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  1. Prevalence of thyroid autoimmunity in patients with pemphigus vulgaris Prevalencia de autoinmunidad tiroidea en pacientes con pénfigo vulgar

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    Fabián Pitoia

    2005-08-01

    Full Text Available Among bullous diseases, pemphigus vulgaris (PV is a classical variety of this type of skin disorders. To establish the real prevalence of thyroid abnormalities in such a disease, a prospective study was developed. For this reason, thyroid evaluation was performed in 15 consecutive patients who attended the Dermatology Clinic for PV and in a group of 15 healthy volunteers (Control Group matched by age and gender. Thyroid function was evaluated by measuring T3, T4 and TSH. The presence or absence of goiter was searched by palpation, while thyroid autoimmunity was investigated through the assay of thyroperoxidase antibodies (TPO-Ab. In each group there were 9 women and 6 men, aging 25-65 years (mean = 48.3 y in the PV Group, and 25-69 years (mean = 45.4 y in the Control Group. It was found that 7 patients (46.6% of the PV Group and 1 subject (6.7% of the Control Group (p El pénfigo vulgar (PV es una enfermedad ampollar clásica de etiología autoinmune que se caracteriza por la presencia de lesiones intraepiteliales. Para establecer la prevalencia de anormalidades tiroideas en el PV, realizamos un estudio prospectivo en 15 pacientes consecutivos que consultaron a la División Dermatología debido a PV y en un grupo de 15 voluntarios sanos (Grupo Control. La función tiroidea se evaluó a través de la medición de T3, T4 y TSH y la presencia de bocio se determinó por medio de la palpación tiroidea. La autoinmunidad se investigó usando un ensayo IRMA para la medición de anticuerpos antitiroperoxidasa (ATPO. En cada grupo había 9 mujeres y 6 hombres que fueron apareados por edad y sexo, con edades comprendidas entre 25 y 65 años (promedio 48.2 años en el grupo PV, y entre 25 y 69 años (promedio 45.4 años en el grupo control. Se encontró que 7 pacientes (46.6% del grupo PV y uno (6.6% del grupo control presentaron alteraciones tiroideas, (p<0.015. La presencia de ATPO positivos se observó en 6 pacientes con PV y en un voluntario del grupo

  2. Tormenta tiroidea Thyroid storm

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    Lisette Leal Curí

    2012-12-01

    Full Text Available La tormenta tiroidea es una de las situaciones más críticas entre las emergencias endocrinas y tiene una significativa mortalidad. La etiología más común de tirotoxicosis es la enfermedad de Graves y el factor precipitante que predomina es la infección. Clínicamente se caracteriza por la disfunción de varios sistemas (termorregulador, nervioso central, gastrointestinal y cardiovascular, con niveles de hormonas tiroideas libres o totales por encima de los valores normales. El tratamiento debe tener un enfoque multidisciplinario, e incluye medidas de soporte en unidades de cuidados intensivos, normalización de la temperatura corporal, reducción de la producción y liberación de hormonas tiroideas, con antitiroideos de síntesis y yodo respectivamente, bloqueo de los efectos periféricos mediante la administración de beta-bloqueadores, y corrección del factor desencadenante. Una vez que el paciente se encuentra estable es necesario planificar una terapia definitiva que impida la recurrencia futura de la crisis tirotóxica.The thyroid storm is one of the most critical situations in the endocrine emergencies and exhibits a significant mortality rate. The most common etiology of thyrotoxicosis is Graves' disease and the predominant precipitating factor is infection. The clinical characteristics are dysfunction of several systems (heat-regulator, central nervous, gastrointestinal and cardiovascular, and levels of total or free thyroid hormones that exceed the normal values. The treatment must be multidisciplinary and include support measures in intensive care units, normalization of body temperature, reduction of the production and the release of thyroid hormones by using synthesis and iodine anti-thyroid products respectively, blockade of the peripheral effects through administration of Beta-blockers and correction of the unleashing factor. Once the patients are stabilized, it is necessary to plan the final therapy that will prevent the

  3. Amiodarona y disfunción tiroidea

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    Leonardo F. L. Rizzo

    2012-02-01

    Full Text Available La amiodarona es un análogo estructural de la hormona tiroidea, y algunas de sus propiedades antiarrítmicas como así también su toxicidad son atribuibles a su interacción con los receptores nucleares de las hormonas tiroideas. Por ser muy lipofílica, la amiodarona se concentra en muchos tejidos y se elimina, por consecuencia, muy lentamente. Se emplea preferentemente para el tratamiento de arritmias graves tales como fibrilación y taquicardia ventriculares. Otras indicaciones incluyen la fibrilación auricular y el aleteo, la insuficiencia cardíaca congestiva grave, la prevención de la fibrilación auricular recurrente y situaciones de emergencia médica como la prevención de muerte súbita cardiaca¹. Nuestro objetivo es proporcionar un enfoque actualizado sobre la amiodarona y su influencia sobre la fisiología tiroidea y discutir y analizar en profundidad sus potenciales efectos adversos como el hipotiroidismo y la tirotoxicosis.

  4. Estado actual y perspectiva de las pruebas relacionadas con el estudio de la función tiroidea Present state and prospects of tests related to the thyroid function study

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    Ernesto Alavez Martín

    2003-04-01

    Full Text Available Las enfermedades tiroideas pueden ser diagnosticadas, en la mayoría de los casos, por la clínica. Sin embargo, existen situaciones que requieren de las pruebas de función tiroidea con el fin de valorar correctamente al paciente en las etapas iniciales de la disfunción de esta glàndula, con el fin de establecer el tratamiento adecuado de forma individual y el seguimiento de la evolución de la enfermedad. En esta revisión hacemos referencia a las pruebas empleadas para valorar el estado de la función tiroidea y se señalan sus ventajas, limitaciones y tendencias actuales. La determinación de TSH por procederes de segunda y tercera generaciones permite establecer el diagnóstico del hipertiroidismo e hipotiroidismo primarios, aún en las formas subclínicas de ambos, al mostrar inhibición o hipersecreción, respectivamente, así como la dosis adecuada de l-levotiroxina y orientar a una causa hipofisaria de esta disfunción. La determinación de T4 es de gran valor para conocer la intensidad de la disfunción tiroidea y para valorar la eficacia del tratamiento en las primeras semanas de iniciado. La determinación de T3 tiene su principal indicación ante la sospecha de la presencia del llamado hipertiroidismo por T3. La determinación de T4 y T3 totales da lugar a una interpretación incorrecta en cuanto a las situaciones que modifican la globulina transportadora de tiroxina (TBG. La tendencia actual es al empleo de TSHs como prueba inicial para el diagnóstico de la disfunción tiroidea, la cual se debe indicar teniendo siempre en cuenta la clínica y, de ser necesario, asociarla a la determinación de T4 o T3 libres.The thyroid diseases may be diagnosed in most of cases by the clinics. However, there are circumstances that required thyroid function tests to correctly assess the patient in initial stages of thyroid dysfunction and give an adequate treatment on an individual basis and the follow-up of the disease. This review makes

  5. Frequency Of Pancreatic Beta-Cell Autoimmunity Markers In Patients With Autoimmune Thyroid Disease Frecuencia de marcadores de autoinmunidad beta pancreática en pacientes con enfermedad tiroidea autoinmune

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    María E. Primo

    2008-02-01

    Full Text Available A total of 305 ambulatory patients recruited at the Division of Endocrinology, Hospital de Clínicas, University of Buenos Aires, with autoimmune thyroid disease (AITD were studied to search for associations between autoimmune thyroid disease and presence of serum markers of autoimmune diabetes mellitus. Screening for markers of pancreatic beta-cell autoimmunity was performed by radioligand binding assays (RBA as follows: autoantibodies to glutamic acid decarboxylase (GADA and proinsulin (PAA were determined in all sera, whereas autoantibodies to protein tyrosine phosphatase (IA-2A and insulin (IAA were additionally measured in 200 sera randomly selected from the total collection. In addition, every GADA positive serum among the remaining 105 sera was systematically tested for the presence of IA-2A and IAA. In the cohort of 305 AITD patients 22 (7.2% were previously diagnosed as type 1, type 2 or insulin-requiring type 2 diabetics. Ten of these patients presented serum marker positivity specific for β-cell autoantigens and 12 were marker negative. On the other hand, considering the majority of non-diabetic AITD patients (n=283, β-cell marker positivity was detected in 17 individuals (6.0%. The prevalence of autoimmune diabetes markers was much higher in the studied population than in the general population utilized as a control group, and GADA was the most frequent marker.Se investigó la asociación entre enfermedad tiroidea autoinmune y la presencia de marcadores séricos de diabetes mellitus en 305 pacientes ambulatorios con enfermedad tiroidea autoinmune reclutados en la División Endocrinología. La búsqueda de marcadores de autoinmunidad contra las células beta pancreáticas se realizó por la técnica de unión de radioligandos (RBA como se detalla a continuación: se determinaron autoanticuerpos contra la decarboxilasa del ácido glutámico (GADA y proinsulina (PAA en todos los sueros, mientras que los anticuerpos contra la prote

  6. Mecanismo de acción de hormonas tiroideas sobre el páncreas endócrino

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    Cortizo, Ana María

    1987-01-01

    El rol de las hormonas tiroideas en la Diabetes Mellitus y la función endocrina del páncreas fue estudiado por primera vez en 1944 por B. A. Houssay (1 ). Trabajando con perros parcialmente panceatectomizados, sometidos a tratamiento con hormonas tiroideas, observó que adquirían una forma de diabetes irreversible, que persistía aún después de interrumpir el tratamiento tiroideo. Llamó a ésta Diabetes Meta.tiroidea ; su mecanismo parecía ser un agotamiento pancreático consecutivo a ...

  7. Biopsia por aspiración y supresión con hormonas tiroideas en el diagnóstico de cáncer tiroideo: comparación con la cirugía en 77 nódulos hipocaptantes Fine-Needle aspiration biopsy and suppression with thyroid hormone in the diagnosis of thyroid carcinoma

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    Humberto Aristizábal

    1992-01-01

    Full Text Available Se estudiaron 77 pacientes con nódulos tiroideos hipocaptantes, demostrados por gamagrafía, por medio de biopsia tiroidea por aspiración y terapia supresiva con hormonas tiroideas durante 6 meses o más. Se realizó estudio ecográfico del nódulo antes de iniciar la terapia y seis meses después de estarla administrando. Todos fueron intervenidos porque en ninguno desapareció el nódulo con la terapia, a pesar de que se obtuvo supresión de la tirotrofina en plasma. La biopsia tiroidea por aspiración (BT A fue Interpretada en todos los pacientes como bocio coloide o nodular o neoplasia folicular. En contraste, en el estudio de la pieza quirúrgica 52 pacientes presentaron bocio nodular, multinodular o coloide; 16 tenían carcinomas (12 papilares y 4 foliculares y 9 tiroiditis de Hashimoto. Contrariamente a lo esperado se observó que 5 de loS carcinomas (31.3% disminuyeron de volumen durante el tratamiento hormonal; de acuerdo a la ecografía la disminución promedio fue 0.41 cm3. En cambio 4 de los 52 nódulos benignos (7.7% aumentaron de volumen, en promedio 3.7 cm3. Estos hallazgos sugieren que la prueba de supresión con hormonas tiroideas no es confiable para definir si una lesión es benigna o maligna. En el estudio quirúrgico se demostró que 20.8% (16/77 de los nódulos eran carcinomas. A la luz de estos datos la biopsia por aspiración no estableció por lo general el diagnóstico de carcinoma; por ello se debe recurrir a la cirugía aunque la biopsia sea negativa.

    Seventy-seven patients with cold thyroid nodules were studied with flne-needle aspiration biopsy and suppression with thyroid hormone. The volume of the nodule was calculated ultrasonographycally at the beginning of the study and after six months of oral therapy with thyroglobulin, at doses sufficient to maintain TSH at the low limits of the normal

  8. Hipotiroidismo congénito secundario a hipoplasia tiroidea detectado en edad adulta

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    Paula Monti

    2013-04-01

    Full Text Available La ubicación anatómica de la glándula tiroidea y su biosíntesis hormonal están reguladas por la expresión de ciertos genes, cuya alteración puede conducir a las denominadas disgenesias tiroideas: agenesia, ectopía e hipoplasia, así como a las variantes dishormonogenéticas. Se presenta el caso de una paciente con retraso mental y diagnóstico de hipotiroidismo realizado en la edad adulta. Las determinaciones bioquímicas confirmaron el diagnóstico de hipotiroidismo no autoinmune. Este caso representa la evolución prolongada de una hipofunción tiroidea, que cursó en forma solapada y no diagnosticada durante 53 años de vida, con secuelas relevantes de esta deficiencia al momento del diagnóstico. La terapia exógena logró mejorías evidentes en la signo sintomatología, pero no revirtió el presunto daño neurológico atribuible a la falta de hormona tiroidea necesaria durante el desarrollo fetal. En la necropsia realizada se encontró escaso tejido tiroideo cervical correspondiente a hipoplasia tiroidea eutópica. El hallazgo de un remanente tiroideo menor a 1 cm permite explicar la supervivencia de la paciente hasta una edad avanzada.

  9. Fisher criteria vs. thyroid aspiration citology in the diagnosis of hashimoto's thyroiditis Valor de cuatro de los criterios de Fischer comarados con la biopsia tiroidea por aspiración en el diagnóstico de la tiroiditis de Hashimoto

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    Constanza Díaz González

    1991-02-01

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    One hundred and forty one patients with diffuse goiter were studied In order to evaluate four of Fisher's criteria for the diagnosis of Hashimoto's thyroiditis and to compare them with the result of thyroid aspiration biopsy. The following criteria were Included in the analysis: a physical characteristics of the gland; b appearance of the radioisotope scan; c plasma TSH concentration; d serum tilters of antithyroid antibodies. It was found that neither criteria was satisfactory in terms of sensitivity or specificity when compared with the result of the aspiration cytology. Ac. cordingly, we favor the use of the latter provided that adequate material is obtained and that an expert reading is performed.

    Se hicieron estudios clínico y de laboratorio y biopsia tiroidea por aspiración a 133 mujeres y 8 hombres con bocio difuso, de la Consulta Externa del Instituto de Seguros Sociales de Medellín, con el fin de comparar el valor diagnóstico de cuatro de los cinco criterios de Fisher con el de dicha biopsia, en la tiroiditis de Hashimoto. El diagnóstico citológico fue bocio simple (nodular, multinodular O coloide en 130 casos (92.2% y tiroiditis de Hashimoto en 11 (7.8%. Se aplicó la prueba tamiz a los criterios de Fisher, aisladamente O en grupos, con resultados deficientes en cuanto a sensibilidad y especificidad. Los criterios analizados fueron: a glándula moderadamente crecida, difusa y firme; b captación tiroidea Irregular; c TSH plasmática elevada; y d anticuerpos antitiroideos positivos a muy altas diluciones (≥:1 :25.000. La captación tiroidea Irregular tuvo la mayor sensibilidad (90% pero su especificidad fue sólo 11 %. En contraste, la sensibilidad y la especificidad de los títulos altos de anticuerpos antimicrosomales fueron 78% 71 %, respectivamente.

  10. Resistencia a la Hormona Tiroidea en dos familias colombianas. Identificación y caracterización de mutaciones en el receptor beta de la Hormona Tiroidea.

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    Paola Durán

    2013-03-01

    Full Text Available La resistencia a la hormona tiroidea es un desorden genético autosómico dominante que afecta a 1 de cada 40,000 nacidos. Se caracteriza por una respuesta reducida de los tejidos blandos a la hormona tiroidea con incremento de niveles de tiroxina y de triyodotironina, sin inhibición de la hormona tirotropa, como consecuencia de mutaciones presentes en el receptor beta de la hormona tiroidea, particularmente en el dominio de unión a la hormona. El fenotipo clínico varía entre diferentes familias e incluso entre miembros de la misma familia. Generalmente, los individuos con Resistencia a la Hormona Tiroidea pueden presentarla de una manera variable en diferentes tejidos, debido a síntomas heterogéneos de hipotiroidismo e hipertiroidismo. Los síntomas más comunes son bocio, taquicardia, déficit de atención, alteraciones auditivas y retraso en el crecimiento óseo. Pacientes y Métodos. En este estudio se caracterizaron clínica y molecularmente dos familias colombianas con Resistencia a la Hormona Tiroidea mediante análisis clínicos y genéticos, utilizando la reacción en cadena de la polimerasa y secuenciación del gen del receptor beta de la tiroxina (TRβ. Resultados. Se identificó una nueva mutación no sinónima en el exón 8 del gen TRβ, la cual lleva al cambio de una valina por una leucina en el codón 264 (V264L. También, se identificó una mutación de novo en el exón 10 del gen TRβ que consiste en una deleción de una citosina en el nucleótido 1609 que lleva a un cambio en el marco de lectura y finalmente a un codón de parada en la posición 442 (1609delC. Conclusiones. En Colombia, no existen mutaciones reportadas hasta el momento asociadas a Resistencia a la Hormona Tiroidea. Es de resaltar que las mutaciones encontradas en Colombia son únicas de nuestro país, lo cual debe tenerse en cuenta para una correcta asesoría genética.

  11. DISFUNCIÓN TIROIDEA Y CORAZÓN

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    Dr. Juan Ramón Soto S.

    2015-03-01

    Full Text Available Los trastornos de la función tiroidea afectan profundamente al sistema cardiovascular. En esta revisión se presentan algunos aspectos fisiológicos de la interrelación entre tiroides y corazón, como tambiècn las consecuencias de la tirotoxicosis e hipotiroidismo sobre el aparato cardiovascular. Se analiza la influencia del hipertiroidismo en la gècnesis de la fibrilación auricular y del hipotiroidismo en el metabolismo de las lipoproteínas. Adicionalmente, el artículo se referirá a los potenciales efectos adversos del antiarrítmico amiodarona sobre la función tiroidea y cómo se investigan y tratan. Finalmente, se expone un caso clínico real para ilustrar con mayor claridad la enorme importancia que pueden alcanzar las relaciones fisiopatológicas entre el corazón y las afecciones de esta glándula endocrina.

  12. Orbitopatía tiroidea Thyroid orbitopathy

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    Juana Elvira Maciques Rodríguez

    2012-12-01

    Full Text Available La orbitopatía tiroidea, también llamada orbitopatía de Graves, es una enfermedad inflamatoria, autoinmune y autolimitada que afecta los tejidos orbitarios y periorbitarios, es más frecuente en la mujer, y se asocia a estados de hipertiroidismo, aunque puede estar presente en pacientes hipotiroideos y eutiroideos, agravada por el tabaquismo y los estados de estrés. Se caracteriza, fundamentalmente, por retracción palpebral y exoftalmo, aunque en ocasiones puede evolucionar a formas graves con compromiso importante de la visión por neuropatía óptica compresiva o pérdida de la integridad del globo ocular. Su tratamiento va desde la simple protección del globo ocular en las formas leves, al uso de glucocorticoides u otros inmunosupresores, hasta la cirugía de descompresión orbitaria en los casos más graves, que son cada día menos cruentas y con resultados más esperanzadores. Esta revisión se realizó con el objetivo de unificar y actualizar los conocimientos sobre esta entidad, y proporcionar una información práctica para el diagnostico precoz y el tratamiento adecuado de nuestros pacientes.Thyroid orbitopathy, also known as Graves' orbitopathy, is an inflammatory, autoimmune, and self-limiting disease that affects orbital and periorbital tissues. It is more frequent in women and linked to hyperthyroidism condition, although it may occur in hypothyroid and euthyroid patients, worsened by smoking and stress. It is mainly characterized by palpebral retraction and exophtalmos, but it may sometimes evolve into severe forms with significant impact on the vision due to compressive optic neuropathy or the loss of the eyeball integrity. The treatment ranges from simple protection of the eyeball in the milder forms, the use of glycocorticoids or other immunosuppressive drugs to the orbital decompression surgery in the most severe cases, which are increasingly less painful and more hopeful. This review was aimed at standardizing and

  13. Disfunción tiroidea en adultos infectados por el virus de inmunodeficiencia humana

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    Erika Abelleira

    2014-08-01

    Full Text Available Los pacientes con infección por el virus de inmunodeficiencia humana (HIV tienen una mayor prevalencia de disfunción tiroidea cuando se los compara con la población general. Las manifestaciones más frecuentemente observadas son: el síndrome del eutiroideo enfermo, la enfermedad de Graves y el hipotiroidismo subclínico. La relación entre el uso de la terapia antirretroviral y el incremento en la prevalencia de alteraciones tiroideas fue demostrada en varias series de pacientes. La enfermedad de Graves se reconoce claramente como una consecuencia del síndrome de restitución inmune. Además, existen estudios que sugieren una relación entre hipotiroidismo y el uso de inhibidores nucleósidos de la transcriptasa reversa, en particular estavudina y el inhibidor no nucleósido de la transcriptasa reversa efavirenz. Nuevos estudios podrán aportar evidencia adicional sobre la necesidad de evaluaciones rutinarias de la función tiroidea en pacientes infectados por HIV.

  14. Disfunción tiroidea inducida por amiodarona en la práctica clínica

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    José Luis Paz-Ibarra

    2011-01-01

    Full Text Available La amiodarona (AMD es una droga antiarrítmica potente (clase III usada en la práctica clínica para la profilaxis y el tratamiento de muchos disturbios del ritmo cardiaco, desde la fibrilación auricular paroxística hasta las taquiarritmias ventriculares que amenazan la vida. Frecuentemente causa cambios en las pruebas de función tiroidea principalmente relacionados a la inhibición de la actividad de la 5'-deiodinasa, resultando en una disminución de la generación de T3 desde T4 y el consecuente incremento en la producción de T3 reversa y una disminución de su aclaramiento. En 14 a 18% de pacientes tratados con AMD hay una disfunción tiroidea manifiesta, ya sea tirotoxicosis inducida por amiodarona (TIA o hipotiroidismo inducido por amiodarona (HIA. Tanto TIA como HIA pueden desarrollarse en glándulas aparentemente normales o en glándulas con anormalidades preexistentes clínicamente silentes. La TIA está primariamente relacionada a la síntesis de hormonas tiroideas inducida por el exceso de yodo en una glándula tiroidea anormal (TIA tipo 1 o a una tiroiditis destructiva relacionada a la amiodarona (TIA tipo 2, aunque frecuentemente ocurren formas mixtas. La tiroiditis de Hashimoto preexistente es un factor de riesgo definido para la ocurrencia de HIA. La patogenia del HIA es la falla para escapar del efecto agudo de Wolff-Chaikoff inducido por el yodo, debido a los defectos en la hormonogénesis tiroidea y, en pacientes con pruebas de autoanticuerpos tiroideos positivos, para tiroiditis de Hashimoto concomitante. La TIA es más común en zonas deficientes de yodo mientras que el HIA es usualmente visto en zonas suficientes en yodo. En contraste al HIA, la TIA es una condición difícil de diagnosticar y tratar, y usualmente se recomienda la descontinuación de la amiodarona. En esta revisión se analiza, de acuerdo a los datos actuales, las alteraciones en las pruebas de función tiroidea vistas en pacientes eutirodeos bajo

  15. las disfunciones tiroideas mínimas

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    Carlos Hernández-Cassis

    2007-01-01

    Full Text Available El hipotiroidismo subclínico y sus consecuencias clínicas ha sido objeto de debate científico por espacio de varias décadas. A raíz de la publicación de la declaración de consenso acerca de la disfunción tiroidea subclínica en el año 2005, realizada por la Sociedad Americana de Endocrinologìa (The Endocrine Society, la Asociación Americana de Endocrinólogos Clínicos (AACE y la Asociación Americana de la Tiroides (ATA se abrió un nuevo espacio para los endocrinólogos en el manejo de algunas disfunciones tiroideas que no habían sido tenidas en cuenta dentro del campo de accion terapéutico. Los autores hacen un recuento de cómo se produce el cambio en los paradigmas y en el enfoque diagnostico y terapéutico. Luego hacen un recuento de algunas de las experiencias desarrolladas en Colombia. Finalmente sugieren algunos derroteros a partir de su propia experiencia y también basados en logros científicos de otras fuentes obtenidos en otros campos de la Endocrinologìa moderna.

