence the decision on whether contrast material will be ... bear denotes child-specific content. Related Articles and Media Radiation Dose in X-Ray and CT Exams ...

  16. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... internal organs, bones, soft tissues and blood vessels. It may be used to help diagnose abdominal pain ... evaluate blood vessels throughout the body. With CT, it is possible to obtain very detailed pictures of ...

  17. Your Radiologist Explains CT Colonography

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    Full Text Available ... you today about computed tomography colonography or, as it is more commonly known, virtual colonoscopy. Virtual colonoscopy ... might have some concerns about CT scanning. However, it’s important to consider the likelihood of benefit from ...

  18. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... images and send an official report to your primary care physician or physician who referred you for the ... those obtained by CT scanning. Working together, your primary care physician or pediatrician and the radiologist will decide ...

  19. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... as a CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces ... lowest radiation dose that will provide the needed diagnostic information. The benefit of an accurate diagnosis far ...

  20. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... CT scans that are not clearly needed. Another strategy is to consider other tests, such as MRI ... or pediatrician and the radiologist will decide which type of examination is best for your child. top ...

  1. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... a gown. You may be instructed to withhold food or drink beforehand, especially if sedation or anesthesia ... cancer, and diagnose and monitor infectious or inflammatory disorders. CT may also be performed to evaluate blood ...

  2. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... disease of the pelvic bones top of page How should we prepare for the CT scan? Your child should wear comfortable, loose-fitting clothing to the exam. He or she may be given ...

  3. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... bear denotes child-specific content. Related Articles and Media Radiation Dose in X-Ray and CT Exams Contrast Materials Anesthesia Safety Children and Radiation Safety Images ...

  4. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... tomography, more commonly known as a CT or CAT scan, is a diagnostic medical test that, like ... imaging provides real-time imaging, making it a good tool for guiding minimally invasive procedures such as ...

  5. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... Pediatric computed tomography (CT) is a fast, painless exam that uses special x-ray equipment to create ... your doctor and the technologist prior to the exam if your child has a known allergy to ...

  6. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... like traditional x-rays, produces multiple images or pictures of the inside of the body. The cross- ... CT, it is possible to obtain very detailed pictures of the heart and blood vessels in children, ...

  7. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... have a personal story about radiology? Share your patient story here Images × Image Gallery A child being prepared for a CT scan. View full size with caption Pediatric Content Some imaging tests and treatments have special ...

  8. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... problems. Any of these conditions may influence the decision on whether contrast material will be given to ... unlike MRI. CT imaging provides real-time imaging, making it a good tool for guiding minimally invasive ...

  9. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... images and send an official report to your primary care physician or physician who referred you for ... those obtained by CT scanning. Working together, your primary care physician or pediatrician and the radiologist will ...

  10. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... a CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple ... your doctor of any recent illnesses or other medical conditions your child may have, and if there ...

  11. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... scanner. top of page How does the procedure work? In many ways, CT scanning is like other ... accurate diagnosis far outweighs the risk. See the Safety page for more information about radiation dose. There ...

  12. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... appears black. With CT scanning, numerous x-ray beams and a set of electronic x-ray detectors ... through the scanner, so that the x-ray beam follows a spiral path. A special computer program ...

  13. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... to help diagnose abdominal pain or evaluate for injury after trauma. Tell your doctor about your child’s ... diagnose a wide range of conditions due to injury or illness. In children, CT is typically used ...

  14. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... ray detectors rotate around the patient. At the same time, the examination table is moving through the ... soft tissue and blood vessels all at the same time. Unlike conventional x-rays, CT scanning provides ...

  15. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... can be performed if you have an implanted medical device of any kind, unlike MRI. CT imaging provides ... accurate diagnosis far outweighs the risk. See the Safety page for more information about radiation dose. There ...

  16. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... it will be swallowed, injected through an intravenous line (IV) or, rarely, administered by enema. Next, the ... used in CT scans should have no immediate side effects. Risks The risk of serious allergic reaction ...

  17. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... can help: detect cysts or tumors in the pelvis evaluate for stones in the urinary tract assess ... areas of the body, particularly the lungs, abdomen, pelvis and bones. Sometimes ultrasound is substituted for CT ...