  16. Patrones de prescripción de hormonas tiroideas en una población colombiana

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    Jorge Machado-Alba

    2014-08-01

    Full Text Available OBJETIVO: Determinar los patrones de prescripción de hormonas tiroideas en personas afiliadas al Sistema General de Seguridad Social en Salud de Colombia. MÉTODOS: Estudio descriptivo a partir de una base de datos poblacional de 6,2 millones de personas. Se seleccionaron los pacientes medicados con hormonas tiroideas, de uno y otro sexo y todas las edades, con tratamiento continuo de abril a junio de 2013. Se diseñó una base de datos sobre consumo de medicamentos, obtenidos por la empresa que dispensa dichos fármacos. RESULTADOS: Se hallaron 29 947 pacientes tratados para hipotiroidismo en 82 ciudades colombianas. La mayoría (79,1% eran mujeres, con una edad media de 63,2 ± 16,1 años. La presentación prescrita con mayor frecuencia fue levotiroxina en tabletas de 50 µg (85,7% a dosis diarias definidas mayores de las recomendadas, sobre todo como monoterapia. Se detectaron diferencias significativas entre los grupos etarios y las ciudades de residencia para el uso combinado de hormona tiroidea y de comedicación. Los medicamentos prescritos de manera concomitante con mayor frecuencia fueron los antiulcerosos (44%, hipoglucemiantes (17,4% y sales de hierro (16,1%. CONCLUSIONES: Existen diferencias significativas en las recetas de los médicos en las ciudades estudiadas. Hacen falta guías de manejo clínico que estandaricen las dosis y conductas médicas, pues es probable que su ausencia tenga impacto en la salud de los pacientes. Es necesario explorar la efectividad clínica de las prescripciones estudiadas.

  17. Patología maligna tiroidea. Hospital Sabogal, Callao

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    Juan Oré

    2004-03-01

    Full Text Available Objetivos: Determinar las características clínicas del cáncer de tiroides encontrados en la población del Callao. Diseño: Estudio descriptivo retrospectivo. Material y Métodos: Se revisó las historias clínicas de las intervenciones quirúrgicas de la glándula tiroides en el Hospital Nacional Alberto Sabogal Sologuren (HNASS, en el periodo enero de 2000 a diciembre de 2002, cuyo resultado por anatomía patológica fue compatible con neoplasia maligna de dicha glándula. Resultados: Las 45 neoplasias malignas primarias de tiroides encontradas representaron 34,2% de la patología tiroidea operada en el periodo en estudio. El carcinoma papilar se presentó en 100% de los pacientes de sexo masculino y en 82% del sexo femenino; en la mujer, los carcinomas folicular, medular y linfoma representaron 10,3%, 5,1% y 2,6%, respectivamente. El grupo etáreo con mayor incidencia fue entre 50 y 69 años, con una edad promedio de 53 años. Dentro de los diferentes tipos de neoplasias malignas, el más frecuente fue el papilar con 38 casos (84,4%, seguido de los carcinomas folicular y medular con 8,9% y 4,4%, respectivamente. El síntoma más frecuente fue el aumento de volumen (61,5%, seguido de dolor (15,4%, disfagia (10,8% y disfonía (9,2%; 29,6% se encontraba en estadio I y 59,1% en estadio II; sólo 11,4% estaba en estadio III. Conclusiones: El predominio de casos en mujeres del carcinoma papilar y la clínica asociada, fueron acordes con lo descrito en la literatura.

  18. Helical CT defecography; La defecografia con Tomografia Computerizzata spirale

    Energy Technology Data Exchange (ETDEWEB)

    Ferrando, R.; Fiorini, G.; Beghello, A.; Cicio, G.R.; Derchi, L.E.; Consigliere, M.; Resasco, M. [Genua Univ., Genua (Italy). Ist. di Radiologia, Cattedra R; Tornago, S. [Genua Univ. Genua (Italy). 2 Clinica Ortopedica

    1999-11-01

    The purpose of this work is to investigate the possible role of Helical CT defecography in pelvic floor disorders by comparing the results of the investigations with those of conventional defecography. The series analyzed consisted of 90 patients, namely 62 women and 28 men, ranging in age 24-82 years. They were all submitted to conventional defecography, and 18 questionable cases were also studied with Helical CT defecography. The conventional examination was performed during the 4 standard phases of resting, squeezing, Valsalva and straining; it is used a remote-control unit. The parameters for Helical CT defecography were: 5 mm beam collimation, pitch 2, 120 KV, 250 m As and 18-20 degrees gantry inclination to acquire coronal images of the pelvic floor. The rectal ampulla was distended with a bolus of 300 mL nonionic iodinated contrast agent (dilution: 3g/cc). The patient wore a napkin and was seated on the table, except for those who could not hold the position and were thus examined supine. Twenty-second helical scans were performed at rest and during evacuation; multiplanar reconstructions were obtained especially on the sagittal plane for comparison with conventional defecographic images. Coronal Helical CT defecography images permitted to map the perineal floor muscles, while sagittal reconstructions provided information on the ampulla and the levator ani. To conclude, Helical CT defecography performed well in study of pelvic floor disorders and can follow conventional defecography especially in questionable cases. [Italian] Scopo di questo lavoro e' ricercare un ruolo per la defeco-TC con apparecchiatura elicoidale nello studio delle malattie del pavimento pelvico confrontandola con i risultati consolidati della defecografia tradizionale. Si sono visionati 90 pazienti, 62 femmine e 28 maschi, con eta' compresa tra 24 e 82 anni, con defecografia tradizionale; di questi, 18 casi con diagnosi dubbia sono stati studiati anche con defeco-TC spirale

  19. Psicosis afectivas y no afectivas y función y autoinmunidad tiroideas. Influencia sobre evolución clínica y cognición

    OpenAIRE

    Barbero Valverde, Juan D

    2016-01-01

    Las alteraciones tiroideas se han propuesto como participantes importantes en la patogénesis de las psicosis afectivas y no afectivas. Tales alteraciones pueden modular la expresión de la enfermedad con implicaciones sobre su gravedad, evolución y pronóstico. Estudios previos han mostrado la influencia de la función y autoinmunidad tiroideas en la evolución de la enfermedad en pacientes psicóticos y bipolares. Sin embargo, el mecanismo de acción de esta modulación no ha sido aún esclarecida. ...

  20. Interrelación entre hormonas tiroideas y crecimiento: importancia clínica Interrelation between thyroid hormones and growth: clinical importance

    Directory of Open Access Journals (Sweden)

    Daysi A. Navarro Despaigne

    2005-12-01

    Full Text Available En la práctica clínica correspondiente a la endocrinología pediátrica, los trastornos del crecimiento son motivo frecuente de consulta y es la hipofunción tiroidea su causa más común. Por esta razón nos propusimos revisar aspectos teóricos relacionados con la función tiroidea, que pudieran explicar el mecanismo mediante el cual las hormonas tiroideas intervienen en el desarrollo del cartílago de crecimiento y del sistema nervioso central. Se revisa brevemente el mecanismo de regulación de las hormonas tiroideas y del efecto de los factores de crecimiento, tanto en la vida intrauterina como en la etapa posnatal. Se expone una hipótesis para explicar cómo ocurre la interrelación entre hormonas tiroideas (factores de crecimiento. Al final se hace referencia al impacto clínico del déficit de hormonas tiroideas durante la infancia.In the clinical practice of pediatric endocrinology, growth disorders is the most frequent reason to go to the doctor´s , being thyroid hypofunction the most common cause of this problem. For this reason, we intended to review theoretical aspects of thyroid function that could explain the mechanism by which thyroid hormones intervene in the development of growth cartilage and of the central nervous system. The regulating thyroid hormone mechanism along with the effect of growth factors on both intrauterine and postnatal life stages was briefly examined. A hypothesis of how the interrelation between thyroid hormones (growth factors occurs was presented. Finally, reference was made on the clinical impact of thyroid hormone deficit in childhood.

  1. Amiodarona y disfunción tiroidea Amiodarone and thyroid dysfunction

    Directory of Open Access Journals (Sweden)

    Leonardo F. L. Rizzo

    2012-02-01

    Full Text Available La amiodarona es un análogo estructural de la hormona tiroidea, y algunas de sus propiedades antiarrítmicas como así también su toxicidad son atribuibles a su interacción con los receptores nucleares de las hormonas tiroideas. Por ser muy lipofílica, la amiodarona se concentra en muchos tejidos y se elimina, por consecuencia, muy lentamente. Se emplea preferentemente para el tratamiento de arritmias graves tales como fibrilación y taquicardia ventriculares. Otras indicaciones incluyen la fibrilación auricular y el aleteo, la insuficiencia cardíaca congestiva grave, la prevención de la fibrilación auricular recurrente y situaciones de emergencia médica como la prevención de muerte súbita cardiaca¹. Nuestro objetivo es proporcionar un enfoque actualizado sobre la amiodarona y su influencia sobre la fisiología tiroidea y discutir y analizar en profundidad sus potenciales efectos adversos como el hipotiroidismo y la tirotoxicosis.Amiodarone is a structural analogue of thyroid hormone, and some of its anti-arrhythmic actions and toxicity are attributable to its interaction with nuclear receptors of thyroid hormones. Being highly lipophilic, amiodarone is concentrated in many tissues and is eliminated, consequently, very slowly. It is preferably employed to manage life-threatening arrhythmias, including ventricular fibrillation and unstable ventricular tachycardia. Other indications include atrial fibrillation and flutter, severe congestive heart failure, prevention of atrial fibrillation recurrence, and even in emergency medical situations to prevent sudden cardiac death. The aim of this review is to provide an updated approach on amiodarone and its influence on thyroid physiology and to discuss and analyze in depth its potential and not infrequent thyroidal adverse effects such as hypothyroidism and thyrotoxicosis.

  2. Noncardiac findings on cardiac CT part I: Pros and cons.

    LENUS (Irish Health Repository)

    Killeen, Ronan P

    2012-02-01

    Cardiac computed tomography (CT) has evolved into an effective imaging technique for the evaluation of coronary artery disease in selected patients. Two distinct advantages over other noninvasive imaging modalities include its ability to evaluate directly the coronary arteries and to provide an opportunity to evaluate extracardiac structures, such as the lungs and mediastinum. Some centers reconstruct a small field of view (FOV) cropped around the heart, but a full FOV (from skin to skin in the irradiated area) is obtainable in the raw data of every scan so that clinically relevant noncardiac findings are identifiable. Debate in the scientific community has centered on the necessity for this large FOV evaluation. A review of noncardiac structures provides the opportunity to make alternative diagnoses that may account for the patient\\'s presentation or to detect important but clinically silent problems such as lung cancer. Critics argue that the yield of biopsy-proven cancers is low and that the follow-up of incidental noncardiac findings is expensive, resulting in increased radiation exposure and possibly unnecessary further testing. In this two-part review we outline the issues surrounding the concept of the noncardiac read looking for noncardiac findings on cardiac CT. Part I focuses on the pros and cons of the practice of identifying noncardiac findings on cardiac CT.

  3. Tissue Metabolism of Tritium-Labelled Thyroid Hormones and Thyronine; Sur le Metabolisme Cellulaire d'Hormones Thyroiediennes Marquees par le Tritium; 0422 043a 0430 043d 0435 0432 044b 0439 043c 0414 ; Metabolismo de las Hormonas Tiroideas y de la Tironina Marcadas con {sup 3}H en los Tejidos

    Energy Technology Data Exchange (ETDEWEB)

    Roche, J.; Nunez, J.; Jacquemin, Cl. [Laboratoire de Biochimie Generale et Comparee, College de France, Paris (France)

    1962-02-15

    . La 3'-hydroxythyronine et la 3,4-dihydroxyphenylalanine dont la presence illustre la participation de processus d'o-hydroxylation dans le catabolisme des cycles. -3. Les acides thyroacetiques et p-hydroxyphenylacetique dont l'apparition repond au schema general de la degradation des acides a-amines. (author) [Spanish] La eliminacion de yodo de las hormonas tiroideas da origen a yoduros y a tironina (T{sub 0}) que el autor ha caracterizado en cortes de tejido o en un preparado de tiroxinodesyodasa. El autor aporta una prueba directa de este proceso: la 3, 5, 3'-triyodotironina y la 3, 3', 5'-triyodotironina, marcadas, respectivamente, en {alpha}, {beta} y en 3 con {sup 3}H conducen a la formacion de T{sub 0} y de otros compuestos en el rinon. La identificacion de la T{sub 0} como derivado natural de las hormonas tiroideas justificaba el estudio de su metabolismo en los tejidos; el autor incubo T{sub 0}, marcada en 3 y 5 con {sup 3}H, junto con cortes de rinon y de musculo. Por radiocromatografia con contador de centelleo liquido y por autorradiografia logro determinar: 1) Tirosina, cuya formacion constituye una prueba de la ruptura del puente difenileter de la T{sub 0}. 2) 3'-hydroxitironina y 3,4-dihidroxifenilalanina, compuestos cuya presencia indica que en el catabolismo de los cielos intervienen procesos de O-hidroxilacion. 3) Los acidos tiroacetico y p-hidroxifenilacetico, cuya aparicion concuerda con el esquema general de la degradacion de los a-aminoacidos. (author) [Russian] Obeziozhivanie shhitovidnyh gormonov vedet k obrazovaniju iodidov i tironina (T{sub 0}), harakternaja osobennost' kotoryh byla dostignuta na osnovanii tkanevyh razrezov ili prigotovlenija obeznozhennogo tiroksina. Privoditsja neposredst- vennoe dokazatel'stvo jetogo processa: 3,5 i 3's trehiodistym tironinom i 3. 3' i 5 s trehiodistym tironinom mechennyh sootvetstvenno i al'fa i beta luchami i 3 mechennogo tritiem, vedut, mezhdu prochim, k obrazovaniju v pochke tironina. Identifikacija

  4. Depresion en pacientes con alteraciones del tiroides

    OpenAIRE

    Radanovic-Grguric´, Ljiljana; Filakovic´, Pavo; Barkic´, Jelena; Mandic´, Nikola; Karner, Ivan; Smoje, Juraj

    2003-01-01

    Nuestro estudio fue realizado en un grupo de 53 mujeres con disfunción tiroidea y 28 mujeres con depresión mayor. Empleamos la Escala de la Depresión de Hamilton, la Escala de Autoevaluación de la Depresión de Zung y la Escala sobre la Impresión Clínica Global. Los resultados del estudio demuestran que la mayoría de los pacientes con disfunción tiroidea se mostraron clínicamente significativos en cuanto al trastorno depresivo. Los episodios depresivos son más frecuentes en pacientes con hipot...

  5. Autoinmunidad tiroidea: Recuerdos personales (1957-1959

    Directory of Open Access Journals (Sweden)

    Efraim Otero Ruiz

    2011-07-01

    Full Text Available

    He creído importante transcribir estas reminiscencias, pues hacen parte del sudor y esfuerzo que muchos colombianos hemos brindado para contribuir con nuestro grano de arena a investigaciones que, en la segunda mitad del siglo XX, transformaron y dieron nueva luz al pensamiento inmunológico.

    Puede decirse que en la segunda mitad de la década de los años 5Os se vivió una de las épocas más excitantes en el Departamento de Medicina del Columbia- Presbyterian Medical Center (Presbyterian Hospital o PH en la calle 168 de la ciudad de Nueva York. El Director (Chairman del Departamento era el Profesor Robert F. Loeb, uno de los internistas más prestigiosos del mundo, coautor del texto de Medicina Interna de Cecil Loeb, la biblia médica para los no iniciados. Alrededor de él se congregaba -como podía observarse los martes en las Clínicas Endocrinas Combinadas, celebradas en el enorme torreón o anfiteatro que databa de comienzos del siglo- la élite del conocimiento médico y científico, personas que sacaban tiempo de sus investigaciones para dictar las diversas cátedras: Severo Ochoa -el Premio Nobel español, tan adusto como su nombre- en genética, -proveniente del New York Hospital que compartía con Presbyterian y con Bellevue el triunvirato de la medicina interna y las clínicas combinadas-; Sydney Werner y Ken Sterling (tiroides, Dana Atchley (electrolitos, cetoacidosis diabética y Seymour Lieberman (suprarrenales en endocrinología; Franklin Hanger en Hepatología; Beatrice Seegal en inmunología y transplantes; y, por supuesto, como profesores visitantes, Salomón Berson y Rosalyn Yalow (diabetes procedentes del Hospital de Veteranos del Bronx, sin contar con los innumerables profesores asistentes o visitantes, más jóvenes, que después brillarían con luz propia. Se asistía no sólo a la primera infancia de la nueva genética (nacida con la doble hélice de Watson y Crick en 1953 sino del atrevido concepto

  6. Pros and cons of organ shielding for CT imaging

    International Nuclear Information System (INIS)

    Samei, Ehsan

    2014-01-01

    With the increased importance of CT radiation dose to health care providers, patients and the general public, there is an increased responsibility to minimize patient dose effectively. Bismuth shields offer a simple strategy to reduce dose to certain anterior radiosensitive organs such as breasts and eyes. However, in order to reduce organ dose they must be used properly; improper use can lead to an actual increase in the patient dose. They also create a proportional increase in image noise in the section of the body adjacent to the shield and further reduce the quantitative precision of CT numbers. In addition, shielding can degrade the overall efficiency (by an order of approximately 10%) of the imaging process, reducing the theoretical image quality that can be expected from a certain level of patient dose. However, in spite of their significant disadvantages, there are certain clinical situations and practice considerations that provide qualified justification for their continued use. (orig.)

  7. Efecto de la raza y la edad sobre las concentraciones de hormonas tiroideas T3 y T4 de bovinos en condiciones tropicales

    Directory of Open Access Journals (Sweden)

    Rómulo Campos Gaona

    2008-06-01

    Full Text Available Para estudiar el efecto en condiciones de trópico seco de la edad y del grupo racial sobre las concentraciones séricas de las hormonas tiroideas T3 y T4, se muestrearon 158 animales de los grupos raciales Holstein, Lucerna, Hartón del Valle, Cebú Brahman y mestizo F1 (Cebú Brahman x Pardo Suizo, distribuidos en cuatro grupos de edad desde el nacimiento hasta el destete (8 meses. La concentración media de T3 fue 2.25 mmol/L y la de T4, 57.37 mmol/L. La correlación entre T3 y T4 fue de 0.53. Se encontró diferencia estadísticamente significativa para el efecto grupo racial, grupo de edad (P<0.001 pero no para la interacción grupo racial x edad (p=0.286. Los grupos raciales con concentraciones más elevadas fueron Holstein y Lucerna; la concentración más baja se presentó en los bovinos mestizos. La mayor concentración de hormonas tiroideas según la edad ocurrió en recién nacidos, luego descendió progresiva y linealmente. El trabajo encontró que en condiciones de trópico seco, en zona límite de termoneutralidad según el índice ITH, los bovinos jóvenes presentanron diferencias marcadas en las concentraciones de hormonas tiroideas

  8. Enfermedad tiroidea subclínica: revisión y enfoque clínico

    Directory of Open Access Journals (Sweden)

    Dr. G. Claudio Liberman

    2013-09-01

    Full Text Available La enfermedad tiroidea subclínica (ETS es una condición asintomática de alta prevalencia que incluye el hipertiroidismo subclínico (HiperSC y el hipotiroidismo subclínico (HipoSC. Ambas formas no tienen síntomas ni signos específicos y solamente pueden ser detectados mediante exámenes hormonales. Las causas más frecuentes de HiperSC son la enfermedad de Graves y el bocio multinodular. De HipoSC la causa más frecuente es la tiroiditis crónica autoinmune (enfermedad de Hashimoto. El criterio diagnóstico para HiperSC es TSH sérica de ≤0.4 mU/L y valores normales deT4 total o libre. El criterio diagnóstico para HipoSC es TSH sérica de 4.5-10mU/L junto con valores normales de T4 total o libre. Ambas se consideran más severas cuando los valores de TSH se alejan del valor normal: 10mU/L en HipoSC. En la ETS las alteraciones cardiovasculares son frecuentes, pero de distinta índole, así en el HiperSC hay mayor riesgo de arritmias supraventriculares mientras en el HipoSC hay un riesgo aumentado de dislipidemia y ateroesclerosis. En este artículo se analizan los aspectos diagnósticos de la ETS, sus complicaciones y se propone un plan de manejo desde una perspectiva clínica.

  9. Estimación de la prevalencia de hipotiroidismo en Lleida a partir de la prescripción de hormonas tiroideas

    Directory of Open Access Journals (Sweden)

    M. Catalina Serna Arnáiz

    2003-01-01

    Full Text Available Fundamento: El hipotiroidismo es una enfermedad frecuente, que cursa con una sintomatología, en ocasiones inespecífica, lo que dificulta el diagnóstico. El objetivo del estudio es estimar la prevalencia de hipotiroidismo en Lleida a través de las prescripciones de la hormona tiroidea y comparar los resultados con los de otras regiones. Métodos: Estudio observacional retrospectivo. 2.854 personas que reciben tratamiento con hormona tiroidea mediante receta de la Seguridad Social. Meses de octubre a diciembre del 2001. Variables: la edad, el sexo y región sanitaria. Resultados: La prevalencia de hipotiroidismo en el 2001 es de 8,4 casos por 1.000 habitantes día (IC 95%:9,23-7,47. La edad media es de 60 años (DS<:16,6. La distribución por sexo: 2,4 ‰ en hombres y 12,4 ‰ en mujeres. Por grupos de edad: Menores de 15 años un 3,6‰, entre 15 y 64 años de 6,8 ‰ y en mayores de 64 de 12,5. Las cifras más elevadas se encuentran en las áreas rurales (Seu d’Urgell:10,5 ‰y las inferiores en áreas urbanas(Eixample:5,8 ‰, Balafia:5,4‰ Conclusiones: La cifra de hipotiroidismo en tratamiento es, como en otros estudios, superior en mujeres y predomina en los mayores de 64 años. Sin embargo, observamos valores de prevalencia inferiores en relación a los datos de un estudio poblacional previo de la misma región, indicando un posible infradiagnóstico de la enfermedad.

  10. Estimación de la prevalencia de hipotiroidismo en Lleida a partir de la prescripción de hormonas tiroideas

    Directory of Open Access Journals (Sweden)

    Serna Arnáiz M.ª Catalina

    2003-01-01

    Full Text Available Fundamento: El hipotiroidismo es una enfermedad frecuente, que cursa con una sintomatología, en ocasiones inespecífica, lo que dificulta el diagnóstico. El objetivo del estudio es estimar la prevalencia de hipotiroidismo en Lleida a través de las prescripciones de la hormona tiroidea y comparar los resultados con los de otras regiones. Métodos: Estudio observacional retrospectivo. 2.854 personas que reciben tratamiento con hormona tiroidea mediante receta de la Seguridad Social. Meses de octubre a diciembre del 2001. Variables: la edad, el sexo y región sanitaria. Resultados: La prevalencia de hipotiroidismo en el 2001 es de 8,4 casos por 1.000 habitantes día (IC 95%:9,23-7,47. La edad media es de 60 años (DS<:16,6. La distribución por sexo: 2,4 ? en hombres y 12,4 ? en mujeres. Por grupos de edad: Menores de 15 años un 3,6?, entre 15 y 64 años de 6,8 ? y en mayores de 64 de 12,5. Las cifras más elevadas se encuentran en las áreas rurales (Seu d'Urgell:10,5 ?y las inferiores en áreas urbanas(Eixample:5,8 ?, Balafia:5,4? Conclusiones: La cifra de hipotiroidismo en tratamiento es, como en otros estudios, superior en mujeres y predomina en los mayores de 64 años. Sin embargo, observamos valores de prevalencia inferiores en relación a los datos de un estudio poblacional previo de la misma región, indicando un posible infradiagnóstico de la enfermedad.

  11. Estimación de la prevalencia del hipotiroidismo en castilla y león y su evolución desde 1992 al 2000 a través del consumo de hormonas tiroideas

    Directory of Open Access Journals (Sweden)

    Alfonso Díaz Madero

    2001-01-01

    Full Text Available Fundamento: La importancia que tiene el hipotiroidismo desde el punto de vista epidemiológico y la dificultad de disponer de unos datos actualizados, nos ha llevado a realizar este estudio cuyo objetivo es conocer el consumo de hormonas tiroideas en la población general en el ámbito de la seguridad social en la Comunidad de Castilla y León, por provincias, así como su evolución desde 1992 al 2000, como indicador estimativo de la prevalencia del hipotiroidismo. Métodos: A partir de la base de datos ECOM del Ministerio de Sanidad y Consumo, se obtienen el número de envases de hormonas tiroideas dispensados con receta de la seguridad social, en las provincias de Castilla y León durante el periodo 1992-2000, estimando la prevalencia por medio de las dosis diarias definidas (DDD por 100.000 habitantes. Resultados: Se estima una prevalencia de hipotiroidismo en Castilla y León de 185 casos por 100.000 habitantes en 1992 que aumenta a 489 en el 2000, constituyendo un incremento del 164%. Ello representa en 1992 entre 4.559-4.827 enfermos y entre 11.929-12.360 en el 2000. El aumento de la prevalencia se observa en todas las provincias. Las provincias con mayor prevalencia son León, Soria y Ávila, siendo Palencia, Salamanca y Burgos las de menor. Conclusiones: La especificidad del tratamiento nos ha permitido establecer una relación entre el consumo de hormonas tiroideas y la prevalencia del hipotiroidismo, así como su evolución desde 1992 al 2000, aproximándonos a la situación actual de esta patología en Castilla y León.

  12. PREVALENCIA DE HIPOTIROIDISMO EN ANDALUCÍA SEGÚN EL CONSUMO DE HORMONA TIROIDEA EN 2014

    Directory of Open Access Journals (Sweden)

    José Escribano-Serrano

    2016-01-01

    Full Text Available Fundamento: El hipotiroidismo es la condición más común ligada a un déficit hormonal. A pesar de ello existe una escasez de datos en España sobre su su prevalencia. El objetivo fue estimar la prevalencia en Andalucía a través del registro de pacientes que consumieron hormona tiroidea durante el año 2014. Método: Se recuperaron los datos de las personas que habían retirado de la farmacia levotiroxina con cargo al sistema público durante 2014 de la base de datos del Servicio Andaluz de Salud. Se calcularon las prevalencias con sus intervalos de confianza del 95% para cada Área de Gestión, estratificadas por sexo y grupos etarios. Resultados: Se identificaron 321.368 personas (98% mayores de 18 años y 83% mujeres consumidoras de levotiroxina y se estimó una prevalencia de hipotiroidismo del 3,95% (IC95%: 3,943,96 para población general. La condición era más común en la mujer, en mayores de 18 años un 7,81% (IC95 7,80 a 7,82 comparada con el hombre 1,75% (IC95 1,73 a 1,77 con una razón de 4,5. Aumenta en la población de mujeres mayores de 45 años, 10,32% (IC95 10,30 a 10,32 y más en las mayores de 60 años 11,37% (IC95%: 11,35 a 11,40. La prevalencia en mujer adulta de las provincias occidentales fue 7,38% (IC95%: 7,36-7,40, en las orientales de 8,59% (IC95%: 8,57-8,62 y en las áreas costeras fue de 6,70% (IC95%: 6,68-6,72 frente a las montañosas que fue 8,91% (IC95%: 8,88-8,94. Conclusión: Los resultados indican una elevada prevalencia de hipotiroidismo en la población adulta de Andalucía, con un claro predominio de la mujer y un incremento con la edad. Además, la prevalencia de la enfermedad también presenta una importante variabilidad geográfica.

  13. Alteraciones estructurales de la glándula tiroidea tras la radioterapia Structural alterations of thyroid gland after radiotherapy

    Directory of Open Access Journals (Sweden)

    Caridad Verdecia Cañizares

    2009-03-01

    Full Text Available INTRODUCCIÓN. El objetivo de la presente publicación fue comunicar los casos detectados en nuestro estudio de anomalías estructurales de la glándula tiroidea en pacientes que recibieron radioterapia para el tratamiento de tumores malignos de cabeza y cuello. MÉTODOS. Se realizó un estudio descriptivo de corte transversal para determinar la prevalencia de alteraciones estructurales de la glándula tiroides en 43 pacientes sobrevivientes de tumores malignos de cabeza y cuello, que habían recibido radioterapia y que fueron atendidos en los Hospitales Pediátricos Docentes «William Soler» y «Juan Manuel Márquez» en un período de 10 años (1990 a 2000. RESULTADOS. La alteración estructural de la glándula tiroides más frecuente fue la fibrosis glandular (18,5 %, seguida del adenoma tiroideo y de quistes simples de la glándula (11,1 % respectivamente. Hubo 2 casos de carcinoma diferenciado de la glándula tiroides (7,4 % y uno de lesión mixta adenofolicular (3,7 %. La citología aspirativa con aguja fina permitió la detección de la mayoría de estas lesiones y posibilitó, guiada por ecografía, la detección de lesiones intraparenquimatosas de la glándula. El tratamiento de las alteraciones encontradas fue quirúrgico y se practicó tiroidectomía total a los dos pacientes con carcinoma diferenciado de la glándula tiroides, tiroidectomía subtotal a los tres pacientes con quistes de la glándula y adenomas tiroideos. En los casos de fibrosis glandular se detectó hipofunción tiroidea concomitante, por tanto se administró tratamiento sustitutivo con levotiroxina. CONCLUSIONES. La citología aspirativa con aguja fina guiada mediante ecografía de la glándula tiroides permitió diagnosticar alteraciones estructurales no detectadas en el examen físico. La patología maligna más irradiada correspondió a los linfomas no Hodgkin. Cuanto mayor es la dosis de irradiación, mayor es la patología tiroidea.INTRODUCTION: The aim of

  14. Enfermedad tiroidea autoimnune en pacientes con bocio y/o hipotiroidismo

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    Guido Lastra

    1998-01-01

    Full Text Available We studied the presence of antithyroid antibodies in subjects with slight to overt thyroid disfunction. Fifty nine subjects that showed goiter or TSH levels above 5.0 mU/L were included. The percentage of patients with positive anti Thyroid Peroxidase antibodies (anti TPO was 18.63%. From them, 90.9% exhibited goiter along with thyroid dysfunction, whereas only 9.1 % had goiter without thyroid disfunction. There was no patient without goiter that showed anti TPO levels above 100 mUl/ mL.We conclude that thyroid autoimmune disease is very prevalent among our patients, so it must be suspected in subjects with or without goiter, as well as in those with slight thyroid disfunction, because it could progress to overt hypothyroidism.

  15. De la tiroidectomía a la tiroidectomía costo-efectiva. El concepto de minimalismo en cirugía tiroidea

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    Álvaro Sanabria

    2017-06-01

    Full Text Available La tiroidectomía constituye el procedimiento endocrino y la cirugía cervical más frecuente que realizan los cirujanos generales. Desde hace varios años, se ha evaluado la utilidad de muchos de los pasos que se realizan durante el procedimiento quirúrgico. El uso u omisión de cada uno de ellos puede aumentar o disminuir la efectividad y los costos del procedimiento global. En ese sentido, si fuera posible mantener los altos estándares de resultados del procedimiento quirúrgico, eliminado el uso de recursos que no han demostrado efectividad, sería posible lograr un impacto importante sobre la atención y distribuir mejor los recursos en otras intervenciones. El presente manuscrito muestra el proceso llevado a cabo por el autor desde hace más de 10 años, con el fin de depurar la intervención de la tiroidectomía en términos de emplear solo los pasos que se muestren efectivos, costo-efectivos y que puedan ser aplicables al contexto del sistema de salud colombiano, buscando un uso racional de los recursos quirúrgicos y una mayor calidad del servicio médico para el paciente y la familia, esto con el ánimo de desarrollar el concepto de cirugía tiroidea minimalista.

  16. Initial thoracic involvement in lymphoma. CT assessment; Afectacion toracica inicial en el linfom. Valoracion con TC

    Energy Technology Data Exchange (ETDEWEB)

    Bustos, A.; Corredoira, J.; Ferreiros, J.; Cabeza, B.; Jorquera, M.; Pedrosa, I.; Martinez, R.; Fernandez, C. [Hospital Clinico San Carlos. Madrid (Spain)

    2002-07-01

    To analyze the initial thoracic involvement by CT in a consecutive series of patients with lymphoma. A retrospective analysis was made of thoracic CT studies made at the time of diagnosis of 259 patients with lymphoma. Mediastinal pulmonary, pleural, pericardial and chest wall involvement was assessed by CT. Of 259 patients (129 men y 130 women), 56 had Hodgkin's disease (HD) and 203 had non-Hodgkin lymphoma (NHL). Forty-two percent (42.5%, 110/259) of the patients had chest involvement on CT: 33 of 56 patients with HD (58.9%) and 77 of 203 patients with NHL (37.9%). All the patients with thoracic HD and 71.4% of patients with thoracic NHL, had mediastinal lymph node involvement. of the patients with thoracic involvement 12.1% (4/33) of the patient with HD and 23.3% (18/77) of the patients with NHL had pulmonary involvement. Thoracic involvement on CT was more frequent in HD. Mediastinal lymph node involvement was the most common finding fundamentally in HD. Pulmonary disease always occurred in the presence of mediastinal lymph node involvement in HD but could occur as an isolated finding in NHL. (Author) 24 refs.

  17. Estimación de la prevalencia de hipotiroidismo en España a partir del consumo de hormonas tiroideas (1996-1999

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    Morant Ginestar Consuelo

    2001-01-01

    Full Text Available Fundamento: Ante la escasez de datos acerca de la prevalencia de hipotiroidismo en España, se decide estimarla a través del consumo de su tratamiento específico, las hormonas tiroideas, utilizando la metodología de los estudios de utilización de medicamentos. Métodos: Cálculo de la Dosis Habitante Día (DHD de hormonas tiroideas (grupo terapéutico H03 de la Anatomical Therapeutic Chemical a través de la Dosis Diaria Definida (DDD, durante 1996 y 1999, en las distintas provincias de las Comunidades Autónomas de todo el territorio nacional. Se han calculado los intervalos de confianza al 95 % para las prevalencias estimadas en las comunidades autónomas y en el territorio nacional, así como los incrementos porcentuales de 1999 respecto a 1996. Los datos de las prescripciones han sido facilitados por el Ministerio de Sanidad y Consumo. Resultados: Se estima una prevalencia nacional de hipotiroidismo para 1996, de 3,19 casos por 1.000 habitantes y para 1999, de 4,33 casos por 1000 habitantes; el incremento porcentual es de 26,38 %. Los resultados de la DHD muestran diferencias en la prevalencia entre provincias: Guadalajara presenta las cifras más altas en los dos años estudiados(5,02 y 7,01 casos por 1.000 habitantes/día en 1996 y 1999 respectivamente y Melilla, las más bajas (1,07 y 1,60 casos por 1.000 habitantes/día. En todas las provincias y comunidades autónomas se ha producido un incremento de la DHD en el año 1999 respecto al 1996. El incremento menor fue para Asturias (9,62 % y el más alto para La Rioja (35,26 %. Conclusiones: Los 3,19 y 4,33 DDD por 1.000 habitantes/día en 1996 y 1999 respectivamente, pueden ser interpretados como la prevalencia de hipotiroidismo diagnosticado y tratado. Estas cifras se hallan en el intervalo determinado por otros estudios, aunque las comparaciones entre estudios de diferente metodología deben hacerse con extremada precaución. El incremento observado en el consumo podría explicarse m

  18. Estimación de la prevalencia de hipotiroidismo en españa a partir del consumo de hormonas tiroideas (1996-1999

    Directory of Open Access Journals (Sweden)

    Consuelo Morant Ginestar

    2001-01-01

    Full Text Available Fundamento: Ante la escasez de datos acerca de la prevalencia de hipotiroidismo en España, se decide estimarla a través del consumo de su tratamiento específico, las hormonas tiroideas, utilizando la metodología de los estudios de utilización de medicamentos. Métodos: Cálculo de la Dosis Habitante Día (DHD de hormonas tiroideas (grupo terapéutico H03 de la Anatomical Therapeutic Chemical a través de la Dosis Diaria Definida (DDD, durante 1996 y 1999, en las distintas provincias de las Comunidades Autónomas de todo el territorio nacional. Se han calculado los intervalos de confianza al 95 % para las prevalencias estimadas en las comunidades autónomas y en el territorio nacional, así como los incrementos porcentuales de 1999 respecto a 1996. Los datos de las prescripciones han sido facilitados por el Ministerio de Sanidad y Consumo. Resultados: Se estima una prevalencia nacional de hipotiroidismo para 1996, de 3,19 casos por 1.000 habitantes y para 1999, de 4,33 casos por 1000 habitantes; el incremento porcentual es de 26,38 %. Los resultados de la DHD muestran diferencias en la prevalencia entre provincias: Guadalajara presenta las cifras más altas en los dos años estudiados(5,02 y 7,01 casos por 1.000 habitantes/ día en 1996 y 1999 respectivamente y Melilla, las más bajas (1,07 y 1,60 casos por 1.000 habitantes/día. En todas las provincias y comunidades autónomas se ha producido un incremento de la DHD en el año 1999 respecto al 1996. El incremento menor fue para Asturias (9,62 % y el más alto para La Rioja (35,26 %. Conclusiones: Los 3,19 y 4,33 DDD por 1.000 habitantes/ día en 1996 y 1999 respectivamente, pueden ser interpretados como la prevalencia de hipotiroidismo diagnosticado y tratado. Estas cifras se hallan en el intervalo determinado por otros estudios, aunque las comparaciones entre estudios de diferente metodología deben hacerse con extremada precaución. El incremento observado en el consumo podría explicarse

  19. Aspectos da função tireóidea em lactentes submetidos à cirurgia cardíaca com circulação extracorpórea Aspectos de la función tiroidea en lactantes sometidos a cirugía cardíaca con circulación extracorpórea Thyroid function profile in infants submitted to cardiac surgery with cardiopulmonary bypass

    Directory of Open Access Journals (Sweden)

    Paula Maria da Cruz

    2004-06-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A cirurgia cardíaca com circulação extracorpórea (CEC relaciona-se à doença eutireóidea ou à depressão do eixo hipotálamo-hipofisário-tireóideo. O estado hemodinâmico incomum imposto pela CEC é responsável por diversas alterações endócrino-metabólicas, acarretando complexa resposta inflamatória sistêmica. Esta investigação teve como objetivo analisar o comportamento da triiodotironina (T3, tetraiodotironina (T4 e tireotrofina (TSH em lactentes submetidos à cirurgia cardíaca com CEC. MÉTODO: Foram estudados 15 lactentes. As amostras de sangue para pesquisa de T3, T4 e TSH foram obtidas em 4 momentos designados: M1 - após a indução da anestesia; M2 - após o final da cirurgia; M3 - 6 horas após o final da cirurgia e M4 - 24 horas após o M1. Para complementar esta investigação, foram estudadas as variações dos seguintes parâmetros: pressão arterial média (PAM, temperatura sangüínea central (ºC, atributos da oxigenação tecidual e do equilíbrio ácido-base (M1, CEC, M2, M3 e M4. RESULTADOS: As médias de idade, peso, altura e superfície corpórea dos pacientes foram 3,9 meses; 4,708 kg; 0,65 m e 0,3 m², respectivamente. As concentrações plasmáticas de T3 (p JUSTIFICATIVA Y OBJETIVOS: La cirugía cardíaca con circulación extracorpórea (CEC relacionase a la enfermedad eutiroidea o a la depresión del eje hipotálamo-hipofisário-tiroideo. El estado hemodinámico incomún impuesto por la CEC es responsable por diversas alteraciones endócrino-metabólicas, acarreando compleja respuesta inflamatoria sistémica. Esta investigación tuvo como objetivo analizar el comportamiento de la triiodotironina (T3, tetraiodotironina (T4 y tireotrofina (TSH en lactantes sometidos a cirugía cardíaca con CEC. MÉTODO: Fueron estudiados 15 lactantes. Las muestras de sangre para pesquisa de T3, T4 y TSH fueron obtenidas en 4 momentos designados: M1 - después de la inducción de la anestesia

  20. De la tiroidectomía a la tiroidectomía costo-efectiva. El concepto de minimalismo en cirugía tiroidea

    Directory of Open Access Journals (Sweden)

    Álvaro Sanabria

    2017-06-01

    Full Text Available La tiroidectomía constituye el procedimiento endocrino y la cirugía cervical más frecuente que realizan los cirujanos generales. Desde hace varios años, se ha evaluado la utilidad de muchos de los pasos que se realizan durante el procedimiento quirúrgico. El uso u omisión de cada uno de ellos puede aumentar o disminuir la efectividad y los costos del procedimiento global. En ese sentido, si fuera posible mantener los altos estándares de resultados del procedimiento quirúrgico, eliminado el uso de recursos que no han demostrado efectividad, sería posible lograr un impacto importante sobre la atención y distribuir mejor los recursos en otras intervenciones. El presente manuscrito muestra el proceso llevado a cabo por el autor desde hace más de 10 años, con el fin de depurar la intervención de la tiroidectomía en términos de emplear solo los pasos que se muestren efectivos, costo-efectivos y que puedan ser aplicables al contexto del sistema de salud colombiano, buscando un uso racional de los recursos quirúrgicos y una mayor calidad del servicio médico para el paciente y la familia, esto con el ánimo de desarrollar el concepto de cirugía tiroidea minimalista. From thyroidectomy to cost-effective thyroidectomy. The concept of minimalism in surgeryAbstractThyroidectomy is both the most frequent endocrine procedure and cervical surgery performed by general surgeons. The usefulness of many of the steps performed during the surgical procedure has been evaluated for several years. The use or omission of each of these steps may increase or decrease the effectiveness and costs of the overall procedure. In that regard, if the high standards of thyroidectomy results could be maintained when resources not proven to be effective are eliminated, that could have a significant impact on care and those resources could be directed to other interventions. The author of this paper describes the process undertaken by him for longer than 10 years, in

  1. Linfoma tiroideo en paciente con tiroiditis de Hashimoto

    OpenAIRE

    Carmen Aravena G.; Daniela Aguayo Y.; Francisca Marín A.; Felipe Cayumil F.

    2014-01-01

    INTRODUCCIÓN: El linfoma tiroideo (LT) es una neoplasia infrecuente (menos del 1% de linfomas y menos del 2% de neoplasias tiroideas). Su incidencia es mayoritaria en mujeres, entre 60 y 75 años. La tiroiditis de Hashimoto es un importante factor de riesgo. El objetivo es destacar la importancia del estudio precoz del bocio rápidamente progresivo. PRESENTACIÓN DEL CASO: Hombre de 63 años, con antecedentes de hipertensión arterial, tabaquismo crónico activo e hipotiroidismo por tiroiditis de H...

  2. Liver trauma from penetrating injuries. Miscellanea, personal series, clinical and CT findings; Traumi epatici da lesioni penetranti. Miscellanea, casistica personale, aspetti clinici e con Tomografia Computerizzata

    Energy Technology Data Exchange (ETDEWEB)

    Salzano, A.; Nocera, V. [Ospedale San Giovanni di Dio di Frattamaggiore, Servizio di Radiologia, Frattamaggiore, NA (Italy); De Rosa, A.; Vigliotti, A. [Azienda Sanitaria Locale NA1, Radiologia, Naples (Italy); Rossi, E.; Carbone, M.; Gatta, G. [Naples Univ. Federico 2., Naples (Italy). Ist. di Scienze Radiologiche; Vitale, L. [Ospedale di Sorrento, Servizio di Radiologia, Sorrento, NA (Italy)

    2000-12-01

    the extent and severity of damage, which permits to choose a conservative treatment in case of intraparenchymal hematomas and lacerocontusive foci without hemoperitoneum, which can be followed-up with physical and CT examinations. Moreover, Helical CT could provide the early diagnosis of active bleeding in the peritoneum and of focal bleeding in the liver, thus permitting prompt hepatorrraphy or targeted hepatectomy. A diaphragm injury suspected at CT should always prompt the surgeon to intervention, especially when hemothorax, lung base pneumothorax, large liver hematoma or tear of the liver dome are associated. Finally, subdiaphragmatic free gas indicates gut perforation associated with liver damage, in which case surgery is necessary too. [Italian] Le ferite penetranti del fegato sono dovute a molteplici cause, e occupano il secondo posto dopo i traumi chiusi epato-addominali. Scopo del lavoro e' di illustrare i vari quadri clinico-radiologici della nostra casistica personale, determinati da lesioni penetranti da armi da fuoco e da punta e taglio. Definire inoltre la modalita' di diagnosi, soprattutto in base ai segni TC del danno epatico e di lesioni associate, che condizionano in modo decisivo la terapia e l'approccio chirurgico o conservativo. Negli ultimi sette anni sono stati studiati retrospettivamente 31 casi (19 maschi e 12 femmine; eta' media 42 anni, compresa tra 18 e 73 anni), con lesioni penetranti del fegato, dovute prevalentemente a armi da fuoco (16 pazienti), a armi da punta e taglio (9 casi) e miscellanee in 6. L'esame TC dell'addome e' stato eseguito in emergenza e con tecnica angio-TC in tutti i pazienti. Nei casi di ferite con sospetto coinvolgimento toraco-addominale, la TC veniva iniziata dal medio-torace al fine di una valutazione accurata del diaframma, delle basi polmonari e per escludere lesioni pleuropolmonari associate. Nel 70% dei casi le ferite penetranti epatiche erano in relazione ad arma da fuoco

  3. Aortic non communicating dissections. A study with helical CT; Studio dell'ematoma intramurale aortico. Aspetti con Tomografia Computerizzata spirale

    Energy Technology Data Exchange (ETDEWEB)

    Midiri, M.; Strada, A.; Stabile Ianora, A.A.; Rotondo, A.; Angelelli, G. [Bari Univ., Bari (Italy). Dipt. di Medicina Interna e Medicina Pubblica, Sez. di Diagnostica per Immagini; Scialpi, M. [Ospedale SS. Annunziata, Taranto (Italy); D' Agostino, D.; De Luca Tupputi Schinosa, L. [Bari Univ., Bari (Italy). Dipt. Emergenze Trapianto d' Organo, Sez. di Cardiochirurgia

    2000-09-01

    confused with aortic dissection. The imaging techniques (TEE, CT, MRI) have an important role in the final diagnosis of aortic hematoma. Presently Helical CT and MR angiography are the main tools in the early diagnosis of this condition before the development of complications. In this experience helical CT, before and after the administration of contrast material, was accurate in identifying the hematoma localization and extension. [Italian] Tale studio ha lo scopo di valutare con tecnica TC spirale gli aspetti semeiologici dell'ematoma intramurale dell'aorta e sottolineare il ruolo diagnostico decisivo di tale metodica nello studio di pazienti con quadro clinico acuto sospetto per dissezione aortica. E' stato condotto uno studio retrospettivo (dal 1995 al 1999) sulle immagini di 396 pazienti che avevano eseguito un esame TC in regime d'urgenza per sospetta dissezione aortica. Solo 18 pazienti (6 femmine, 12 maschi) presentavano aspetti tomodensitometrici caratteristici per ematoma intramurale aortico. Gli esami sono stati condotti tutti con TC spirale utilizzando i seguenti parametri: spessore dello strato 10 mm, image index 10, passo della spirale 1,5 mm, algoritmo standard con un minimo di 130 kV e 125 mA. Gli esami sono stati condotti prima e dopo iniezione di 130 ml di mdc in bolo rapido e ricercando i seguenti parametri: sede ed estensione longitudinale dell'ematoma spessore e densita' della parte aortica, presenza e localizzazione delle caclificazioni intimali, regolarita' del lume vero, presenza di emomediastino e/o emotorace. In tutti i 18 pazienti (8 di tipo A e 10 di tipo B) e' stato osservato ispessimento circoscritto parietale tipicamente iperdenso nelle scansioni di base e ipodenso in quelle dopo mdc. In 14/18 pazienti l'ispessimento assumeva disposizione eccentrica, in solo 4/18 era concentrico; in tutti i casi l'ispessimento e' risultato maggiore di 4 mm. In 18/18 pazienti sono state riscontrate

  4. Arteritis with left carotid artery thrombosis produced by Salmonella enteritides. Study with CT, MR and angiography with digital subtraction. Arteritis con trombosis carotidea izquierda por Salmonella enteritidis. Estudio con TC, RM y angiografia con sustraccion digital

    Energy Technology Data Exchange (ETDEWEB)

    Iribarren Marin, M.A.; Fernandez Cruz, J.; Serrano Gotarredona, P.; Reyes Dominguez, M.J. (Hospital Universitario Virgen del Rocio, Sevilla (Spain))

    1994-01-01

    We present a case of suppurative arteritis of left common carotid artery produced by Salmonella enteritides in a 66-year-old man. We show the findings obtained by CT, MR and selective arteriography of the supra-aortic branches. We review this uncommon disorder. (Author)

  5. Aterosclerosis subclínica y perfil metabólico en mujeres asintomáticas de edad media, con TSH ≥ 2,5 uUI/mL

    Directory of Open Access Journals (Sweden)

    Rosa M. Pando-Álvarez

    2012-04-01

    Full Text Available El hipotiroidismo subclínico puede contribuir al desarrollo de patologías cardiovasculares y se ha demostrado que a partir de niveles de TSH >2,5uUI/mL se desarrolla disfunción endotelial. Objetivos: Determinar el grosor de la íntima media carotídea (GIMC, la presencia de placas en carótidas y el perfil metabólico en mujeres de edad media asintomáticas con TSH ≥2,5 uUI/mL y compararlas con aquellas con niveles <2,5 uUI/mL. Diseño: Estudio transversal y analítico. Lugar: Hospital Nacional Dos de Mayo e Instituto de Investigaciones Clínicas, Universidad Nacional Mayor de San Marcos, Lima, Perú. Participantes: Mujeres sin historia de enfermedad tiroidea, cardiovascular o diabetes. Intervenciones: En 60 mujeres sin historia de enfermedad tiroidea, cardiovascular o diabetes, con edad promedio de 53,8 ± 5,8 años, se determinó la tirotropina (TSH, colesterol total (CT, colesterol de densidad alta (HDL, triglicéridos (Tg, glucosa (G basal y a los 120 minutos (TTGO, insulina basal (Ins-B; se calculó las fracciones de colesterol de densidad baja (LDL, el nivel de insulinorresistencia (HOMA-IR, la presión arterial, perímetro de cintura abdominal, el índice de masa corporal (IMC y el GIMC mediante ecoDoppler. Principales medidas de resultados: TSH ≥2,5 uUI/mL, perfil metabólico y su relación con GIMC. Resultados: El 38,3% presentó TSH ≥2,5 y 61,7% TSH <2,5 uUI/mL. El 56% de mujeres con TSH ≥2,5 y 65% con TSH <2,5 uUI/ml fueron hipertensas, sin diferencia estadística. El perfil lipídico, G basal, Ins-B e índice HOMA-IR fueron semejantes en ambos grupos. Se observó niveles significativamente más altos del IMC, G a los 120 minutos, el GIMC en carótida izquierda y el mayor entre ambas carótidas en las mujeres con TSH ≥2,5 uUI/mL (p=0,03, p=0,01, p=0,008 y p=0,02, respectivamente. La presencia de placas en la carótida izquierda y en al menos una de las carótidas fue significativamente más frecuente entre aquellas con

  6. Prevalencia de TSH neonatal elevada y factores perinatales relacionados con asfixia Bogotá 2012

    OpenAIRE

    Sánchez Moreno, Edwin Alexander; Rojas Ávila, Camilo Eduardo

    2013-01-01

    Introducción: la asfixia perinatal es la tercera causa de muerte en menores de 5 años. Las secuelas neurológicas suponen una carga importante para las familias y los sistemas de salud (1). Los estudios que relacionan el efecto de la asfixia perinatal sobre las hormonas tiroideas son escasos. El estudio sobre predictores de asfixia es un tema de investigación permanente. El objetivo principal fue determinar la prevalencia de TSH de cordón elevada y su relación con factores perinatales asociado...