  18. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... has spread there from a distant site airway disease such as inflammation of the bronchi (breathing passages) birth defects trauma to blood vessels or lung CT is well-suited for visualizing ...

  19. Your Radiologist Explains CT Colonography

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    Full Text Available ... and You Take our survey Sponsored by Image/Video Gallery Your Radiologist Explains CT Colonography (Virtual colonoscopy) ... Carotid Intima-Media Thickness Test Medical Imaging Costs Video: Abdominal Ultrasound Video: Pelvic Ultrasound Radiology and You ...

  20. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... the body's interior. Refinements in detector technology allow new CT scanners to obtain multiple slices in a ... reducing the need for sedation and general anesthesia. New technologies that will make even faster scanning possible ...

  1. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... evaluation with additional views or a special imaging technique. A follow-up examination may also be necessary ... Sometimes ultrasound is substituted for CT as a method of imaging in these procedures in children. A ...

  2. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... of imaging in these procedures in children. A diagnosis determined by CT scanning may eliminate the need ... needed diagnostic information. The benefit of an accurate diagnosis far outweighs the risk. See the Safety page ...

  3. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... story about radiology? Share your patient story here Images × Image Gallery A child being prepared for a CT ... possible charges you will incur. Web page review process: This Web page is reviewed regularly by a ...

  4. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... CT examination table, usually lying flat on his/her back, but sometimes in other positions. Straps and ... contrast materials and a metallic taste in his/her mouth that lasts for a few minutes. Occasionally, ...

  5. Your Radiologist Explains CT Colonography

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    Full Text Available ... the large intestine or colon for cancer and growths called polyps. This procedure uses low-dose CT ... likelihood of benefit from this exam to your health. While virtual colonoscopy does use radiation, the benefit ...

  6. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... Sometimes ultrasound is substituted for CT as a method of imaging in these procedures in children. A ... 450 pounds—for the moving table. Other imaging methods such as ultrasound or magnetic resonance (MR) imaging ...

  7. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... you suspect that your child may be getting sick, you should talk with your physician about rescheduling ... information and monitor are located in a separate room where the CT technologist sits. The technologist will ...

  8. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... tissues show up in shades of gray and air appears black. With CT scanning, numerous x-ray ... determines that the images are of high enough quality for the radiologist to read. top of page ...

  9. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... over time. Follow-up examinations are sometimes the best way to see if treatment is working or ... receive from a CT scan. One of the best ways of limiting radiation exposure is to avoid ...

  10. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... or thyroid problems. Any of these conditions may influence the decision on whether contrast material will be ... to wear a lead apron to prevent radiation exposure. The radiation dose directly outside of the CT ...

  11. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... like? The CT scanner is typically a large machine with a hole, or short tunnel, in the ... of this tunnel. In the center of the machine, the x-ray tube and electronic x-ray ...

  12. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... The teddy bear denotes child-specific content. Related Articles and Media Radiation Dose in X-Ray and CT ... note RadiologyInfo.org is not a medical facility. Please contact your physician with specific medical ...

  13. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... be necessary. Your doctor will explain the exact reason why another exam is requested. Sometimes a follow- ... fine tune" the CT settings based on the reason for the exam, the body area being examined, ...

  14. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... imaging provides real-time imaging, making it a good tool for guiding minimally invasive procedures such as ... areas of the body that sometimes are as good as or better than those obtained by CT ...

  15. Children's (Pediatric) CT (Computed Tomography)

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    Full Text Available ... to read. top of page What will my child experience during and after the procedure? CT exams ... and is further reviewed by committees from the American College of Radiology (ACR) and the Radiological Society ...

  16. CT manifestations of ileal dysgenesis

    Energy Technology Data Exchange (ETDEWEB)

    Oberhelman, Amy P.; Herman, Thomas E.; McAlister, William H. [St. Louis Children' s Hospital, Mallinckrodt Institute of Radiology, Washington University School of Medicine, Department of Radiology, St. Louis, MO (United States); Keating, James P. [St. Louis Children' s Hospital, Mallinckrodt Department of Pediatrics, Washington University School of Medicine, Division of Gastroenterology, St. Louis, MO (United States); Rollins, Michael D.; Dillon, Patrick A. [St. Louis Children' s Hospital, Department of Surgery, Washington University School of Medicine, St. Louis, MO (United States)

    2007-02-15

    Ileal dysgenesis is an uncommon condition of unknown etiology occurring in the distal ileum in the region of the vitelline duct. The CT appearance of this lesion, although not previously described to our knowledge, is characteristic. We report a patient with ileal dysgenesis who had an abdominal CT scan to evaluate chronic iron deficiency anemia and protein-losing enteropathy. Recognition of this lesion by pediatric radiologists is important; so that surgical treatment, which is simple and effective, can be initiated quickly. (orig.)