  7. Anticuerpos antitiroperoxidasa y antitransglutaminasa en familiares de primer grado de personas con diabetes tipo 1 y su relación con algunas características clínicas, bioquímicas e inmunológicas Antithyroperoxidase and antitransglutaminase antibodies in first degree relatives of type 1 diabetes persons and its relation to some clinical, biochemical and immunological features

    OpenAIRE

    Levi González Rivero; Eduardo Cabrera Rode; Silvia Elena Turcios Tristá; José Armando Galván Cabrera; Julio César Rodríguez González; Tania Espinosa Reyes; Pedro González Fernández; Manuel Vera González; Celeste Arranz Calzado; Oscar Díaz Horta

    2010-01-01

    INTRODUCCIÓN: los anticuerpos antitiroperoxidasa (AcTPO) y antitransglutaminasa (ATGt) son útiles marcadores de enfermedad tiroidea autoinmune y enfermedad celíaca, respectivamente. Su presencia en familiares de primer grado de personas con diabetes tipo 1 no se ha descrito en Cuba. OBJETIVO: determinar las frecuencias de los AcTPO y ATGt en familiares de primer grado de personas con diabetes tipo 1 y su relación con algunas características clínicas, bioquímicas e inmunológicas. MÉTODOS: en u...

  8. Tratamiento de la tiroiditis de Riedel con triamcinolona

    Directory of Open Access Journals (Sweden)

    Germán Brito Sosa

    Full Text Available Se presenta el primer paciente con una tiroiditis de Riedel que se le aplica un tratamiento alternativo con triamcinolona creado por el profesor Juan Gualberto Vivó Núñez. Es el caso de una mujer de 48 años de edad, que acude al cuerpo de guardia por aumento de volumen de la región anterior del cuello y referir ligera disfagia. Tiene antecedente inicialmente de hipertiroidismo, a los 9 años comenzó con hipotiroidismo y hace aproximadamente un año se le diagnosticó una tiroiditis de Hashimoto, con seguimiento por endocrinología. La ecografía del tiroides muestra un aumento marcado de la glándula tiroidea y las imágenes de la biopsia por aspiración con aguja fina (BAAF son compatibles con una tiroiditis de Hashimoto. Con estos resultados se decide intervenirla quirúrgicamente eliminando así los signos compresivos. La biopsia postoperatoria describe una tiroiditis de Riedel. Por el gran tamaño de los lóbulos tiroideos, se le infiltra triamcinolona 1/2 cc en cada lóbulo, una vez al mes durante cuatro meses; logrando reducir aproximadamente el 50 % de los lóbulos tiroideos. Por lo que se puede apreciar los resultados obtenidos con el uso de la triamcinolona.

  9. Screenings of lung cancer with low dose spiral CT: results of a three year pilot study and design of the randomised controlled trial Italung-CT; Screening della neoplasia polmonare con TC spirale a bassa dose: risultati di uno studio pilota triennale e disegno dello studio clinico randomizzato Italung-CT

    Energy Technology Data Exchange (ETDEWEB)

    Picozzi, Giulia [Firenze Univ., Firenze (Italy). Radiodiagnostica I-Dipartimento di Fisiopatologia Clinica; Paci, Enrico [Azienda Ospedaliera Universitaria di Careggi, Firenze (Italy). Unita' di Epidemiologia Clinica e Descrittiva Centro per lo Studio e la Prevenzione Oncologica; Lopes Pegna, Andrea [Azienda Ospedaliera Universitaria di Careggi, Firenze (Italy). U.O. Pneumologia] [and others

    2005-02-01

    Purpose: To report the results of a three-year observational pilot study of lung cancer screening with low dose computed tomography (CT) and to present the study design of a randomised clinical trial named as Italung CT. Materials and methods: Sixty (47 males and 13 females, mean age 64{+-}4.5 years) heavy smokers (at least 20 packs-year) underwent three low-dose spiral CT screening tests one year apart on a single slice or multislice CT scanner. Indeterminate nodules were managed according to the recommendations of the Early Lung Cancer Action Project. Results: Indeterminate nodules were observed in 33 (55%) of the subjects (60% at the baseline screening test, 24% at the first annual test and 16% at the second annual test). The size of the largest indeterminate nodule was <5mm in diameter in 20 subjects. 10 of whom showed the nodule at the baseline test. Forty-five subjects (75%) completed the first annual test and 42 (70%) the second annual test. One (1.6%) prevalent lung cancer (adenosquamous carcinoma) and one (2.2%) incident lung cancer (small cell cancer at the first annual examination) were observed, as well as pulmonary localisation of Hodgkin's lymphoma (at the second annual test). In addition, one subject underwent lung surgery for a chondromatous hamartoma. Conclusions: The results of the pilot study are substantially in line with those of other observational studies of greater sample size. This justifies optimism about the reliability of the results in the screened arm of the Italung Ct trial which hast just began. [Italian] Scopo: Riportare i risultati di uno studio pilota osservazionale di screening della neoplasia polmonare con TC a bassa dose della durata di tre anni e presentare il disegno dello studio clinico randomizzato Italung-CT. Materiale e metodi: Sessanta (47 uomini e 13 donne, eta' media 64{+-}4,5 anni) forti fumatori (almeno 20 pacchetti/anno) sono stati sottoposti ad un esame basale e a due controlli annuali con TC single o

  10. Evaluation of bone metastases with {sup 18} F- Sodium fluoride PET/CT; initial experience; Evaluacion de metastasis oseas con {sup 18} F-Fluoruro de sodio PET/CT; experiencia inicial

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez C, N.; Serna M, J.A.; Quiroz C, O.; Quinzanos, F.; Valenzuela, J.; Ramirez A, J.L. [Hospital Angeles del Pedregal, Mexico D.F. (Mexico)

    2007-07-01

    The study of NaF-18 PET/CT is the modality with bigger sensitivity and specificity for the bony metastases detection. This additional value of the NaF-18 PET/CT can have a beneficent impact in the clinical handling of the patients with prostate cancer with high risk. (Author)

  11. Relación entre la pureza radioquímica del 123i-ioflupano y la captación extracraneal (tiroidea y parotídea

    Directory of Open Access Journals (Sweden)

    Lucía Díaz Platas

    2015-12-01

    Full Text Available Objetivo: Estudiar el efecto de la pureza radioquímica (PR del 123I-Ioflupano, utilizado para realizar SPECT cerebral de transportadores de dopamina, sobre las imágenes obtenidas y evaluar la posible influencia de la extravasación durante su administración y del grado de afectación del paciente por el síndrome parkinsoniano sobre los resultados. Material y métodos: Se realizó un estudio prospectivo en 39 pacientes. La PR del 123I-Ioflupano se determinó mediante cromatografía en capa fina. Se delimitaron las regiones de interés (ROI en zona aproximada de cerebro, parótidas y región cervical, obteniéndose la media de cuentas en cada región y las ratios de actividad tiroides/cerebro (RTC y parótidas/cerebro (RPC. Se propuso un modelo de regresión lineal múltiple con predictores cuantitativos y categóricos. Resultados: El modelo mostró correlación entre la PR y la RTC modificada por la presencia de extravasación, fue estadísticamente significativo (p<0,001 y predijo el 42,31% de la variabilidad de la RTC. La correlación entre PR y RPC no se modificó por ninguna de las variables propuestas. El modelo fue estadísticamente significativo (p<0,0176 y predijo el 12,3% de la variabilidad del RPC. Conclusiones: La capacidad predictiva del modelo para explicar la variabilidad de la RTC es aceptable y explica la repercusión negativa de la extravasación. Sin embargo, la capacidad para explicar la variabilidad de la RPC es baja y debe ser atribuida a variables no estudiadas. Una PR baja y la extravasación durante la administración del radiofármaco se traduce en mayor actividad extracraneal e implica peor calidad de imagen y mayor irradiación tiroidea.

  12. Modulación de la neuritogénesis y de la conducta por hormonas tiroideas en ratas adultas

    OpenAIRE

    Montero-Pedrazuela, Ana

    2006-01-01

    Las alteraciones hormonales están implicadas en muchas patologías asociadas con la edad como las enfermedades neurodegenerativas y los trastornos psiquiátricos. En el adulto, las alteraciones del estado tiroideo cursan con frecuencia con cambios psicológicos y trastornos del estado del ánimo como la depresión. Se ha demostrado que en los mamíferos adultos, incluido el hombre, continúa generándose neuronas a partir de células madre en el giro dentado GD, de la formación del hipocampo. Las neur...

  13. CT-Urography; Urografia CT

    Energy Technology Data Exchange (ETDEWEB)

    Dalla Palma, Ludovico; Grotto, Maurizio [Trieste Univ., Trieste (Italy). Dipartimento di scienze cliniche, morfologiche e tecnologiche, UCO di radiologia; Morra, Aldo [CRO, Aviano (Italy). Reparto di radiologia

    2005-09-15

    In this paper we present an overview of CT-Urography. With the advent of multislice CT scanners and the evolution of image processing methods this technique now affords optimal urographic images comparable to those obtained with conventional techniques. We describe the acquisition techniques and protocols used by the various authors. Effective radiation dose has conditioned the use of CT-Urography so that the tendency today is to reduce the number of scans by performing, after the non enhanced scan, a single contrast-enhanced scan comprising both the nephrographic and urographic phase. With the use of multislice CT the quality of the urogram improves with the number of slices. We illustrate a variety of processing techniques, multiplanar reconstruction (MPR), maximum (MIP) and average intensity projection (AIP) and volume rendering (VR) and present a series of upper urinary tract tumours testifying to the superiority of the AIP technique over MIP. We then review the results of comparative studies of CT-Urography with conventional urography in upper urinary tract diagnostics. Finally, we describe the advantages and limitations of CT-Urography. [Italian] Gli Autori presentano una panoramica sulla Urografia TC (Uro TC). L'avvento della TC multistrato e l'evoluzione delle tecniche di elaborazione consentono di ottenere dei quadri urografici ottimali comparativi con quelli convenzionali. Vengono ricordate le varie tecniche di acquisizione e i protocolli usati dai vari Autori. La dose effettiva di radiazioni ha rappresentato uno dei fattori condizionanti per cui oggi prevale l'orientamento di ridurre il numero di scansioni, considerando dopo la scansione senza mezzo di contrasto un'unica scansione contrasto grafica comprendente sia la fase nefrografica che quella urografica. Con l'uso della TC multistrato la qualita dell'urogramma migliora con l'aumento del numero degli strati. Vengono descritte le varie tecniche di elaborazione, la

  14. The role of 3D Helical CT in the reconstructive treatment of maxillofacial cancers; Tomografia Computerizzata spirale con elaborazioni tridimensionali di superficie nel trattamento ricostruttivo dei tumori maligni del massiccio facciale

    Energy Technology Data Exchange (ETDEWEB)

    De Rosa, V.; Ziviello, M. [Ospedale Cardarelli, Servizio di Radiodiagnostica, Naples (Italy); Ionna, F.; Mozzillo, N. [Ospedale Cardarelli, Div. di Chirurgia B, Ist. Nazionale Tumori Fondazione G. Pascale, Naples (Italy); Parascandolo, S. [Ospedale Cardarelli, Div. di Chirurgia Maxillo-Facciale, Naples (Italy)

    2000-12-01

    -ferrous metal of low atomic number that allows very clear CT and MR images to be obtained. Further Ti features are strength, biocompatibility and easy handling. 3D Helical CT scan has proven to be the most complete and accurate imaging technique for reconstructive plastic surgery with alloplastic material in advanced maxillofacial cancer, also considering the anatomic and functional complexity of his area. The prospect is provided to identify virtual 3D presurgical ablation planes. These may allow the surgeon to improve plastic reconstruction and shorten intervention time. [Italian] Scopo di questo articolo e' quello di analizzare il ruolo della TC spirale e i vantaggi delle ricostruzioni tridimensionali di superficie nella pianificazione e controllo degli interventi di chirurgia ricostruttiva plastica con materiale alloplastico nelle neoplasie maligne del massiccio facciale. Sono state eseguite dal 1996 al 1999 11 ricostruzioni plastiche dell'osso mascellare per neoplasie osteodestruenti il massiccio facciale utilizzando materiale alloplastico. Per la ricostruzione della parete anteriore dell'osso mascellare e del pavimento orbitario e' stata utlizzata una rete di titanio al 100% modulabile. Applicato nel cavo residuo dell'osso un otturatore siliconato sormontante una protesi acrilica con arcata dentaria per la ricostruzione del palato. In due casi utilizzato pericardio bovino modulato sulla soluzione di continuo. Tutti i pazienti sono stati studiati con TC spirale sia nella fase preoperatoria che entro il sesto mese dall'intervento chirurgico. Elaborate ricostruzioni tridimensionali della superficie (shaed surface display-SSD) con valori soglia compresi tra 425 e 630 UH ma con intervallo piu' stretto di finestra sui valori UH all'interfaccia osso/rete di titanio nei controlli del modellamento protesico. L'elaborazione tridimensionale della superificie sui dati ottenuti con acquisizione volumetrica ha fornito in tutti casi la fedele

  15. CT Assessment of the axial deviation of the femoral and tibial prosthetic components in total knee arthroplasty; Valutazione con Tomografia Computerizzata della rotazione delle componenti femorale e tibiale nell'artroprotesi totale del ginocchio

    Energy Technology Data Exchange (ETDEWEB)

    Rimondi, E.; Molinari, M.; Moio, A.; Busacca, M. [Istituto Ortopedico Rizzoli, Bologna (Italy). Servizio di Diagnostica per Immagini; Trentani, F.; Trentani, P.; Tigani, D. [Istituto Ortopedico Rizzoli, Bologna (Italy). VII Div.; Nigrosoli, M. [Istituto Ortopedico Rizzoli, Bologna (Italy). IV Div.

    2000-06-01

    components on frontal and axial planes. It was measured the orientation of the prosthetic components introducing a CT procedure which modifies the uniarticular with four scans introduced by Berger. The new method uses Berger's parameters and the CT study of both joints by means of Helical CT. With a single examination lasting less than 4 minutes and with the patient in a more confortable position, it can be obtained: (1) comparative and simultaneous assessment of the contralateral joint; (2) several scans to better define Berger's parameters and to accomplish measurement of the rotational deviation with higher precision and markedly decreasing the error margin. The analysis of the results confirms the international literature findings and especially the fundamental importance in positioning both prosthetic components within normal values, as emphasized by the relationship between the clinical symptoms and the rotational degree of the femoral and tibial prosthetic components. [Italian] Scopo di questo lavoro e' valutare mediante TC la rotazione delle componenti protesiche femorale e tibiale nella protesi del ginocchio. Da gennaio a luglio 1999 sono stati esaminati 17 pazienti, 10 maschi e 7 femmine, eta' media 66 anni (deviazione standard plus minus 4) operati di protesi totale del ginocchio. Sono stati esclusi tutti i soggetti con mobilizzazione delle componenti protesiche e con deviazioni gravi (uguali o superiore a 7) nel varismo o nel valgismo. Ogni paziente e' stato studiato con radiogrammi del ginocchio nell'ortostasi in due proiezioni completate da assiali della rotula e mediante TC. Rispetto alla metodica descritta da Berger la TC e' stata efettuata comparativamente con arti inferiori estesi scansioni perpendicolari all'asse meccanico del ginocchio, condotte dalla regione sovracondiloidea femorale al piano passante al di sotto delle estremita' distale della componente protesica tibiale. Su piani di scansione predefiniti

  16. Animales de laboratorio en la endocrinología: Biomodelos de las enfermedades tiroideas Laboratory animals in endocrinology: Biomodels in thyroid diseases

    Directory of Open Access Journals (Sweden)

    Beatriz Hugues Hernandorena

    2002-12-01

    Full Text Available Los modelos animales que se utilizan en las investigaciones sobre el tiroides ayudan al estudio de los mecanismos patogénicos que conducen a la presentación de los desórdenes de esta glándula, dan la oportunidad de explorar nuevos tratamientos y formas de prevención. El objetivo de este trabajo fue brindar una información detallada sobre los biomodelos de enfermedades que afectan el tiroides, a partir de una revisión bibliográfica sobre el tema, que comprenda los que se obtienen de forma espontánea o inducida, exponiendo los factores ambientales que influyen sobre ellos. En conclusión, se expresaron las ventajas que ofrecen estos biomodelos para los investigadores que se dedican a estudiar esta rama de la endocrinología, aunque no constituyan un reflejo exacto de lo que ocurre en el hombre y no necesariamente reúnan todas las características distintivas de la patología tiroidea en cuestión.The animal models used in the investigations on thyroid help to study the pathogenic mechanisms leading to the appearance of disorders of this gland, and give the opportunity to find new treatments and ways of prevention. The objective of this paper was to provide a detailed information on the biomodels of diseases affecting the thyroid, starting from a bibliographic review on this topic, including those obtained in a spontaneous or induced way, and explaining the environmental factors influencing them. To conclude, the advantages of these biomodels for the researchers devoted to study this branch of endocrinology were stressed, although they are not an exact reflex of what happens in man and they do not necessarily have all the distinctive features of thyroid pathology.

  17. Suburban amoebiasis. CT and US findings and percutaneous treatment of amoebic liver abscess; Amebiasi sub-urbana: aspetti diagnostici con tomografia computerizzata ed ecografia e trattamento percutaneo degli ascessi amebici del fegato

    Energy Technology Data Exchange (ETDEWEB)

    Salzano, A.; De Rosa, A. [Ospedale Loreto Mare, Naples (Italy). Servizio di Radiologia; Rossi, E.; Carbone, M.; Mondillo, F. [Naples Univ. II, Naples (Italy).Dipt. di Scienze Biomorfologiche e Funzionali, Servizio di Diagnostica per Immagini; Tuccillo, M. [Azienda Ospedaliera di Rilievo Nazionale A. Cardarelli, Naples (Italy). Servizio di Radiologia; Capuano, N. [Ospedale Loreto Mare, Naples (Italy). Div. di Chirurgia; Nunziata, A. [Naples Univ. II, Naples (Italy). Ist. di Radiologia

    2000-03-01

    The study reports ultrasonography and computerise tomography findings in 16 patients with amoebic abscesses, 12 of whom lived in a temperate peripheral area north-east of Naples (Italy). All patients have a clinical-diagnostic condition called sub-urban amoebiasis. The personal experience with the US guided therapeutic drainage of amoebic abscess with repeated cavity washing, which is important for positive parasitology. Combined US and CT assessment facilitated the diagnosis of amoebiasis and its differentiation from pyogenic abscess and hepatoma. [Italian] La colonizzazione epatica rappresenta la localizzazione piu' comune dell'amebiasi extraintestinale e gli ascessi epatici ne costituiscono la manifestazione piu' frequente sviluppandosi nel 3-9 % dei pazienti affetti da infezione parassitaria. Diversi studi confermano che la terapia medica dell'amebiasi risulta piu' efficace quando viene associato il drenaggio percutaneo degli ascessi epatici con piu' rapida guarigione clinica e risposta favorevole dell'organismo. Scopo del presente lavoro e' di descrivere gli aspetti ecografici e di tomografia computerizzata degli ascessi amebici in un gruppo di 16 pazienti, 12 dei quali residenti in zona temperata e periferica di una vasta area a nord-est di Napoli presentandosi con caratteristico e raro quadro clinico-diagnostico definito amebiasi sub-urbana. Si discute infine l'esperienza personale del drenaggio terapeutico sotto guida ecografica dell'ascesso con tecnica del lavaggio ripetuto dalla cavita', importante ai fini della positivita' dell'esame. L'associazione dei reperti tipici ecografici e TC ha consentito la diagnosi agevole dell'amebiasi differenziandola dall'ascesso piogenico e dall'epatoma.

  18. Cardiopatía isquémica: evaluación anatomofuncional en una sola exploración con PET-CT multicorte

    OpenAIRE

    Alexánderson,Erick; Cruz,Patricio; Sierra,Carlos; Talayero,José Antonio; Meave,Aloha

    2006-01-01

    El abordaje integral del paciente con cardiopatía isquémica requiere de una evaluación precisa anatomo-funcional del miocardio así como de las arterias coronarias. Actualmente los avances tecnológicos permiten la valoración de la fisiología cardiovascular mediante Tomografía por Emisión de Positrones (PET). El PET es una herramienta confiable para el estudio del metabolismo cardíaco, la perfusión miocárdica, la función ventricular, el flujo coronario, la viabilidad miocárdica y la función end...

  19. Punción aspiración con aguja fina de nódulos tiroideos

    Directory of Open Access Journals (Sweden)

    Iván Pimienta Concepción

    2017-06-01

    Full Text Available La punción aspirativa con aguja fina es una técnica muy habitual en las últimas décadas, que interpretada por un citólogo experto proporciona una información muy valiosa, se basa en un método simple, mínimamente invasivo y preciso para diagnosticar masas superficiales tales como los nódulos tiroideos; definidos por la Asociación Tiroidea Americana como discretas lesiones dentro de la glándula tiroidea imagenológicamente distintas del parénquima tiroideo. En los nódulos fríos indica si la citología es benigna, dudosa o maligna, con escasas probabilidades de error. En los carcinomas papilares su fiabilidad se acerca al 100% e igualmente en los carcinomas anaplásicos y carcinomas medulares; no así en los adenomas foliculares que son indiferenciables de los carcinomas, por lo cual el diagnóstico de proliferación folicular no es definitivo hasta después de la cirugía cuando esté el informe histopatológico de la biopsia por parafina, que sí es concluyente. En esta revisión bibliográfica se abordan los referentes teóricos más actuales sobre la importancia de la punción aspiración con aguja fina en el estudio de las lesiones nodulares de la glándula tiroides, tanto a nivel nacional como internacional, si se tiene en cuenta la tendencia al incremento del cáncer de tiroides en el Ecuador.

  20. Análisis de perforantes de la epigástrica inferior profunda con Angio TC 3D, Eco Doppler color y Doppler simple de ultrasonidos en colgajo DIEP: resultados preliminares Analysis of deep inferior epigastric perforating vessels with 3D CT angiography, color Doppler ultrasonography and Doppler in diep flaps: preliminary results

    Directory of Open Access Journals (Sweden)

    J. Castro García

    2008-09-01

    Full Text Available Nuestro objetivo es la validación de la Angio TC tridimensional como herramienta de planificación de los colgajos DIEP, comparándolo con el Doppler de ultrasonidos (US y eco Doppler color. Entre enero de 2006 y marzo de 2007 se realiza en 11 pacientes (13 DIEP un estudio comparativo prospectivo entre el Doppler de US, eco Doppler color y Angio TC con reconstrucción tridimensional, utilizando como dato de referencia los hallazgos intraoperatorios. En dicho proceso se localiza la mejor perforante que pueda servir como pedículo al colgajo DIEP en función de su localización, calibre, trayecto y relaciones anatómicas con respecto al músculo. La Angio TC con reconstrucción tridimensional, demuestra una especificidad del 100% (IC 95% 75.3-100 lo que le convierte en una prueba con un alto valor predictivo positivo y una excelente herramienta en la planificación de los colgajos de perforantes. El eco Doppler color determinó, que tan sólo en un 46,1% (IC 95% 19,2-74,9 de los pacientes, la perforante seleccionada por la prueba de forma preoperatoria, coincidía con la perforante elegida en quirófano. Con el Doppler de US, en un 30,8 % (IC 95% 9,1-61,4 de los colgajos estudiados, coincidía la mejor perforante escogida de forma preoperatoria, con los hallazgos obtenidos tras la disección del colgajo. En el presente estudio, la Angio TC tridimensional se ha mostrado como una técnica con una gran especificidad que proporciona valiosa información, sólo comparable con la disección anatómica y por delante de pruebas como el Doppler de ultrasonidos y el eco Doppler color.The aim of this report, is to validate the Angio-CT technique with three-dimentional reconstruction as a preoperative planning tool, after comparison with Doppler ultrasound and color- Duplex. Between january 2006 and march 2007, we studied 11 consecutive patients (13 DIEP in whom a prospective comparative followed up was performed comparing, the findings observed using

  1. Características clínicas, perfil hormonal y marcadores de autoinmunidad de pacientes con enfermedad de Graves.

    Directory of Open Access Journals (Sweden)

    Deysy Cieza Diaz

    2008-10-01

    Full Text Available Objetivo: Describir las características clínicas, el perfil hormonal y los marcadores de autoinmunidad de pacientes con enfermedad de Graves (EG, atendidos en el servicio de endocrinología de un hospital general. Material y métodos: Estudio descriptivo, retrospectivo de pacientes con diagnóstico de EG atendidos en el servicio de endocrinología del Hospital Nacional Cayetano Heredia durante el año 2005. Los pacientes fueron identificados utilizando el Registro Diario de Atención y Otras Actividades del consultorio externo. Para el análisis estadístico se utilizó el programa SPSS versión 12,0. Resultados: Se revisaron 111 historias clínicas. La edad promedio fue de 40,6 ± 14 años. El 71,2% eran mujeres. El 20,7% tenía antecedente familiar de otra enfermedad autoinmune. El tiempo de enfermedad promedio antes de la consulta fue 18,9 ± 30,4 meses. Los síntomas más frecuentes fueron: tremor, piel delgada, palpitaciones y baja de peso. El peso promedio de la glándula tiroides estimado por palpación fue 69 ± 27,5 gr, 38,7% presentaba exoftalmos y 18,9% mixedema pretibial. El perfil hormonal mostró TSH suprimida, T4 libre y T3 total elevados. El 86,7% de los casos tenía autoanticuerpos anti-peroxidasa tiroidea (anti-TPO positivo. En 95,5% el tratamiento incluyó el uso de tionamidas. El análisis bivariado mostró que las mujeres tuvieron antecedente familiar de enfermedad tiroidea autoinmune en mayor frecuencia que los varones (27,8 vs. 9,4% (p=0,04. Conclusión: La población estudiada con EG fueron con mayor frecuencia mujeres entre la tercera y sexta década de la vida. El peso estimado de la glándula tiroides fue tres veces lo normal, con alta frecuencia de oftalmopatía y mixedema. La mayoría tiene marcadores humorales de autoinmunidad y el tratamiento inicial se basa en el uso de tionamidas. (Rev Med Hered 2008; 19:152-157.

  2. Measurement of radiation exposure in attendants of thyroid cancer patients treated with {sup 131}I; Medicion de la exposicion a la radiacion en familiares de pacientes tratados con {sup 131}I por patologia tiroidea

    Energy Technology Data Exchange (ETDEWEB)

    Ramirez G, Y. T.

    2012-07-01

    Patients treated with {sup 131}I for differentiated thyroid cancer present radiological risk to relatives, occupational exposed workers and general public. Recently, the IAEA issued document K-9010241, 2010, which recommends that patient discharge from hospital must be based on the particular status of each patient, unlike the current criteria applied in Mexico based on the exposure rate at a 1 m distance. In this work thermoluminescent dosimeters were used during a 15 day period to measure the effective dose received by 40 family caregivers of patients treated with {sup 131}I, after their release from hospital 'Instituto Nacional de Cancerologia', Mexico. Relatives were classified in two groups, ambulatory (outpatients) and hospitalized (inpatients), according to the release mode of the patient. Measurements were performed for 20 family caregivers in each group. The effective dose received by all family members of outpatient and inpatient groups was found to be smaller that 5 mSv. In addition, 70 and 90% of inpatient and outpatient groups, respectively, received doses lower than 1 mSv. These data provide information which allow to give recommendations of possible modifications to current regulations in Mexico regarding discharge from hospital of patients treated with radiopharmaceuticals. (Author)

  3. Calidad del hueso en mujeres de edad mediana con hipertiroidismo subclínico farmacológico Bone quality in middle age women presenting with pharmacological subclinical hyperthyroidism

    Directory of Open Access Journals (Sweden)

    Daysi Antonia Navarro Despaigne

    2010-12-01

    Full Text Available INTRODUCCIÓN: las hormonas tiroideas en niveles suprafisiológicos y el hipoestrinismo son factores que pueden inducir baja masa ósea. OBJETIVO: determinar la calidad de hueso en mujeres en etapa de climaterio que reciben tratamiento con dosis supresivas con hormonas tiroideas. MÉTODOS: estudio de casos y controles realizado entre marzo de 2006 y diciembre de 2008. Incluye 113 mujeres con edades entre 40-59 años que asisten a la consulta externa de los Institutos Nacionales de Endocrinología y Oncología y Radiobiología, de ellas 43 recibían tratamiento con hormonas tiroideas (grupo estudio y 70 no (grupo control. Mediante absorciometría dual de rayos x de columna lumbar y antebrazo, se precisó la densidad mineral ósea en g/cm² y el puntaje T, a fin de identificar la presencia de osteopenia o baja masa ósea y osteoporosis. RESULTADOS: la densidad mineral ósea de columna lumbar y antebrazo fue de 0,9229 vs. 0,8856 (p>0,05 y de 0,536 vs. 0,6226 (p0,05 entre grupos. CONCLUSIONES: el uso de hormonas tiroideas en dosis supresiva disminuyó el contenido mineral óseo del antebrazo, sin incrementar el riesgo de fractura.INTRODUCTION: thyroid hormones at supraphysiological levels and the hypothyroidism are factors that may to induce a low bone mass. OBJETIVE: to determine the bone quality in climacteric women under treatment with suppressive doses with thyroid hormones. METHODS: the case-control study conducted between March, 2006 and December, 2008 includes 113 women aged 40-59 seen in external consultation of National Institutes of Endocrinology, Oncology and Radiobiology where 43 of them were under treatment with thyroid hormones (study group and 70 not (control group. Using dual beam absorptiometry of lumbar spine and the forearm, it was possible to determine the bone mineral density in g/cm² and the T pointing to identify the presence of osteopenia or a low bone mass and osteoporosis. RESULTS: the bone mineral density of lumbar spine

  4. Caracterización clínica y funcional en pacientes con diagnóstico inicial de tiroiditis de Hashimoto en el año 2007. Clinical and functional characterization in patients with initial diagnosis of Hashimoto's thyroiditis in 2007.

    Directory of Open Access Journals (Sweden)

    Marelys Yanes Quesada

    2008-08-01

    Full Text Available INTRODUCCIÓN: la tiroiditis de Hashimoto constituye una afección tiroidea autoinmune de lenta evolución, y es la primera causa de hipotiroidismo con bocio en zonas con adecuada ingesta de yodo. OBJETIVO: identificar las características clínicas (edad, sexo, antecedentes patológicos familiares de enfermedad tiroidea y presencia de bocio, así como el estado de función tiroideo en el momento del diagnóstico de la tiroiditis de Hashimoto. MÉTODOS: se realizó un estudio descriptivo y transversal con 41 pacientes con diagnóstico inicial de tiroiditis de Hashimoto durante el año 2007, a los cuales se les llenó un modelo de encuesta, y se les hizo examen físico del tiroides, así como dosificación de hormona estimulante del tiroides y tiroxina total. Los datos se analizaron utilizando el método porcentual y se expusieron en tablas. RESULTADOS: se obtuvo un predominio del sexo femenino con un 78 %, y según edad y sexo el grupo más frecuente ocurrió en las mujeres de 50 a 59 años con un 29,26 %. El 60,97 de los pacientes presentó antecedentes patológicos familiares de enfermedad tiroidea. Todos los pacientes presentaron bocio, y fue el más frecuente el grado 2, con un 60,97 %. El 58,53 de los pacientes estaba funcionalmente eutiroideo. CONCLUSIONES: la tiroiditis de Hashimoto fue más frecuente en el sexo femenino y en la quinta década de la vida, la presencia de antecedentes patológicos personales fue muy frecuente, y todos los pacientes presentaron bocio en el momento del diagnóstico, más frecuente de grado 2. La mayoría de los casos tuvo una función tiroidea normal.INTRODUCTION: Hashimoto's thyroiditis is an autoimmune thyroid affection of slow evolution and it is the first cause of hypothyroidism with goiter in zones with an adequate ingestion of iodine. OBJECTIVE: to identify the clinical characteristics (age, sex, family pathological history of thyroid disease and presence of goiter, as well as the state of thyroid

  5. CtOS Enabler

    OpenAIRE

    Crespo Cepeda, Rodrigo; El Yamri El Khatibi, Meriem; Carrera García, Juan Manuel

    2015-01-01

    Las Smart Cities son, indudablemente, el futuro próximo de la tecnología al que nos acercamos cada día, lo que se puede observar en la abundancia de dispositivos móviles entre la población, que informatizan la vida cotidiana mediante el uso de la geolocalización y la información. Pretendemos unir estos dos ámbitos con CtOS Enabler para crear un estándar de uso que englobe todos los sistemas de Smart Cities y facilite a los desarrolladores de dicho software la creación de nuevas herramientas. ...

  6. CT pelvimetry

    International Nuclear Information System (INIS)

    Vicens, J.L.; Charles, G.; Le Berre, J.; Flageat, J.

    1989-01-01

    Pelvimetry aims at providing the obstetrician with information on the size and morphology of the female pelvis, thus enabling him to assess the obstetrical prognosis as accurately as possible. Computed tomography (CT) has several advantages, in particular the lower mother and fetus radiation dose. After a brief description of obstetrical anatomy, the usual CT exploration method is presented and its results are considered in terms of measurements, indices and morphological findings. If performed with a very strict exploration procedure, CT pelvimetry is a very reliable, fact and comfortable method of examination. All these advantages, combined with the minimized patient dose, should lead to an increasingly widespread use of this technique [fr

  7. CT Scan

    Science.gov (United States)

    ... disease, lung nodules and liver masses Monitor the effectiveness of certain treatments, such as cancer treatment Detect ... scan done in a hospital or an outpatient facility. CT scans are painless and, with newer machines, ...

  8. Thoracic CT

    Science.gov (United States)

    ... through a vein (IV) in your hand or forearm. It may be given through the rectum using ... CT scan Vertebra, thoracic (mid back) Normal lung anatomy Thoracic organs References Gotway MB, Panse PM, Gruden ...

  9. CT Enterography

    Science.gov (United States)

    ... a CT scan can be reformatted in multiple planes, and can even generate three-dimensional images. These ... other medical conditions, and if you have a history of heart disease, asthma, diabetes, kidney disease or ...

  10. Anticuerpos antitiroperoxidasa y antitransglutaminasa en familiares de primer grado de personas con diabetes tipo 1 y su relación con algunas características clínicas, bioquímicas e inmunológicas Antithyroperoxidase and antitransglutaminase antibodies in first degree relatives of type 1 diabetes persons and its relation to some clinical, biochemical and immunological features

    Directory of Open Access Journals (Sweden)

    Levi González Rivero

    2010-08-01

    Full Text Available INTRODUCCIÓN: los anticuerpos antitiroperoxidasa (AcTPO y antitransglutaminasa (ATGt son útiles marcadores de enfermedad tiroidea autoinmune y enfermedad celíaca, respectivamente. Su presencia en familiares de primer grado de personas con diabetes tipo 1 no se ha descrito en Cuba. OBJETIVO: determinar las frecuencias de los AcTPO y ATGt en familiares de primer grado de personas con diabetes tipo 1 y su relación con algunas características clínicas, bioquímicas e inmunológicas. MÉTODOS: en un grupo de 285 sujetos se realizó la medición del AcTPO y en 262 individuos la de ATGt. Se incluyeron casos entre los 2 y 65 años de edad. Se registraron datos sobre edad, sexo, color de la piel, antecedentes personales, historia familiar de obesidad, diabetes tipo 2, enfermedad tiroidea y enfermedad celíaca. Se interrogaron síntomas y exploraron signos clínicos de enfermedad celíaca y enfermedad tiroidea autoinmune. Se determinó glucemia, insulinemia, AcTPO, ATGt y autoanticuerpos asociados a diabetes tipo 1 (AGAD y AIA-2, así como la resistencia a la insulina mediante el índice HOMA-IR. RESULTADOS: las frecuencias de AcTPO y ATGt positivos fueron 5,3 y 1,9 %, respectivamente. La historia familiar de enfermedad tiroidea, el temblor muscular fino y el exoftalmos se relacionaron con la presencia de AcTPO. Malabsorción intestinal, diarrea persistente, dolor abdominal recurrente y antecedente personal de hepatopatía se asociaron con la presencia de ATGt. Se encontró asociación entre los ATGt y el AIA-2. La resistencia a la insulina no se asoció con la presencia de AcTPO ni de ATGt. CONCLUSIONES: en los familiares de primer grado de personas con diabetes tipo 1 las frecuencias de AcTPO y ATGt son bajas. Algunos antecedentes, síntomas y signos vinculados con enfermedad celíaca y enfermedad tiroidea autoinmune pueden ser indicadores prácticos previos a la indicación de estos autoanticuerpos.INTRODUCTION: the antithyroperoxidase (TPOAb and

  11. First results of dose to patient in CT extracted with an automatic registration system; Primeros resultados de dosis a paciente en TC extraidas con un sistema automatico de registro

    Energy Technology Data Exchange (ETDEWEB)

    Minambres Moro, A.; Fernandez Leton, P.; Garcia Ruiz-Zorilla, J.; Perez Moreno, J. M.; Zucca Aparicio, D.

    2013-07-01

    Radiation protection of the patient in computed tomography (CT) is a priority for several reasons: the dose received during a scan is relatively high, is the diagnostic mode with greater contribution to dose to patient collective and the frequency of completion of TC is increasing rapidly the past few years. On the other hand, are currently beginning to commercially offer automated registration of dose to patient receiving dosimetric parameters of all scans performed on the equipment connected to the system. In this communication the first results are presented from two TC connected to an automatic system of this kind recently installed at our Center. (Author)

  12. Tiroiditis autoinmune inducida por interferón en pacientes con infección por virus de la hepatitis C. Interferon-induced autoimmune thyroiditis in a patient with hepatitis C virus infection

    Directory of Open Access Journals (Sweden)

    José L. Pinto

    2011-06-01

    Full Text Available Se reporta el caso de un varón de 43 años de edad, sin antecedentes patológicos de importancia, que acudió por elevación asintomática de la alanino aminotransferasa (ALT. El paciente negó ser bebedor crónico de alcohol. Se hizo el diagnóstico serológico de infección activa por hepatitis C y la biopsia de hígado reveló inflamación crónica activa. Con estos resultados, se inició tratamiento con interferón-alfa y ribavirina. Durante el tratamiento de 48 semanas, el paciente presentó anticuerpos antitiroideos positivos con variaciones en sus niveles de tirotropina (TSH y hormonas tiroideas. En el seguimiento postratamiento, el paciente continuó con hipertiroidismo por enfermedad de Graves. La tiroiditis autoinmune es una complicación frecuente del uso de interferón en pacientes con hepatitis C. En algunos casos se presenta como hipertiroidismo por enfermedad de Graves. Se debe evaluar la función tiroidea y los anticuerpos antitiroideos antes y durante el tratamiento con interferón.A 43 year old man presented with asymptomatic elevation of alanine aminotransferase (ALT and no relevant past history. The patient denied being a chronic alcohol drinker. Work-up revealed an active hepatitis C, and liver biopsy showed active inflammation. Treatment was started with interferon-alfa and ribavirin. During the 48 weeks of treatment, the patient developed positive thyroid antibodies with varying level of thyrotropin (TSH and thyroid hormones. At follow-up after treatment, the patient continued with hyperthyroidism due to Graves’ disease. Autoimmune thyroiditis is a common complication of using interferon in patients with hepatitis C. In some cases, it is presented as hyperthyroidism because of Graves’ disease. Thyroid function and thyroid antibodies should be evaluated before and during treatment with interferon.

  13. Computed Tomography (CT) -- Sinuses

    Medline Plus

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

  14. The paediatric suprasellar cistern as an important CT review area

    African Journals Online (AJOL)

    Kurt

    ful review of images by the radiologist is necessary to make accurate ... 1. Normal suprasellar cistern on con- trast-enhanced CT showing the char- acteristic ... Red Cross Children's Hospital .... diabetes insipidus preceding typical manifesta-.

  15. CT cystography

    International Nuclear Information System (INIS)

    Tsili, A.

    2012-01-01

    Full text: Cancer of the urinary bladder is one of the commonest urothelial neoplasms. Conventional cystoscopy remains the mainstay in the diagnosis of urinary bladder carcinomas. But it is an invasive and uncomfortable procedure, associated with complications. Computed tomographic (CT) virtual cystoscopy has been proposed as an alternative imaging modality with potential advantages in the detection of urinary bladder neoplasms and good patient acceptance. It is a minimally invasive technique, allowing imaging of the urinary bladder in multiple planes and a 360 0 view. CT cystoscopy provides information about the location, size and morphologic features of urinary bladder lesions, indicating appropriate areas for biopsy. It can be performed in cases in which conventional cystoscopy is not feasible, such as in the presence of urethral strictures, marked prostatic hypertrophy or active bleeding, and in cases in which cystoscopic findings are inconclusive. The technique can be used to evaluate areas of the urinary bladder difficult to evaluate with cystoscopy, such as the anterior bladder neck and narrowmouthed diverticula. Finally, virtual cystoscopy provides both intraluminal and extraluminal pathologic changes, so intravesical disease and exrtavesical extension can be evaluated in the same study. One of the limitations of this technique is the difficulty to demonstrate small-sized lesions. The introduction of multi-detector row CT (MDCT) scanners was a major technological advancement because among other things it substantially improves z-axis resolution by reducing section collimation and allowing the detection of very small lesions. The near isotropic or isotropic pixels achieved with a multidetector CT scanner, enable the creation of multiplanar reformatted images with a resolution very close to that of the axial images and three-dimensional (3D) renderings of outstanding quality. Transverse, multiplanar reformations and virtual endoscopic images are complementary

  16. Cardiac CT

    International Nuclear Information System (INIS)

    Dewey, Marc

    2011-01-01

    Computed tomography of the heart has become a highly accurate diagnostic modality that is attracting increasing attention. This extensively illustrated book aims to assist the reader in integrating cardiac CT into daily clinical practice, while also reviewing its current technical status and applications. Clear guidance is provided on the performance and interpretation of imaging using the latest technology, which offers greater coverage, better spatial resolution, and faster imaging. The specific features of scanners from all four main vendors, including those that have only recently become available, are presented. Among the wide range of applications and issues to be discussed are coronary artery bypass grafts, stents, plaques, and anomalies, cardiac valves, congenital and acquired heart disease, and radiation exposure. Upcoming clinical uses of cardiac CT, such as plaque imaging and functional assessment, are also explored. (orig.)

  17. Cardiac CT

    Energy Technology Data Exchange (ETDEWEB)

    Dewey, Marc [Charite - Universitaetsmedizin Berlin (Germany). Inst. fuer Radiologie

    2011-07-01

    Computed tomography of the heart has become a highly accurate diagnostic modality that is attracting increasing attention. This extensively illustrated book aims to assist the reader in integrating cardiac CT into daily clinical practice, while also reviewing its current technical status and applications. Clear guidance is provided on the performance and interpretation of imaging using the latest technology, which offers greater coverage, better spatial resolution, and faster imaging. The specific features of scanners from all four main vendors, including those that have only recently become available, are presented. Among the wide range of applications and issues to be discussed are coronary artery bypass grafts, stents, plaques, and anomalies, cardiac valves, congenital and acquired heart disease, and radiation exposure. Upcoming clinical uses of cardiac CT, such as plaque imaging and functional assessment, are also explored. (orig.)

  18. CT scanning may adversely influence choice of surgery in paediatric ...

    African Journals Online (AJOL)

    Kurt

    with a thyroid mass. Computed tomography (CT) revealed a lesion, missed by ultrasonography, which reversed the decision to perform con- servative thyroid surgery. The lesion proved to be non-neoplastic. CT may be a useful adjunct when ultrasound demonstrates a solitary lesion and conservative surgery is considered,.

  19. 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.)

  20. Association of Papillary Thyroid Carcinoma and Graves' Disease. Unexpected Development and Efficiency of Ablative Dose with Recombinant Human Thyrotropin (rhTSH); Asociación de carcinoma papilar de tiroides y enfermedad de Graves. Inesperada evolución y eficacia de la dosis ablativa con tirotrofina recombinante humana (rhTSH)

    Energy Technology Data Exchange (ETDEWEB)

    Pacenza, N. A.; Groppo, N. [Centro Médico “Enrique Tortosa”, Consultorio de Endocrinología, Buenos Aires (Argentina); Guibourg, H. C. [Sigma Imágenes Médicas S.A., Servicio de Medicina Nuclear, Buenos Aires (Argentina)

    2013-07-01

    22-year-old obese man. Highlights: 1) The importance of initial US exploration in a patient with GD, 2) Residual neoplastic lymph node tissue after 2 S, performed by an experienced surgeon, with enough functioning tissue to prevent a significant elevation of TSH and allow I{sup 131} ablative therapy, 3) Tumor local aggressiveness shown by adjacent tissues and lymph node infiltration, 4) Failure to identify residues in the neck by CT and US; instead, effectiveness of the neck MRI without contrast and {sup 99m}Tc thyroid scan, 5) Effective use of ablative radioiodine therapy with rhTSH. (authors) [Spanish] El carcinoma diferenciado de tiroides (CDT) asociado a enfermedad de Graves (EG) es una asociación relativamente rara, ocurriendo en el 0,3 % al 9,8 % de los pacientes operados por EG. Se presenta el caso de un paciente con EG y CDT de tiroides con características evolutivas y terapéuticas peculiares. Varón de 22 años que consultó por obesidad. Peso: 116,4 kg, Talla: 1,73 m, BMI: 38,9, clínicamente eutiroideo, con palpación tiroidea dificultosa por grosor de cuello. Análisis iniciales: T3, T4 y TSH dentro de rango normal y ecografía tiroidea con nódulo hipoecoico en lóbulo derecho (LD) de 11 x 10 mm. Se le solicitó punción aspirativa con aguja fina (PAAF) bajo guía ecográfica. Vuelve a los 4 meses con cuadro clínico de hipertiroidismo. Análisis: T3: 557 ng/dL, T4: 18,8 mcg/dL, T4 L: 3,73 ng/dL, TSH: < 0,01 μIU/mL, ATPO: 186 UI/mL, ATG: 965 UI/mL. La citología mostró: {sup H}allazgos citológicos vinculables con carcinoma papilar (CP) tiroideo{sup .} Centellograma tiroideo: {sup N}ódulo integrado en LD{sup .} Es tratado con metimazol y se opera a los 2 meses: {sup T}iroidectomía total{sup ;} cuya anatomía patológica (AP) reveló un {sup C}P variante folicular en lóbulo derecho y zona de CP variante clásica en lóbulo izquierdo{sup .} A los 35 y 60 días de operado (sin instaurar levotiroxina): presenta TSH <0,1 μIU/mL con T3 y T4 normales

  1. Computed Tomography (CT) -- Sinuses

    Medline Plus

    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 ...

  2. Computed Tomography (CT) -- Head

    Medline Plus

    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 ...