  17. CT findings following diphenylhydantoin intoxication

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    Baier, W.K.; Beck, U.; Hirsch, W.

    1985-05-01

    CT findings in three female epileptic patients are presented. The patients were treated with toxic doses of the anticonvulsant diphenylhydantoin, leading to irreversible ataxia of varying severity. CT shows cerebellar atrophy, including discernible sulci, a dilated 4th ventricle, basal cisterns, and subarachnoid space. These effects of severe DPH toxicity are in the differential diagnosis from the ''idiopathic'' and other toxic and systemic atrophies, as well as from the dysontogenetic lesions of the cerebellum.

  18. Multislice CT enteroclysis: technique and clinical applications

    Energy Technology Data Exchange (ETDEWEB)

    Rajesh, A. [Department of Radiology, Indiana University School of Medicine, Indianapolis, IN (United States)]. E-mail: arajesh27@hotmail.com; Maglinte, D.D.T. [Department of Radiology, Indiana University School of Medicine, Indianapolis, IN (United States)

    2006-01-15

    Computed tomography (CT) enteroclysis was introduced to overcome the individual deficiencies of barium enteroclysis and abdominal CT. The use of multislice CT technology has made the procedure a feasible extension of the intubation infusion method of small bowel examination. This review is an update of the technique and clinical application of CT enteroclysis with illustrations.

  19. CT features of appendiceal mucocele

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    Yu, Won Jong; Byun, Jae Young; Jung, Jung Im; Lee, Hae Gyu; Park, Young Ha; Shin, Kyung Sub [Catholic University Medical College, Seoul (Korea, Republic of)

    1995-10-15

    To evaluate the usefulness of CT features of appendiceal mucocele in the diagnosis and evaluation of complications. We retrospectively reviewed CT findings and compared with operative findings in 7 cases of pathologically proven appendiceal mucocele. CT findings such as location and extent of the lesion, tissue density, thickness or calcification of the wall, presence of adjacent inflammatory infiltration, and visualization of normal vermiform appendix were analyzed. Appendiceal mucocele was found as homogeneous low density cystic mass adjacent to the cecum, which has no surrounding inflammatory infiltration except in one case of perforation and one case of intussusception. Mean CT number measured in 4 cases was 21 Hounsfield unit. Thin curvilinear calcifications were noted along the cystic wall in 2 cases. Normal vermiform appendix couldn't be demonstrated in all cases. Appendiceal mucocele is characterized by homogeneously low density and thin walled cystic tumor adjacent to cecum without surrounding inflammatory infiltration, and absence of normal vermiform appendix on CT. Therefore, CT is valuable in preventing operative complications of appendiceal mucocele.

  20. CT of metastatic spinal tumor

    Energy Technology Data Exchange (ETDEWEB)

    Sakata, T. (Osaka Medical Coll., Takatsuki (Japan))

    1980-12-01

    CT findings of metastatic spinal tumor were classified into 6 types, i.e., consolidation, dissolution, mottle, doughnut, and ring types, and mixed type of these, and that of no findings. Some statistically significant relationship was found between prostatic cancer and consolidation type, and unknown primary cancer and dissolution type. Abnormal findings of bone scintigraphy was suspected to have metastatic spinal tumor by plain radiography and CT scan in 64/128 (50.0%) and 113/145 (78.6%), respectively. There was some relationship between plain radiographic findings and CT findings; between consolidation type of the former and consolidation type of the latter, dissolution type and dissolution type, compression fracture type and mixed type, the type of no findings and consolidation or mixed type. Most of the lesions detected by CT as consolidation or mixed type were revealed by plain radiography. Changes in Ca amount was not detected by plain radiography and CT scan if it was approximately less than 30% and 18% of the initial Ca respectively.