  3. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ... preferable over CT scanning. top of page Additional Information and Resources RTAnswers.org: Radiation Therapy for Bladder ...

  4. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ...

  5. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ...

  6. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ...

  7. Radiation exposure in whole body CT screening.

    Science.gov (United States)

    Suresh, Pamidighantam; Ratnam, S V; Rao, K V J

    2011-04-01

    Using a technology that "takes a look" at people's insides and promises early warnings of cancer, cardiac disease, and other abnormalities, clinics and medical imaging facilities nationwide are touting a new service for health conscious people: "Whole body CT screening" this typically involves scanning the body from the chin to below the hips with a form of x-ray imaging that produces cross-sectional images. In USA direct-to-consumer marketing of whole body CT is occurring today in many metropolitan areas. Free standing CT screening centres are being sited in shopping malls and other high density public areas, and these centres are being advertised in the electronic and print media. In this context the present article discussed the pros and cons of having such centres in India with the advent of multislice CT leading to fast scan times.

  8. Paciente con esquizofrenia tratado con ziprasidona + clozapina

    Directory of Open Access Journals (Sweden)

    Pol Yanguas E.

    2013-05-01

    Full Text Available P es un paciente diagnosticado de esquizofrenia, sigue en un piso tutelado un programa de rehabilitación, está medicado con clozapina 500 mg/día y ziprasidona 280 mg/ día. Padece hipercolesterolemia, tabaquismo y sus hábitos alimenticios no son buenos. La medicación que utiliza desde 2007 hasta ahora se refleja en la tabla 1. El último tratamiento se le introdujo el 7 de agosto de 2012, habiendo presentado un electro cardiograma (ECG normal, pero con ligera taquicardia ventricular y prolactinemia de 44,8 ng/ml (valores normales: 2-18 ng/ml.

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

    Medline Plus

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

  10. Derrame pericárdico grave en un paciente con hipotiroidismo Severe pericardial effusion in a patient with hypothyroidism

    Directory of Open Access Journals (Sweden)

    María Norbelis Viamonte Tapia

    2012-12-01

    Full Text Available Se expone el caso clínico de un paciente de 40 años de edad, con aparente buena salud, atendido en el Hospital Clinicoquirúrgico Docente "Dr. Joaquín Castillo Duany" de Santiago de Cuba por presentar, desde hacía varios meses, dolor abdominal en epigastrio, no irradiado, asociado a molestia en la región anterior del tórax, dificultad para respirar, hinchazón en las piernas, decaimiento, somnolencia y dolores articulares, así como andar lento y disminución de la memoria, entre otros síntomas. Los resultados de los exámenes complementarios confirmaron que se trataba de un derrame pericárdico de causa hipotiroidea. Se indicó tratamiento sustitutivo con hormonas tiroideas (levotiroxina sódica. Evolucionó favorablemente y egresó de la institución hospitalaria, pero fue reevaluado a los 3 meses, observándose una mejoría significativa.The case of an apparently healthy 40 year-old patient is reported, who was attended in "Dr. Joaquín Castillo Duany" Clinical Surgical Hospital of Santiago de Cuba to present with epigastric abdominal pain for several months, no irradiated and associated with discomfort in anterior chest, breathing difficulty, swelling of the legs, weakness, drowsiness and joint pains, as well as slow gait, impaired memory, and other symptoms. The results of additional tests confirmed a pericardial effusion of hypothyroid cause. A replacement therapy was administered with thyroid hormones (sodium levothyroxine. He made good progress and was discharged from the hospital, but he was reevaluated at 3 months and a significant improvement was observed.

  11. Computed Tomography (CT) -- Head

    Medline Plus

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

  12. Abdominal and Pelvic CT

    Medline Plus

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

  13. Spinal CT scan, 1

    International Nuclear Information System (INIS)

    Nakagawa, Hiroshi

    1982-01-01

    Methods of CT of the cervical and thoracic spines were explained, and normal CT pictures of them were described. Spinal CT was evaluated in comparison with other methods in various spinal diseases. Plain CT revealed stenosis due to spondylosis or ossification of posterior longitudinal ligament and hernia of intervertebral disc. CT took an important role in the diagnosis of spinal cord tumors with calcification and destruction of the bone. CT scan in combination with other methods was also useful for the diagnosis of spinal injuries, congenital anomalies and infections. (Ueda, J.)

  14. Videojuego con Realidad Virtual

    OpenAIRE

    González Mora, César

    2017-01-01

    El objetivo del proyecto es el desarrollo de un videojuego deportivo que utilice realidad mixta. El videojuego se podrá utilizar con dispositivos de tipo cardboard, y utilizará realidad aumentada para la interacción del jugador con el videojuego. En el desarrollo se utilizará el motor Unity para conseguir una aplicación multiplataforma, y la librería Vuforia para implementar realidad mixta.

  15. Sistemas integrados con Arduino

    OpenAIRE

    EL YAKOUTI, MOHAMMED

    2017-01-01

    Design of a robot prototype remotely controllable from Bluetooth using Arduino. Control and testing of sensors and events interacting with Arduino and Bluetooth. Diseño de un prototipo de robot controlable remotamente con Bluetooth utilizando Arduino. Control y verificación de los sensores y eventos que interactúan mediante el Arduino y el Bluetooth. El Yakouti, M. (2017). Sistemas integrados con Arduino. http://hdl.handle.net/10251/89274. TFGM

  16. Tratamiento de la Enfermedad de Graves con I131: Primeros casos en la Unidad de Endocrinología Pediátrica del Hospital Nacional Cayetano Heredia, Lima-Perú: Case Report.

    Directory of Open Access Journals (Sweden)

    Javier Ernesto SÁNCHEZ POVIS

    2006-01-01

    Full Text Available Objetivo: Describir la respuesta al tratamiento con I131 y sus complicaciones, en niños y adolescentes con enfermedad de Graves. Material y Métodos: Se estudiaron retrospectivamente las historias clínicas de los pacientes con diagnóstico de enfermedad de Graves y que recibieron tratamiento con I131 atendidos hasta 1999 en la Unidad de Endocrinología Pediátrica del Hospital Nacional Cayetano Heredia. Se registraron datos demográficos, peso tiroideo, captación de yodo, dosis de I131 recibida y evolución clínica y de función tiroidea. Resultados: Se incluyeron 13 pacientes: 1 varón y 12 mujeres. El peso glandular promedio obtenido fue 47,56 +10,70 gramos. La dosis inicial calculada fue 3,92 + 0,95 mCi, con un total de 4,47 + 1,66 mCi y tiempo medio de seguimiento de 2,76 años. Diez pacientes recibieron 1 sola dosis, 2 pacientes dos dosis y un paciente tres dosis, remitiendo el 100%. Los pacientes que recibieron una sola dosis, mostraron remisión del cuadro en 13,13 semanas y el tiempo promedio de remisión de toda la muestra fue 24,62 semanas. La prevalencia de hipotiroidismo a los 6 meses de iniciado el tratamiento fue 66,66%, y 83,33% a las 257 semanas. Conclusión: I131 fue 100% eficaz en el tratamiento de la enfermedad de Graves de los niños y adolescentes en esta pequeña serie de casos. (Rev Med Hered 2006;17:8-14.

  17. Mujer joven con hipertiroidismo asociado a insuficiencia tricuspídea grave Young woman with hyperthyroidism associated with severe tricuspid regurgitation

    Directory of Open Access Journals (Sweden)

    Ariel K. Saad

    2008-02-01

    Full Text Available Las manifestaciones cardiovasculares del hipertiroidismo son frecuentes, y en ocasiones dominan el cuadro clínico. Con frecuencia, la enfermedad se manifiesta por un estado circulatorio hiperdinámico, con disminución de la resistencia vascular periférica, aumento de la volemia y del volumen minuto cardíaco. La dilatación de las cavidades cardíacas con insuficiencia tricuspídea grave e insuficiencia cardíaca derecha sin hipertensión pulmonar constituye una forma inusual de presentación. Se presenta el caso de una joven paciente, portadora de enfermedad de Graves Basedow, sin antecedentes cardiovasculares, que evoluciona en el transcurso de un mes con edema de miembros inferiores, palpitaciones, diarrea, pérdida de peso y fiebre. Al examen clínico se evidencian taquicardia con pulso irregular, signos de insuficiencia cardíaca derecha acompañado de un intenso soplo regurgitante que aumentaba con la inspiración. Por radiografía de tórax y ecocardiograma se constata cardiomegalia e insuficiencia tricuspídea grave sin hipertensión pulmonar. El cuadro se resuelve en forma rápida luego del tratamiento con propranolol, corticoides y diuréticos, con reversión de la arritmia y franca mejoría de los signos y síntomas. Se analizan en forma breve los efectos de las hormonas tiroideas en el aparato cardiovascular y se postulan probables mecanismos fisiopatológicos de la insuficiencia cardíaca en el hipertiroidismo.Cardiovascular manifestations of hyperthyroidism are frequent and sometimes are relevant in the clinical picture. Usually an hyperdynamic circulatory state hallmarks the disease with low peripheral resistance, increased intravascular volume and cardiac output. However, right chamber dilatation with tricuspid valve regurgitation and cardiac failure are unusual. We present the case of a young woman with Graves-Basedow disease without cardiovascular history who complained about palpitations, peripheral edemas, weight loss and

  18. Investigando con personas con dificultades de aprendizaje

    Directory of Open Access Journals (Sweden)

    Borja González Luna

    2013-12-01

    Full Text Available El artículo muestra los orígenes de lo que Walmsley (2008 denomina «investigación inclusiva». Para comprender qué se entiende por investigación inclusiva tenemos que remontarnos a los debates epistemológicos sobre las metodologías cuantitativas y cualitativas, acontecidos en la década de los 90, en torno a la revista Disability & Society. A partir de una síntesis de dichos debates, focalizados en el ámbito de la «discapacidad intelectual y del desarrollo», se exponen dos estrategias de colaboración con dicha población: a una aproximación etnográfica (de trabajo grupal, y b una aproximación biográfica (de trabajo individual. A continuación se esboza un posible diseño de trabajo de campo que intenta superar el paradigma cualitativo «clásico» con el objetivo de incluir a dicho colectivo más allá del rol de «sujetos de la investigación». Para finalizar se recoge el debate sobre la accesibilidad de los resultados de la investigación a los participantes en dichas investigaciones, y con ello la necesaria innovación en el ámbito de las «devoluciones» de los resultados, cuando se trata de incluir a personas que presentan limitaciones para la comprensión del lenguaje abstracto oral y/o escrito.

  19. Feasibility of the use of PET/CT with {sup 1}8F-colina to increase the dose in traprostaticas lesions in radiotherapy of prostate cancer treatment; Viabilidad del uso de la PET/TC con {sup 1}8F-colina para aumentar la dosis en las lesiones intraprostaticas en tratamientos de radioterapia de cancer de prostata

    Energy Technology Data Exchange (ETDEWEB)

    Garcia Hernandez, T.; Vicedo Gonzalez, A.; Pastor Peidro, J.; Lopez Torrecilla, J.; Rosello Ferrando, J.; Brualla Congalez, L.; Granero Cabanero, D.; Ferrer Rebolleda, J.; Sanchez Jurado, R.

    2013-07-01

    This paper explores the viability of an escalation of doses higher than 80 Gy in intraprostatics lesions, defined by 18FFluorocolina PET/CT, analyzing the variation of the dose in the organs of risk with respect to traditional planning with CT. (Author)

  20. 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.

  1. CT appearance of splenosis

    International Nuclear Information System (INIS)

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

    1982-01-01

    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

  2. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ... prescribed procedure with your doctor, the medical facility staff and/or your insurance provider to get a ...

  3. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ... prescribed procedure with your doctor, the medical facility staff and/or your insurance provider to get a ...

  4. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ... prescribed procedure with your doctor, the medical facility staff and/or your insurance provider to get a ...

  5. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... cavities (ventricles) in patients with hydrocephalus . diseases or malformations of the skull. CT scanning is also performed ... biopsy ) from the brain. assess aneurysms or arteriovenous malformations through a technique called CT angiography. For more ...

  6. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... CT scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector ... Safety page for more information about radiation dose. Women should always inform their physician and x-ray ...

  7. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... CT scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector ... Safety page for more information about radiation dose. Women should always inform their physician and x-ray ...

  8. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... CT scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector ... Safety page for more information about radiation dose. Women should always inform their physician and x-ray ...

  9. Abdominal and Pelvic CT

    Medline Plus

    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 ...

  10. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... CT of the Sinuses? CT is usually the first test ordered when a sinus tumor is suspected. ... Radiology (ACR) and the Radiological Society of North America (RSNA), comprising physicians with expertise in several radiologic ...

  11. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... CT scanner or may be over the weight limit—usually 450 pounds—for the moving table. CT ... type your comment or suggestion into the following text box: Comment: E-mail: Area code: Phone no: ...

  12. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much ... CT scan, an experienced radiologist can diagnose many causes of abdominal pain or injury from trauma with ...

  13. Computed Tomography (CT) -- Sinuses

    Medline Plus

    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 ...

  14. Abdominal and Pelvic CT

    Medline Plus

    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 ...

  15. Computed Tomography (CT) -- Head

    Medline Plus

    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 ...

  16. Computed Tomography (CT) -- Sinuses

    Medline Plus

    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. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... about tumors of the nasal cavity and sinuses. plan for surgery by defining anatomy. top of page ... for sinusitis. CT of the sinuses can help plan the safest and most effective surgery. CT of ...

  18. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... When the image slices are reassembled by computer software, the result is a very detailed multidimensional view ... Safety Images related to Computed Tomography (CT) - Head Videos related to Computed Tomography (CT) - Head Sponsored by ...

  19. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... When the image slices are reassembled by computer software, the result is a very detailed multidimensional view ... related to Computed Tomography (CT) - Abdomen and Pelvis Videos related to Computed Tomography (CT) - Abdomen and Pelvis ...

  20. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... sinus cavities – hollow, air-filled spaces within the bones of the face surrounding the nasal cavity. CT ... CD or DVD. CT images of internal organs, bones, soft tissue and blood vessels provide greater detail ...

  1. Computed Tomography (CT) -- Head

    Medline Plus

    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- ...

  2. Computed Tomography (CT) -- Sinuses

    Medline Plus

    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- ...

  3. Abdominal and Pelvic CT

    Medline Plus

    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- ...

  4. Abdominal and Pelvic CT

    Medline Plus

    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 ...

  5. Computed Tomography (CT) -- Head

    Medline Plus

    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 ...

  6. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... over time. top of page What are the benefits vs. risks? Benefits A CT scan is one of the safest ... scanning is painless, noninvasive and accurate. A major advantage of CT is its ability to image bone, ...

  7. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... over time. top of page What are the benefits vs. risks? Benefits Viewing a CT scan, an experienced radiologist can ... scanning is painless, noninvasive and accurate. A major advantage of CT is its ability to image bone, ...

  8. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... as a CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces ... particularly the lungs, abdomen, pelvis and bones. A diagnosis determined by CT scanning may eliminate the need ...

  9. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... as a CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces ... medical device of any kind, unlike MRI. A diagnosis determined by CT scanning may eliminate the need ...

  10. Abdominal and Pelvic CT

    Medline Plus

    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 ...

  11. Abdominal and Pelvic CT

    Medline Plus

    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) -- Sinuses

    Medline Plus

    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, ...

  13. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... sometimes compared to looking into a loaf of bread by cutting the loaf into thin slices. When ... actual CT scanning is performed. Depending on the type of CT scan, the machine may make several ...

  14. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... can be performed if you have an implanted medical device of any kind, unlike MRI. CT imaging ...

  15. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... can be performed if you have an implanted medical device of any kind, unlike MRI. CT imaging ...

  16. Computed Tomography (CT) -- Head

    Medline Plus

    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 ...

  17. Abdominal and Pelvic CT

    Medline Plus

    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 ...

  18. Computed Tomography (CT) -- Sinuses

    Medline Plus

    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 ...

  19. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ... membranes covering the brain. top of page Additional Information and Resources RTAnswers.org Radiation Therapy for Brain ...

  20. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ... for the moving table. top of page Additional Information and Resources RTAnswers.org Radiation Therapy for Head ...

  1. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... Stroke Brain Tumors Computer Tomography (CT) Safety During Pregnancy Head and Neck Cancer X-ray, Interventional Radiology and Nuclear Medicine Radiation Safety Images related to Computed Tomography (CT) - ...

  2. Computed Tomography (CT) -- Sinuses

    Medline Plus

    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 ...

  3. Computed Tomography (CT) -- Sinuses

    Medline Plus

    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. Computed Tomography (CT) -- Head

    Medline Plus

    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. Abdominal and Pelvic CT

    Medline Plus

    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

    Medline Plus

    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... Then, the table will move slowly through the machine as the actual CT scanning is performed. Depending ...

  7. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... Then, the table will move slowly through the machine as the actual CT scanning is performed. Depending ...

  8. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... Then, the table will move slowly through the machine as the actual CT scanning is performed. Depending ...

  9. CT of the knee

    International Nuclear Information System (INIS)

    Ghelman, B.

    1987-01-01

    CT can be combined with arthrography of the knee to study the following abnormalities: meniscal tears and cysts, synovial plicae, chondromalacia patellae, and osteochondritis dissecans. The CT-arthrogram images present abnormalities in a manner that resembles the ''in situ'' surgical findings, allowing management decisions to be made with greater confidence. The CT techniques for imaging the knee after arthrography are discussed, as is the use of plain CT

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

    Medline Plus

    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 ...

  11. CT of laryngotracheal trauma

    International Nuclear Information System (INIS)

    Lupetin, A.R.; Daffner, R.H.

    1991-01-01

    This paper evaluates the usefulness of CT for the diagnosis of traumatic laryngotracheal abnormalities. The authors retrospectively evaluated the neck CT studies of 50 patients (36 males, 14 females; age range, 16-75 years) who presented to a level I trauma center after suffering a blunt or penetrating laryngotracheal injury. CT results were correlated with endoscopic or surgical findings in 43 cases. Three groups emerge. CT positive: hyloid bone or laryngotracheal cartilage injury; CT positive: soft-tissue injury only; and CT negative. In group 1, CT demonstrated all bony or cartilaginous injuries proved at surgery or suggested at endoscopy. CT failed to demonstrate laryngotracheal separation in 1 case. In group 2, CT demonstrated all soft-tissue injuries suggested at endoscopy. In group 3, CT findings agreed with those of endoscopy in 7 cases, but minor soft-tissue findings seen at endoscopy were missed in 3 cases. Seven patients were studied only with CT. Ct is an accurate technique for detecting bony or cartilaginous laryngotracheal traumatic abnormalities. However, laryngotracheal separation and minor soft-tissue injuries can be missed

  12. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... Physician Resources Professions Site Index A-Z Computed Tomography (CT) - Sinuses Computed tomography (CT) of the sinuses uses special x-ray equipment ... story here Images × Image Gallery Patient undergoing computed tomography (CT) scan. View full size with caption Pediatric Content ...

  13. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... Physician Resources Professions Site Index A-Z Computed Tomography (CT) - Head Computed tomography (CT) of the head uses special x-ray equipment ... story here Images × Image Gallery Patient undergoing computed tomography (CT) scan. View full size with caption Pediatric Content ...

  14. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... vessels. CT examinations are fast and simple; in emergency cases, they can reveal internal injuries and bleeding quickly enough to help save lives. CT has been shown to be a cost-effective imaging tool for a wide range of clinical problems. CT is less sensitive to patient movement ...

  15. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... vessels. CT examinations are fast and simple; in emergency cases, they can reveal internal injuries and bleeding quickly enough to help save lives. CT has been shown to be a cost-effective imaging tool for a wide range of clinical problems. CT is less sensitive to patient movement ...

  16. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... vessels. CT examinations are fast and simple; in emergency cases, they can reveal internal injuries and bleeding quickly enough to help save lives. CT has been shown to be a cost-effective imaging tool for a wide range of clinical problems. CT is less sensitive to patient movement ...

  17. Computed Tomography (CT) -- Head

    Medline Plus

    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 ( ...

  18. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... CT examinations are fast and simple; in emergency cases, they can reveal internal injuries and bleeding quickly enough to help save lives. CT has been shown to be a cost-effective imaging tool for a wide range of clinical problems. CT ...

  19. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... CT examinations are fast and simple; in emergency cases, they can reveal internal injuries and bleeding quickly enough to help save lives. CT has been shown to be a cost-effective imaging tool for a wide range of clinical problems. CT ...

  20. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... CT examinations are fast and simple; in emergency cases, they can reveal internal injuries and bleeding quickly enough to help save lives. CT has been shown to be a cost-effective imaging tool for a wide range of clinical problems. CT ...

  1. Giochiamo con i robot

    Directory of Open Access Journals (Sweden)

    Andrea Bonarini

    2009-01-01

    Full Text Available "Giochiamo con i robot" e' un laboratorio interattivo per grandi e piccini realizzato per l'edizione 2007 del Festival della Scienza di Genova. Lungo un percorso che va dalla telerobotica alla robotica evolutiva, il laboratorio sviluppa il tema di dare intelligenza ai robot. Questo percorso, le cui tappe sono le varie installazioni, si conclude nella "bottega" dove e' possibile costruire e programmare i propri robot o smontare e modificare quelli esposti durante il percorso didattico. I visitatori sono coinvolti in attivita' ludiche grazie alle quali possonoentrare in contatto con alcune delle idee potenti della robotica,

  2. disegnare con ... Alberto Pratelli

    Directory of Open Access Journals (Sweden)

    Roberto Mingucci

    2017-12-01

    Full Text Available Con questa breve intervista ad Alberto Pratelli, (non a caso scelto per aprire questa nuova rubrica intendia-mo inaugurare un dialogo con personalità significati-ve del Disegno di Architettura, che consenta riflessioni dedicate alle sue varie dimensioni, oggi più che mai da approfondire. La suggestione a farlo, viene da un’idea di Pablo Rodri-guez Navarro ed abbiamo quindi pensato di avviarla proprio in questo numero, che Pablo ha accettato di curare su un tema a lui particolarmente caro.

  3. Marketing cardiac CT programs.

    Science.gov (United States)

    Scott, Jason

    2010-01-01

    There are two components of cardiac CT discussed in this article: coronary artery calcium scoring (CACS) and coronary computed tomography angiography (CCTA).The distinctive advantages of each CT examination are outlined. In order to ensure a successful cardiac CT program, it is imperative that imaging facilities market their cardiac CT practices effectively in order to gain a competitive advantage in this valuable market share. If patients receive quality care by competent individuals, they are more likely to recommend the facility's cardiac CT program. Satisfied patients will also be more willing to come back for any further testing.

  4. Roentgen and X-ray computerized tomographic (CT) imaging of cysts in the maxilla

    International Nuclear Information System (INIS)

    Rahmatulla, M

    1999-01-01

    Two cysts in the maxilla were subjected to routine roentgen imaging followed by CT scanning. Roentgen investigation included periapical, occlusal, and panoramic views. CT imaging included axial and coronal scans. While roentgen views were adequate in establishing the diagnosis of the cystic lesions, CT scan was useful in understanding the precise antero-posterior expansion and depth of the lesion. Interpretation of CT scan of cystic jaw lesions without con-ventional radiographs can be misleading. Hence, the CT procedure may be used only as supplement to the routine radiographic investigations particularly in cystic lesions of the jaws. (author)

  5. Early smoking-induced lung lesions in asymptomatic subjects. Correlations between high resolution dynamic CT and pulmonary function testing; Danno polmonare precoce da fumo in soggetti asintomatici. Studio correlativo con TC dinamica ad elevata risoluzione e test di funzionalita' respiratoria

    Energy Technology Data Exchange (ETDEWEB)

    Spaggiari, Enrica; Zompadori, Maurizio; Bna' , Claudio; Ormitti, Francesca; Svaerzellati, Nicola; Rabaiotti, Enrico [Parma Univ., Parma (Italy). Sezione di Diagnostica per Immagini e UO di Scienze Radiologiche Dipartimento di Scienze Cliniche; Verduri, Alessia; Chetta, Alfredo [Parma Univ., Parma (Italy). Sezione Clinica Pneumologica

    2005-02-01

    Purpose: To evaluate the prevalence and significance of the pathological effects of cigarette smoking on the lung and the sensitivity of high-resolution CT (HRCT) in the recognition of early smoking-induced lesions in asymptomatic former of current smokers. Materials and methods: We performed a prospective and consecutive analysis of 36 volunteers (16 males, 20 females), 10 non-smokers (3 males, 7 females) and 26 smokers (13 males, 13 females / 17 current smokers; 9 former smokers), all asymptomatic and with normal respiratory flows. These subjects underwent lung function testing and HRCT, after providing written informed consent for the study. The HRCT scans were obtained at three pre-selected levels (aortic arch, tracheal carina and venous hilum). The same scans were obtained in post-expiration phase. At the level of the apical segmental bronchus of the right upper lobe, we measured on the monitor wall thickening, and the total and internal diameters using the techniques reported in literature. Each study was independently evaluated by two radiologists that were blinded to all clinical and functional data: they also evaluated the presence, prevalence and type of emphysema, areas of patchy hyperlucency and oligoemia in the inspiration phase and areas of expiratory air trapping. The extension was evaluated with the visual score method. The data obtained were analysed with the Windows SPSS package for statistical analysis. Results: The two groups (non smokers and smokers) showed significant differences in some functional tests such as FEV1 (p<0.005) and Tiffeneau index (p<0.005) which were lower in current-smokers or former-smokers, although still within the normal range. The HRCT study did not show areas of emphysema or air trapping in non smokers. In the smokers' group, air trapping was observed in 30.7% of cases: 33% former-smokers and 29.4% current smokers (mean extension was 21.36% in former smokers and 9.48% in current smokers). Mean extension in the

  6. Conversando con Oriol Bohigas

    OpenAIRE

    Redondo Domínguez, Ernesto; Moya Sala, Joaquim

    2015-01-01

    [EN] Interview with Oriol Bohigas [ES] Entrevista con Oriol Bohigas Redondo Domínguez, E.; Moya Sala, J. (2015). Conversando con… Oriol Bohigas. EGA. Revista de Expresión Gráfica Arquitectónica. 20(26):22-35. doi:10.4995/ega.2015.4061 22 35 20 26

  7. DR Con o:

    African Journals Online (AJOL)

    which could fall under the Ugandan influence. The con-. flict in the ..... The Congolese people and international community within SADC, the AU ..... ments and make peace among themselves. However, one ... friends overnight.There is a great ...

  8. fertilizada con diferentes abonos

    Directory of Open Access Journals (Sweden)

    Jorge Alberto Elizondo-Salazar

    2007-01-01

    Full Text Available Producción y calidad de la biomasa de morera (Morus alba fertilizada con diferentes abonos. Se llevó a cabo un experimento en la Estación Experimental “Alfredo Volio Mata” de la Universidad de Costa Rica con el fi n de evaluar la aplicación de 150 kg de N/ha/año proveniente de dos abonos orgánicos: lombriabono y compostaje; y de un fertilizante químico, sobre la producción y calidad de la biomasa de morera. El periodo experimental comprendió un ciclo de 12 meses, iniciando en julio del 2003 y fi nalizando en julio del 2004. Se utilizó una plantación de morera de 12 años de establecida con una densidad de siembra de 27.777 plantas/ ha. Se empleó un diseño de bloques completos al azar con cuatro tratamientos: dos abonos orgánicos, nitrato de amonio (33,5% N y un control. Las plantas se podaron a 0,6 m sobre el nivel del suelo al inicio del ensayo. Durante el periodo experimental, las plantas fueron podadas consecutivamente cada 90 días. Las hojas y los tallos fueron separados y analizados para determinar el contenido de materia seca y proteína cruda. La producción de materia seca fue 23% superior y el contenido de proteína cruda fue signifi cativamente mayor con el nitrógeno químico, mientras que el contenido de materia seca fue menor. No se encontraron diferencias signifi cativas entre el tratamiento control y los tratamientos orgánicos.

  9. Treatment of solitary, autonomously-functioning, non-toxic thyroid nodules with I131 Adenema tiroideo autónomo no tóxico tratamiento con I131

    Directory of Open Access Journals (Sweden)

    Federico Uribe Londoño

    1991-03-01

    Full Text Available

    Fifteen euthyroid patients (14 women and 1man with solitary autonomously functioning non-toxic thyroid nodules (AFTN were treated with high doses of I131 (mean 19.2 mCi. Diagnosis was made by I131 thyroid scan and triiodothyronine suppression test. The size of the nodule was determined by thyroid ecography both before and after treatment. Evaluation of thyroid function was performed clinically and by T3 T4 and TSH determinations before therapy and during follow.up. AII patients had complete suppression of the surrounding thyroid parenchyma. Two cases of hypothyroidism were found in the first two years of follow-up. We have no explanation for this fact since extranodular thyroid tissue was suppressed and the patients were receiving oral triiodothyronine during radioidine treatment. The nodules decreasedin size In 9 of 13 patients followed (average decrease 45% and disappeared in other 2. our findings suggest that solitary non-toxic AFTN should be treated with I131 particularly if complete suppression of the surrounding thyroid tissue is found. If complete disappearance of the nodule is considered desirable surgical removal must be performed.

    Se trataron 14 mujeres y un hombre, con adenomas tiroideos solitarios funcionalmente autónomos, no tóxicos, con I131 a una dosis promedio de 19.2 mCi. La gamagrafía tiroidea demostró hipercaptación del nódulo con supresión total del resto de la glándula. El tamaño del nódulo se determinó por medio de ecografía tiroidea antes y después del tratamiento, y su autonomía por la prueba de supresión con triyodotironina. El estado tiroideo se puso de presente clínicamente y por la medición de T3, T 4 y TSH en el plasma, antes de la terapia con el radiofármaco y durante la evolución postratamiento. En dos

  10. Spinal CT scan, 2

    International Nuclear Information System (INIS)

    Nakagawa, Hiroshi

    1982-01-01

    Plain CT described fairly accurately the anatomy and lesions of the lumbar and sacral spines on their transverse sections. Since hernia of the intervertebral disc could be directly diagnosed by CT, indications of myelography could be restricted. Spinal-canal stenosis of the lumbar spine occurs because of various factors, and CT not only demonstrated the accurate size and morphology of bony canals, but also elucidated thickening of the joints and yellow ligament. CT was also useful for the diagnosis of tumors in the lumbar and sacral spines, visualizing the images of bone changes and soft tissues on the trasverse sections. But the diagnosis of intradural tumors required myelography and metrizamide CT. CT has become important for the diagnosis of spinal and spinal-cord diseases and for selection of the route of surgical arrival. (Chiba, N.)

  11. CT of Mirizzi syndrome

    International Nuclear Information System (INIS)

    Yamamoto, Shinichiro; Fukushima, Keisuke; Ishihara, Kenji; Hirano, Yutaka; Sano, Kaizo

    1983-01-01

    PTC or ERCP findings of four cases of Mirizzi syndrome were demonstrated. They consisted of a smooth stricture of the common hepatic duct, curved impressions of the duct and dilatation of proximal biliary radicles. CT could visualize the impacted stone in the neck of the gallbladder, dilatation of proximal common hepatic and intrahepatic duct. Absence of the dilatation of distal common bile duct could also be confirmed by CT, thus the diagnosis of Mirizzi syndrome might be possible by CT. (author)

  12. pacientes con falla cardiaca

    Directory of Open Access Journals (Sweden)

    Diana Marcela Achury Saldaña

    2007-01-01

    Full Text Available Objetivo: determinar la adherencia al tratamiento de pacientes con falla cardiaca hospitalizados, al aplicar un plan educativo quefomenta el autocuidado.Método: estudio cuasiexperimental (entrevistas enfermera-paciente realizado entre diciembre de 2004 y mayo de 2006, con unamuestra de 50 pacientes seleccionados por conveniencia. Se diseñó un instrumento para evaluar los comportamientos de los pacientes,con base en algunos resultados de la adherencia y sus respectivos indicadores de la taxonomía NOC (Nursing out comes classification. Laadherencia al tratamiento fue medida en dos momentos: el primero durante la hospitalización, seguido de la aplicación del plan educativoantes del alta, que proporcionaba información en el manejo de su enfermedad desde una dimensión física, psicológica y social quepromueve el autocuidado; y el segundo un mes después del alta en su domicilio.Resultados: diferencias estadísticamente significativas (P=0,0001 que demuestran cómo mediante la capacitación al paciente enel manejo de su tratamiento farmacológico y no farmacológico, el establecimiento de una sana relación entre el profesional de enfermeríay el paciente, y la participación de la familia, se logra una total adherencia al tratamiento.Conclusiones: para lograr una adherencia total del paciente con falla cardiaca al tratamiento es necesario un proceso educativo y unseguimiento continuo y personalizado que motive permanentemente al paciente y se le reconozca el papel protagónico en su cuidado y manejo de la enfermedad.

  13. Coronary CT angiography

    Energy Technology Data Exchange (ETDEWEB)

    Dewey, Marc [Charite - Universitaetsmedizin Berlin (Germany). Inst. fuer Radiologie

    2009-07-01

    Coronary CT angiography has attained increasing scientific attention at academic institutions and has become a highly accurate diagnostic modality. Extending this knowledge into a practice setting is the purpose of 'Coronary CT Angiography'. This book will assist you in integrating cardiac CT into your daily practice, while also giving an overview of the current technical status and applications. The specific features of scanners from all four main vendors are also presented providing an objective overview of noninvasive coronary angiography using CT. (orig.)

  14. Head CT scan

    Science.gov (United States)

    ... scan - orbits; CT scan - sinuses; Computed tomography - cranial; CAT scan - brain ... head size in children Changes in thinking or behavior Fainting Headache, when you have certain other signs ...

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

    Medline Plus

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

  16. Radiodine treatment of hyperthyroidism with a simplified dosimetric approach. Clinical results; Terapia radiometabolica dell'ipertiroidismo con approccio dosimetrico semplificato. Risultati clinici

    Energy Technology Data Exchange (ETDEWEB)

    Giovanella, L.; De Palma, D.; Ceriani, L.; Garancini, S. [Azienda Ospedaliera Universitaria, Ospedale di Circolo e Fondazione Macchi, Dipt. di Diagnostica per Immagini e Radioterapia, Unita' Operativa di Medicina Nucleare, Varese (Italy); Vanoli, P.; Tordiglione, M. [Azienda Ospedaliera Universitaria, Ospedale di Circolo e Fondazione Macchi, Unita' Operativa di Radioterapia, Varese (Italy); Tarolo, G. L. [Milan Univ., Milan (Italy). Cattedra di Medicina Nucleare, Ist. di Scienze Radiologiche

    2000-12-01

    euthyroid and 12 of 146% (8%) patients hyperthyroid. Two patients were immediately submitted to a new radioiodine administration. One year posttreatment 142 of 146 (97%) patients were euthyroid while only 4 of 146 (3%) patients showed TSH levels above the normal range. Only 2 of them required thyroxine treatment. The simplified dosimetric method illustrated in this paper is very effective in clinical practice because it permits to avoid resorting to sophisticated but also imprecise quantitative methods. Hypothyroidism should not be considered as a major collateral effect of radioiodine treatment, particularly in Graves' disease. In fact, the pathogenesis of the disease requires an ablative treatment with both surgery and radioiodine treatment and the control of hyperthyroidism and the prevention of relapse are the major clinical targets. Vice versa, hypothyroidism was very uncommon in uni- and multinodular toxic goiter when the dosimetric approach was applied. [Italian] In questo documento viene valutata l'efficacia clinica di un metodo dosimetrico semplificato per la determinazione dell'attivita' terapeutica di iodio-131 da somministrare per il trattamento con intento ablativo di pazienti ipertiroidei affetti da morbo di Graves-Basedow e da gozzo uni o multinodulare tossico. Sono stati arruolati 189 pazienti ipertiroidei sottoposti a ecografia e scintigrafia tiroidea con diagnosi di morbo di Graves-Basedow (43 pazienti), gozzo uninodulare tossico (57 pazienti) e multinodulare tossico (89 pazienti). In 28 pazienti sono stati riscontrati noduli tiroidei freddi di cui e' stata effettuata la citoagoaspirazione con esclusione di caratteri citologici di malignita' in tutti i casi. La terapia medica con farmaci tireostatici e' stata sospesa 5 giorni prima del trattamento radiometabolico e, se necessario, ripresa 15 giorni dopo. Tutti i pazienti sono stati sottoposti a studio della iodocaptazione e l'attivita' terapeutica e' stata

  17. Consumo de alcohol en ratas adolescentes tratadas con reserpina y fluoxetina

    Directory of Open Access Journals (Sweden)

    Paul Ruiz

    2017-01-01

    Full Text Available Si bien se ha estudiado el vínculo entre los trastornos de estado de ánimo y el consumo de alcohol, tanto en humanos como en animales, todavía no es del todo claro cómo se da esta relación, y menos aún durante la adolescencia. La administración de reserpina, un depletor de monoaminas, es un modelo ampliamente utilizado en roedores adultos para inducir comportamientos asociados a depresión, pero se desconoce su utilidad en otras etapas del desarrollo. En este trabajo validamos este modelo en ratas adolescentes y posteriormente estudiamos el consumo de alcohol en estos animales, así como su modulación por antidepresivos. En el experimento 1 se administró reserpina (0.0 o 1.0 mg/kg, durante 4 días, IP a ratas Wistar machos de 30 días. El consumo de alcohol fue evaluado luego de observar comportamientos asociados a depresión e indagar indicadores neuroendocrinos de esta patología. En el experimento 2 los animales recibieron reserpina, seguida por el antidepresivo fluoxetina (0.0 o 10.0 mg/kg, durante 4 días, IG, y luego se evaluó el consumo de alcohol. Los resultados mostraron que la reserpina aumentó significativamente los comportamientos asociados a depresión y alteró los niveles de dopamina en la corteza insular y de hormonas tiroideas en sangre. En la prueba de consumo de alcohol los animales deprimidos, pero no los controles, mostraron un incremento en el consumo a través de los días. El segundo experimento replicó parcialmente este perfil, y no se observó un efecto significativo del antidepresivo en el consumo de alcohol. Los resultados indican que la reserpina es útil para modelar en ratas adolescentes comportamientos asociados a depresión. Se encontró una relación entre este estado y el consumo de alcohol, que no se pudo revertir con antidepresivos.

  18. Cementos con cenizas volantes

    Directory of Open Access Journals (Sweden)

    Ossa M., Mauricio

    1984-03-01

    additions of 20 and 30% .

    Casi la generalidad de los estudios realizados sobre cementos con adición de cenizas volantes se refieren a sus características y comportamiento en pastas, morteros y hormigones, siempre en relación con aquéllos del cemento portland. Esta vez, se desarrolló un trabajo experimental orientado a relacionar entre sí los cementos con adiciones de cenizas volantes y de puzolana natural. Para ello se fabricaron a escala de laboratorio cementos de ambos tipos, empleando como materias primas comunes clinker y yeso y, como variables, diferentes porcentajes de las dos adiciones, que cumplieron previamente los requisitos normalizados en cuanto a sus actividades puzolánicas. La calidad de los cementos fabricados resultó adecuada y concordante con la del cemento portland-puzolánico obtenido a escala industrial con los mismos clinker, yeso y puzolana natural de este estudio. Posteriormente, se determinaron las características de los cementos experimentales y se confeccionaron morteros normales para la realización de ensayos físicos y mecánicos. Los resultados de ensayos indicaron que los cementos con adición de cenizas volantes (CCV requieren menos agua para consistencia normal, presentan tiempos de fraguado mayores y expansiones en autoclave menores que los cementos con adición de puzolana (CP. Los calores de hidratación a 7 y 28 días de edad fueron aproximadamente similares para ambos tipos de cemento. En morteros normales, los cementos CCV mostraron menor retracción de secado, mayor retentividad y mayor fluidez (para igual cantidad de agua que los cementos CP. En los ensayos de exudación se observó que ésta depende más de la finura que el tipo de adición. Finalmente, los ensayos mecánicos señalaron que las resistencias a compresión y flexotracción de los morteros con cementos CCV son menores a edades inferiores que 14 días (del orden de 5 a 10% a un día de edad, pero que a partir de entonces pasan a ser mayores que las de

  19. CT of pleural abnormalities

    International Nuclear Information System (INIS)

    Webb, W.R.

    1995-01-01

    Briefly discussed were CT diagnosis of pleural thickening, CT technique for examining the pleura or pleuro-pulmonary disease, diagnosis of pleural collections, diagnosis of pleural fluid abnormalities in patients with pneumonia, pleural neoplasms, malignant (diffuse) mesothelioma, metastases, local fibrous tumor of the pleura (benign mesothelioma) (21 refs.)

  20. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... over time. top of page What are the benefits vs. risks? Benefits CT scanning is painless, noninvasive and accurate. A ... bear denotes child-specific content. Related Articles and Media Radiation Dose in X-Ray and CT Exams ...

  1. Computed Tomography (CT) -- Head

    Medline Plus

    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 ...

  2. Computed Tomography (CT) -- Sinuses

    Medline Plus

    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 ...

  3. Abdominal and Pelvic CT

    Medline Plus

    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 ...

  4. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... CD or DVD. CT images of internal organs, bones, soft tissue and blood vessels provide greater detail than traditional ... advantage of CT is its ability to image bone, soft tissue and blood vessels all at the same time. ...

  5. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... CD or DVD. CT images of internal organs, bones, soft tissue and blood vessels provide greater detail than traditional ... advantage of CT is its ability to image bone, soft tissue and blood vessels all at the same time. ...

  6. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... CD or DVD. CT images of internal organs, bones, soft tissue and blood vessels provide greater detail than traditional ... advantage of CT is its ability to image bone, soft tissue and blood vessels all at the same time. ...

  7. CT of pleural abnormalities

    Energy Technology Data Exchange (ETDEWEB)

    Webb, W R [California Univ., San Francisco, CA (United States). Dept. of Radiology

    1996-12-31

    Briefly discussed were CT diagnosis of pleural thickening, CT technique for examining the pleura or pleuro-pulmonary disease, diagnosis of pleural collections, diagnosis of pleural fluid abnormalities in patients with pneumonia, pleural neoplasms, malignant (diffuse) mesothelioma, metastases, local fibrous tumor of the pleura (benign mesothelioma) (21 refs.).

  8. Tuberculous peritonitis: CT appearance

    International Nuclear Information System (INIS)

    Hanson, R.D.; Hunter, T.B.

    1985-01-01

    Rare, sporadic cases of tuberculous peritonitis do occur in the United States and other advanced countries. Because there are few descriptions of the CT appearance of the peritoneal forms of tuberculous (TB), this report illustrates a case of tuberculous peritonitis with prominent CT findings and discusses the differentiation of this entity from other, more common diseases

  9. CT urography and hematuria

    DEFF Research Database (Denmark)

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

    2015-01-01

    BACKGROUND: Computed tomography (CT) urography is now used in the work-up of patients with hematuria. The dose of contrast medium and radiation varies considerably between the different CT protocols. PURPOSE: To study the disease prevalence in a consecutive group of patients with hematuria...

  10. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... can help plan the safest and most effective surgery. CT of the sinuses is now widely available and is performed in a relatively short time, especially when compared to magnetic resonance imaging (MRI). CT scanning is painless, noninvasive and ...

  11. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... about tumors of the nasal cavity and sinuses. plan for surgery by defining anatomy. top of page How should ... for sinusitis. CT of the sinuses can help plan the safest and most effective surgery. CT of the sinuses is now widely available ...

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

    Medline Plus

    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 ...

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

    Medline Plus

    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 ...

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

    Medline Plus

    Full Text Available ... view of the body's interior. Refinements in detector technology allow new CT scanners to obtain multiple slices in a single rotation. These scanners, called "multislice CT" or "multidetector CT," ...

  15. CT of splenic trauma

    International Nuclear Information System (INIS)

    Griffiths, B.G.; Federle, M.P.; Minagi, H.; Jeffrey, R.B.

    1986-01-01

    Fifty-five consecutive cases of surgically proved splenic injuries were evaluated by CT. CT correctly identified 54 splenic injuries, with one false-negative and three false-positive studies. In the single false-negative study and in two of the three false-positive studies, CT correctly indicated the presence of a large hemoperitoneum and other abdominal visceral lacerations and so correctly indicated the need for surgery. Of the 55 proved cases of splenic injury, CT revealed hemoperitoneum in 54 (99%), perisplenic clot in 47 (85%), splenic laceration in 39 (71%), and subcapsular hematoma in 13 (24%). Perisplenic clot can be distinguished from lysed blood in the peritoneal cavity and is a sensitive and specific sign of splenic trauma, even in the absence of visible splenic laceration. The authors conclude that CT is highly reliable means of evaluating splenic trauma

  16. CT of abdominal abscesses

    International Nuclear Information System (INIS)

    Korobkin, M.T.

    1987-01-01

    The imaging search for a suspected abdominal abscess is common in hospitalized patients, especially after recent abdominal surgery. This paper examines the role of CT in the detection, localization, and treatment of abdominal abscess. The accuracy, limitations, and technical aspects of CT in this clinical setting are discussed. The diagnosis of an abscess is based on the demonstration of a circumscribed abnormal fluid collection. Although percutaneous aspiration with gram stain and culture is usually indicated to differentiate abscess from other fluid collections, the CT-based detection of extraluminal gas bubbles makes the diagnosis of an abscess highly likely. CT is compared with conventional radiographic studies, US, and radio-nuclide imaging. Specific CT and clinical features of abscesses in the following sites are emphasized: subphrenic space, liver, pancreas, kidneys, psoas muscle, appendix, and colonic diverticula. Most abdominal abscesses can be successfully treated with percutaneous drainage techniques. The techniques, results, and limitations of percutaneous abscess drainage are reviewed

  17. CT of tracheal agenesis

    International Nuclear Information System (INIS)

    Strouse, Peter J.; Hernandez, Ramiro J.; Newman, Beverley

    2006-01-01

    Tracheal agenesis is a rare and usually lethal anomaly. In the past, opaque contrast medium was injected via the esophagus to demonstrate the anatomy. To demonstrate the utility of helical and multidetector CT in delineating the aberrant anatomy in newborns with tracheal agenesis. Four newborns with tracheal agenesis were identified from three institutions. Imaging studies and medical records were reviewed. Each child was imaged with chest radiography. One child was imaged on a single-detector helical CT scanner and the other three on multidetector scanners. Helical and multidetector CT with 2D and 3D reconstructions clearly delineated the aberrant tracheobronchial and esophageal anatomy in each infant. Minimum intensity projection reformatted CT images were particularly helpful. One infant each had type I and type II tracheal agenesis. Two infants had type III tracheal agenesis. All four infants died. CT is a useful tool for delineating the aberrant anatomy of newborns with tracheal agenesis and thus helps in making rational clinical decisions. (orig.)

  18. Head trauma and CT

    International Nuclear Information System (INIS)

    Samejima, Kanji; Yoshii, Nobuo; Tobari, Chitoshi

    1979-01-01

    In our cases of acute and subacute subdural hematoma, the use of CT was evaluated. In our department of surgery, acute subdural hematoma was found in 46 of 388 patients of head trauma who underwent CT. Acute subdural hematoma, like epidural hematoma was usually visualized as a high-density area along the cranial inner table, and this was easily differenciated from epidural hematoma because of difference in shape from the other. The picture of acute subdural hematoma was occasionally confused with that of intracerebral hematoma or cerebral contusion. Single use of CT does not differenciate subacute subdural hematoma from chronic subdural hematoma. However, CT usually visualized acute hematoma as a high-density area, showing the extent of hematoma. Comparison of the thickness of hematoma with the axis deviation of the median part such as the 3rd cerebral ventricle suggested severity of cerebral edema. CT also revealed bilateral or multiple lesions of cerebral contusion or intracerebral hematoma. (Ueda, J.)

  19. CT of laryngeal trauma

    International Nuclear Information System (INIS)

    Jeffrey, R.B.

    1986-01-01

    Computed tomography has made a significant contribution to the radiologic assessment of the injured larynx. CT is an accurate, noninvasive modality that can rapidly diagnose both soft tissue and cartilaginous injuries. CT of the larynx involves a minimal degree of patient manipulation and discomfort and can be performed in conjunction with CT evaluation of intracranial or facial injuries. Conventional radiologic studies (anteroposterior and lateral soft tissue films of the neck, tomograms, or xerograms) are capable of demonstrating some cartilaginous fractures but are of limited value in defining the extent of soft tissue injury. In the acute trauma setting, laryngography is often technically difficult to perform because of patient discomfort and inability to cooperate. Although the overall experience is somewhat limited, CT appears to overcome many of the limitations of these conventional radiologic methods. The following is a discussion of the role of CT scanning in evaluating injuries to the larynx and cervical soft tissues

  20. competencia con China

    Directory of Open Access Journals (Sweden)

    Elena de la Paz Hernández Águila

    2007-01-01

    Full Text Available El artículo ofrece un diagnóstico del desempeño de la industria mexicana del calzado desde la década de los ochenta hasta la actualidad. Analiza la problemática que ha enfrentado esta rama industrial a partir del proceso de apertura comercial y de la competencia en su mercado interno con productos provenientes de países asiáticos, particularmente China. Problematiza al respecto los retos y las perspectivas que a mediano plazo enfrentará este sector empresarial y sobre las posibilidades de competir en el mercado globalizado.

  1. Construir con Madera

    OpenAIRE

    Olabe-Velasco, F. (Fermín); Val-Hernández, Y. (Yolanda); Varela-de-la-Cruz, P. (Perla); Cabrero-Ballarín, J.M. (José Manuel)

    2010-01-01

    Guía divulgativa ‘Construir con madera’, elaborada por la Cátedra Madera de la Universidad de Navarra y el Gobierno de Navarra. La publicación pretende explicar de forma sencilla los beneficios y posibilidades de este material en la construcción, tanto en lo que respecta a su resistencia, comportamiento frente al fuego, durabilidad, capacidad de aislamiento, propiedades acústicas, estética, respeto al medio ambiente y sostenibilidad como fuente de energía. A modo de ejemplo, en la ...

  2. Comportamiento de la TSH y la T4 en una cohorte de pacientes con arritmia cardiaca tratados con amiodarona u otros antiarrítmicos Behavior of TSH and T4 in a cohort of patients with cardiac arrhythmia treated with amiodarone or other antiarrhythmics

    Directory of Open Access Journals (Sweden)

    Erwing A Vargas

    2008-08-01

    Full Text Available La amiodarona es uno de los antiarrítmicos de uso más extendido, pero de la misma forma es un medicamento con efectos adversos bien conocidos y a múltiples niveles; uno de los más importantes es el que se describe para el tejido tiroideo. Cerca de 80% de los pacientes que la toman de forma indefinida, presentarán algún efecto adverso; sin embargo, menos de 15% la suspenderán. En la glándula tiroides, los mecanismos de lesión se relacionan, por su semejanza estructural, con la levotiroxina, la liberación de altas concentraciones de yodo y la inducción de reactividad inmune, entre otras. No obstante, la mayoría de los pacientes permanece eutiroideos. Este estudio describe la variación de la función tiroidea a corto plazo, en 77 pacientes que recibieron diferentes tipos de antiarrítmicos, que no tenían factores de riesgo asociados a disfunción tiroidea, y que se reclutaron en el servicio de hospitalización. Se tomaron muestras de TSH al inicio y al cabo de tres meses de seguimiento. Se observaron niveles de TSH normales en 26% (43 pacientes y tendencia a valores más altos en el control al tercer mes en el grupo medicado con amiodarona. De manera adicional, se describió una proporción mayor de trastornos de la función de la glándula tiroides en la población masculina.Aminodarone is one of the most widespread used antiarrhythmics, but in the same way it is a medicine with well known side-effects at multiple levels; one of the most important ones is described for the thyroid tissue. Almost 80% of patients that receive it for an indefinite time will present an adverse effect; nevertheless, only less than 15% will discontinue it. Injury mechanisms are related, because of its structural similitude, to those of levothyroxine, with liberation of high iodine concentrations and induction of immune reactivity, among others. However, most patients remain in euthyrod state. This study describes thyroid function variation at short term in

  3. Entrevista con Giovanni Levi

    Directory of Open Access Journals (Sweden)

    Monica Oliveira

    2017-06-01

    Full Text Available En esta entrevista, Giovanni Levi - como un conocedor del tema de Familia - realiza una importante evaluación sobre el actual estado de las investigaciones realizadas en el Brasil y em el exterior. Con estilo franco, agudo y lucido critica las visiones tradicionales y sus ilusiones ypropone nuevos conceptos y métodos. La historia de la familia debería ceder espacio para el estudio de las redes relacionales o de los mundos relacionales. De la misma forma, la historia cuantitativa debería abrir espacio para el estudio de las cualidades. Ya con relación a la historia de las elites, tan estudiada y reproducida en una diversidad de trabajos, que deberíase mirar en otra perspectiva. Es decir, no mirar a las reglas sociales predeterminadas, sino a los desvíos y a las variaciones. Levi defiende que los historiadores deben trascender a los documentos que se encuentran fácilmente y que pueden fortalecer perspectivas deformadas y esequilibradas de la sociedad. Para él, los historiadores deben esforzarse por estudiar a aquellos grupos que dejaron pocos rastros documentales. En ese esfuerzo existiría una nueva mirada sobre la historia de la familia.

  4. Entrevista con Patricia Ariza

    Directory of Open Access Journals (Sweden)

    Esperanza Londoño La Rotta

    2017-01-01

    Full Text Available Pensamiento, Palabra y Obra entrevista a una artista, feminista y activista política, quien como mujer y artista ha permitido pensar el arte más allá de un simple espectáculo. Toda una vida dedicada al teatro y a darle voz, a través de sus obras, a víctimas del conflicto colombiano, defensora de derechos humanos; además de hacer evidente en su vida y a través de la plataforma “Artistas por la paz”, las múltiples relaciones que se pueden establecer entre el arte, la construcción de paz y la resolución de conflictos. Hablamos en su casa, en medio del calor de la bienvenida con Patricia Ariza, directora del festival alternativo de teatro, de Mujeres en Escena y de la Corporación Colombiana de Teatro, entre otras muchas actividades que voluntariamente su espíritu libertario ha asumido. Esta entrevista se realizó antes del 2 de octubre, pero con la revisión de los acuerdos que propició el plebiscito ganado por una ínfima minoría por el no, sigue siendo vigente este planteamiento.

  5. CT after transsphenoidal surgery

    International Nuclear Information System (INIS)

    Tazawa, Satoru

    1991-01-01

    Two hundred and ten CT studies of 95 patients after transsphenoidal surgery were reviewed. Spheno-ethmoid opacificaiton, intrasellar hematoma and gas bubbles were noted within 2 weeks after surgery. Bone defect of the sellar floor and bone stent were seen on coronal scans in most cases. The packing material frequently disappeared on follow-up studies. Hormonal assessment of the functioning tumor, according to which the effect of treatment was evaluated, was correlated with CT findings. Because differentiation between postoperative changes and residual mass was difficult, there was no definite CT criteria to indicate residual functioning tumor except upward convexity of the diaphragma sellae on CT more than 3 months after surgery. Initial follow up CT study is recommended to be performed at about 3 months after surgery, at which time the immediate postoperative inflammatory changes have been disappeared. The incidence of recurrence was 3/47 (6%), which was shown on follow-up CT from 4 to 10 years after surgery. Therefore, subsequent CT study should be done in every year or two, taking the clinical symptoms and hormonal data into consideration. (author)

  6. CT of the heart

    International Nuclear Information System (INIS)

    Lipton, M.J.

    1986-01-01

    Advances based upon the detector elements instead of X-ray film have greatly increased the power of X-ray imaging. Computed tomography (CT) creates cross sectional rather than projected images. Recently, high speed CT devices have been developed for cardiovascular studies. The Cine-CT scanner employs a scanning electron beam deflected on an extended tungsten target ring. Fast scans of 50 millisecond exposures at multiple levels can provide information concerning blood flow in vessels and tissues, myocardial wall motion, valve integrity, coronary bypass graft patency and proximal coronary artery anatomy. Cine-CT dynamic scanning can also provide volume imaging with small quantities (0.05 - 1.5 ml/kg) of contrast medium administered via peripheral vein injections. Cine-CT provides simultaneous measurements of cardiac dimensions and function and is rapidly becoming a new tool for quantitating myocardial blood flow, cardiac chamber volumes and wall mechanics. The future outlook is very promising for this three-dimensional cine-CT technique with high spatial resolution. High speed CT should provide unique diagnostic information and as the technology continues to improve at a rapid speed, this new imaging modality could be a challenge for angiography. (Auth.)

  7. CT after transsphenoidal surgery

    Energy Technology Data Exchange (ETDEWEB)

    Tazawa, Satoru [Tohoku Univ., Sendai (Japan). School of Medicine

    1991-03-01

    Two hundred and ten CT studies of 95 patients after transsphenoidal surgery were reviewed. Spheno-ethmoid opacificaiton, intrasellar hematoma and gas bubbles were noted within 2 weeks after surgery. Bone defect of the sellar floor and bone stent were seen on coronal scans in most cases. The packing material frequently disappeared on follow-up studies. Hormonal assessment of the functioning tumor, according to which the effect of treatment was evaluated, was correlated with CT findings. Because differentiation between postoperative changes and residual mass was difficult, there was no definite CT criteria to indicate residual functioning tumor except upward convexity of the diaphragma sellae on CT more than 3 months after surgery. Initial follow up CT study is recommended to be performed at about 3 months after surgery, at which time the immediate postoperative inflammatory changes have been disappeared. The incidence of recurrence was 3/47 (6%), which was shown on follow-up CT from 4 to 10 years after surgery. Therefore, subsequent CT study should be done in every year or two, taking the clinical symptoms and hormonal data into consideration. (author).

  8. CT pelvimetry. La scanopelvimetrie

    Energy Technology Data Exchange (ETDEWEB)

    Vicens, J.L.; Charles, G.; Le Berre, J.; Flageat, J. (Hopital d' Instruction des Armees Begin, 94 - Saint-Mande (FR))

    1989-01-01

    Pelvimetry aims at providing the obstetrician with information on the size and morphology of the female pelvis, thus enabling him to assess the obstetrical prognosis as accurately as possible. Computed tomography (CT) has several advantages, in particular the lower mother and fetus radiation dose. After a brief description of obstetrical anatomy, the usual CT exploration method is presented and its results are considered in terms of measurements, indices and morphological findings. If performed with a very strict exploration procedure, CT pelvimetry is a very reliable, fact and comfortable method of examination. All these advantages, combined with the minimized patient dose, should lead to an increasingly widespread use of this technique.

  9. CT of chest trauma

    International Nuclear Information System (INIS)

    Goodman, P.C.

    1986-01-01

    There appears to be a limited role for computed tomography in the evaluation of chest trauma. The literature contains few papers specifically addressing the use of CT in the setting of chest trauma. Another series of articles relates anecdotal experiences in this regard. This paucity of reports attests to the remarkable amount of information present on conventional chest radiographs as well as the lack of clear indications for CT in the setting of chest trauma. In this chapter traumatic lesions of various areas of the thorax are discussed. The conventional radiographic findings are briefly described and the potential or proven application of CT is addressed

  10. NMR-CT scanner

    International Nuclear Information System (INIS)

    Kose, Katsumi; Sato, Kozo; Sugimoto, Hiroshi; Sato, Masataka.

    1983-01-01

    A brief explanation is made on the imaging methods for a practical diagnostic NMR-CT scanner : A whole-body NMR-CT scanner utilizing a resistive magnet has been developed by Toshiba in cooperation with the Institute for Solid State Physics, the University of Tokyo. Typical NMR-CT images of volunteers and patients obtained in the clinical experiments using this device are presented. Detailed specifications are also shown about the practical NMR-CTs which are to be put on the market after obtaining the government approval. (author)

  11. Dual energy cardiac CT.

    Science.gov (United States)

    Carrascosa, Patricia; Deviggiano, Alejandro; Rodriguez-Granillo, Gastón

    2017-06-01

    Conventional single energy CT suffers from technical limitations related to the polychromatic nature of X-rays. Dual energy cardiac CT (DECT) shows promise to attenuate and even overcome some of these limitations, and might broaden the scope of patients eligible for cardiac CT towards the inclusion of higher risk patients. This might be achieved as a result of both safety (contrast reduction) and physiopathological (myocardial perfusion and characterization) issues. In this article, we will review the main clinical cardiac applications of DECT, that can be summarized in two core aspects: coronary artery evaluation, and myocardial evaluation.

  12. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... of any kind, unlike MRI. CT imaging provides real-time imaging, making it a good tool for guiding ... information is needed to determine the extent of soft tissue of the tumor, magnetic resonance imaging (MRI) ...

  13. 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 ...

  14. Computed Tomography (CT) -- Sinuses

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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 ...

  15. 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 ...

  16. Abdominal and Pelvic CT

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    Full Text Available ... wear during the procedure. Metal objects, including jewelry, eyeglasses, dentures and hairpins, may affect the CT images ... and treatments have special pediatric considerations. The teddy bear denotes child-specific content. Related Articles and Media ...

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    Full Text Available ... wear during the procedure. Metal objects, including jewelry, eyeglasses, dentures and hairpins, may affect the CT images ... and treatments have special pediatric considerations. The teddy bear denotes child-specific content. Related Articles and Media ...

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    Full Text Available ... wear during the procedure. Metal objects, including jewelry, eyeglasses, dentures and hairpins, may affect the CT images ... and treatments have special pediatric considerations. The teddy bear denotes child-specific content. Related Articles and Media ...

  19. Computed Tomography (CT) -- Head

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    Full Text Available ... that lasts for at most a minute or two. You may experience a sensation like you have ... CT scanning provides very detailed images of many types of tissue as well as the lungs, bones, ...

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  1. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... emergency cases, it can reveal internal injuries and bleeding quickly enough to help save lives. Tell your ... emergency cases, they can reveal internal injuries and bleeding quickly enough to help save lives. CT has ...

  8. CT diagnosis of hepatoma

    Energy Technology Data Exchange (ETDEWEB)

    Itai, Yuji [Tokyo Univ. (Japan). Faculty of Medicine

    1982-04-01

    In hepatocellular carcinoma, present status of CT diagnosis was discussed. Hepatocellular carcinoma is sometimes imaged in same concentration as that of surrounding tissues, and the detection rate ranged from 79 to 94%. The rate of differential diagnosis between primary and metastatic carcinoma was only 83% (includes 22% of false diagnosis) using contrast enhancement. The rates of detection of hepatocellular carcinoma and metastatic one were also only 87% and 75%, respectively, even by the combined use of arterial infusion CT and dynamic CT. However, the CT images is reproducible, and is supplemented by the information of US. Thus, the combination of these methods is useful in diagnosing the presence, extension, and nature of liver carcinoma.

  9. Computed Tomography (CT) -- Sinuses

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  10. Abdominal and Pelvic CT

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  11. Computed Tomography (CT) -- Head

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    Full Text Available ... its ability to image bone, soft tissue and blood vessels all at the same time. Unlike conventional x-rays, CT scanning provides very detailed images of many types of tissue as well as the lungs, bones, ...

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    Full Text Available ... its ability to image bone, soft tissue and blood vessels all at the same time. Unlike conventional x-rays, CT scanning provides very detailed images of many types of tissue as well as the lungs, bones, ...

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  14. Abdominal and Pelvic CT

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    Full Text Available ... as: infections such as appendicitis , pyelonephritis or infected fluid collections, also known as abscesses. inflammatory bowel disease ... caused by a burst appendix or an infected fluid collection and the subsequent spread of infection. 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. ...

  16. 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.

  17. Computed Tomography (CT) -- Head

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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. ...

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  1. Heart CT scan

    Science.gov (United States)

    ... make to decrease the risk of heart disease. Risks Risks of CT scans include: Being exposed to ... urac.org). URAC's accreditation program is an independent audit to verify that A.D.A.M. follows ...

  2. Abdominal and Pelvic CT

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    Full Text Available ... the examination table will move during the scan, so that the x-ray beam follows a spiral ... and additional view capabilities. Modern CT scanners are so fast that they can scan through large sections ...

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    Full Text Available ... the examination table will move during the scan, so that the x-ray beam follows a spiral ... and additional view capabilities. Modern CT scanners are so fast that they can scan through large sections ...

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    Full Text Available ... the examination table will move during the scan, so that the x-ray beam follows a spiral ... and additional view capabilities. Modern CT scanners are so fast that they can scan through large sections ...

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    Full Text Available ... Radiation Therapy for Bladder Cancer Radiation Therapy for Colorectal Cancer top of page This page was reviewed on ... GI Tract X-ray (Radiography) - Upper GI Tract Colorectal Cancer Images related to Computed Tomography (CT) - Abdomen and ...

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    Full Text Available ... should always inform their physician and the CT technologist if there is any possibility that they may ... located in a separate control room, where the technologist operates the scanner and monitors your examination in ...

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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 ...

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    Full Text Available ... 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 and Nuclear Medicine Radiation ...

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    Full Text Available ... When the image slices are reassembled by computer software, the result is a very detailed multidimensional view ... accurate. A major advantage of CT is its ability to image bone, soft tissue and blood vessels ...

  13. Abdominal and Pelvic CT

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    Full Text Available ... When the image slices are reassembled by computer software, the result is a very detailed multidimensional view ... accurate. A major advantage of CT is its ability to image bone, soft tissue and blood vessels ...

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    Full Text Available ... When the image slices are reassembled by computer software, the result is a very detailed multidimensional view ... accurate. A major advantage of CT is its ability to image bone, soft tissue and blood vessels ...

  15. 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 ... of the Sinuses? CT is usually the first test ordered when a sinus tumor is suspected. If ...

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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 ...

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  18. 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 ... at these links. About Us | Contact Us | FAQ | Privacy | Terms of Use | Links | Site Map Copyright © 2018 ...

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  1. Abdominal and Pelvic CT

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    Full Text Available ... special computer program processes this large volume of data to create two-dimensional cross-sectional images of your body, which are then displayed on a monitor. CT imaging is sometimes compared to looking into ...

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  9. 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 ...

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  12. Computed Tomography (CT) -- Head

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    Full Text Available ... medically necessary because of potential risk to the baby. This risk is, however, minimal with head CT ... intravenous contrast indicate mothers should not breastfeed their babies for 24-48 hours after contrast medium is ...

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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 ... the extent of soft tissue of the tumor, magnetic resonance imaging (MRI) may be helpful. A person who ...

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    Full Text Available ... 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 of an accurate ...

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    Full Text Available ... 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 of an accurate ...

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    Full Text Available ... 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 of an accurate ...

  18. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... 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 ...

  19. Computed Tomography (CT) -- Head

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    Full Text Available ... brain cancer. In emergency cases, it can reveal internal injuries and bleeding quickly enough to help save ... to a CD or DVD. CT images of internal organs, bones, soft tissue and blood vessels provide ...

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  13. Computed Tomography (CT) -- Head

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    Full Text Available ... top of page Additional Information and Resources RTAnswers.org Radiation Therapy for Brain Tumors Radiation Therapy for ... Tomography (CT) - Head Sponsored by Please note RadiologyInfo.org is not a medical facility. Please contact your ...

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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 ... a few seconds, and even faster in small children. Such speed is beneficial for all patients but ...

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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 ... a few seconds, and even faster in small children. Such speed is beneficial for all patients but ...

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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 ... a few seconds, and even faster in small children. Such speed is beneficial for all patients but ...

  18. Computed Tomography (CT) -- Head

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    Full Text Available ... tissue damage in patients with facial trauma, and planning surgical reconstruction. diagnose diseases of the temporal bone ... CT scanning may eliminate the need for exploratory surgery and surgical biopsy. No radiation remains in a ...

  19. Computed Tomography (CT) -- Head

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    Full Text Available ... of the Head? Computed tomography, more commonly known as a CT or CAT scan, is a diagnostic ... white on the x-ray; soft tissue, such as organs like the heart or liver, shows up ...

  20. Computed Tomography (CT) -- Sinuses

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  1. Abdominal and Pelvic CT

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    Full Text Available ... the Abdomen/Pelvis? Computed tomography, more commonly known as a CT or CAT scan, is a diagnostic ... the internal organs, small bowel and colon, such as: infections such as appendicitis , pyelonephritis or infected fluid ...

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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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  5. 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 ... deal with them. Manufacturers of intravenous contrast indicate mothers should not breastfeed their babies for 24-48 ...

  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 ... in the womb. Manufacturers of intravenous contrast indicate mothers should not breastfeed their babies for 24-48 ...

  7. 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 ...

  8. 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 ...

  9. Computed Tomography (CT) -- Head

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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, ...

  10. Computed Tomography (CT) -- Head

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    Full Text Available ... images can be viewed on a computer monitor, printed on film or transferred to a CD or DVD. CT images of internal organs, bones, soft tissue and blood vessels provide greater detail ...

  11. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... images can be viewed on a computer monitor, printed on film or transferred to a CD or DVD. CT images of internal organs, bones, soft tissue and blood vessels provide greater detail ...

  12. Abdominal and Pelvic CT

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    Full Text Available ... images can be viewed on a computer monitor, printed on film or transferred to a CD or DVD. CT images of internal organs, bones, soft tissue and blood vessels provide greater detail ...

  13. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... openings. top of page What are some common uses of the procedure? CT of the sinuses is ... is done because a potential abnormality needs further evaluation with additional views or a special imaging technique. ...

  14. Abdominal and Pelvic CT

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    Full Text Available ... or anxious or have chronic pain, you may find a CT exam to be stressful. The technologist ... If the contrast material is swallowed, you may find the taste mildly unpleasant; however, most patients can ...

  15. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... are claustrophobic, or have chronic pain, you may find a CT exam to be stressful. The technologist ... 30, 2018 Send us your feedback Did you find the information you were looking for? Yes No ...

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    Full Text Available ... are claustrophobic or have chronic pain, you may find a CT exam to be stressful. The technologist ... 08, 2016 Send us your feedback Did you find the information you were looking for? Yes No ...

  17. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... cavity. CT scanning is painless, noninvasive and accurate. It’s also the most reliable imaging technique for determining ... parts absorb the x-rays in varying degrees. It is this crucial difference in absorption that allows ...

  18. 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 of the brain or other tissues. guide the ...

  19. 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 ... Risks There is always a slight chance of cancer from excessive exposure to radiation. However, the benefit ...

  20. Computed Tomography (CT) -- Head

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    Full Text Available ... rays). top of page What are some common uses of the procedure? CT scanning of the head ... is done because a potential abnormality needs further evaluation with additional views or a special imaging technique. ...

  1. Computed Tomography (CT) -- Head

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    Full Text Available ... therapy for brain cancer. In emergency cases, it can reveal internal injuries and bleeding quickly enough to ... cross-sectional images generated during a CT scan can be reformatted in multiple planes, and can even ...

  2. Abdominal and Pelvic CT

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    Full Text Available ... painless, noninvasive and accurate. In emergency cases, it can reveal internal injuries and bleeding quickly enough to ... cross-sectional images generated during a CT scan can be reformatted in multiple planes, and can even ...

  3. Abdominal and Pelvic CT

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    Full Text Available ... entire body will be "inside" the scanner at one time such as with MRI. If an intravenous ... CT scanning provides very detailed images of many types of tissue as well as the lungs, bones, ...

  4. Abdominal and Pelvic CT

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    Full Text Available ... infections such as appendicitis , pyelonephritis or infected fluid collections, also known as abscesses. inflammatory bowel disease such ... by a burst appendix or an infected fluid collection and the subsequent spread of infection. CT scanning ...

  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 ... very much like other x-ray examinations. Different body parts absorb the x-rays in varying degrees. ...

  6. 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 ... very much like other x-ray examinations. Different body parts absorb the x-rays in varying degrees. ...

  7. 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 ... very much like other x-ray examinations. Different body parts absorb the x-rays in varying degrees. ...

  8. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... quickly. When you enter the CT scanner, special light lines may be seen projected onto your body, ... its ability to image bone, soft tissue and blood vessels all at the same time. Unlike conventional ...

  9. Computed Tomography (CT) -- Head

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    Full Text Available ... quickly. When you enter the CT scanner, special light lines may be seen projected onto your body, ... its ability to image bone, soft tissue and blood vessels all at the same time. Unlike conventional ...

  10. Abdominal and Pelvic CT

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    Full Text Available ... intravenously (injected into a vein) to help evaluate blood vessels and organs such as the liver, kidneys and pancreas. When you enter the CT scanner, special light lines may be seen projected onto your body, ...

  11. Abdominal and Pelvic CT

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    Full Text Available ... preferable over CT scanning. top of page Additional Information and Resources RTAnswers.org: Radiation Therapy for Bladder ... Send us your feedback Did you find the information you were looking for? Yes No Please type ...

  12. Abdominal and Pelvic CT

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    Full Text Available ... for tumors as well as monitor response to chemotherapy. top of page How should I prepare? You ... over time. top of page What are the benefits vs. risks? Benefits Viewing a CT scan, an ...

  13. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... that are filled with fluid or thickened sinus membranes . detect the presence of inflammatory diseases. provide additional ... over time. top of page What are the benefits vs. risks? Benefits A CT scan is one ...

  14. Computed Tomography (CT) -- Head

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    Full Text Available ... rays). top of page What are some common uses of the procedure? CT scanning of the head ... community, you can search the ACR-accredited facilities database . This website does not provide cost information. The ...

  15. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... openings. top of page What are some common uses of the procedure? CT of the sinuses is ... community, you can search the ACR-accredited facilities database . This website does not provide cost information. The ...

  16. Abdominal and Pelvic CT

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    Full Text Available ... 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 bras containing metal ...

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    Full Text Available ... 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 bras containing metal ...

  18. Computed Tomography (CT) -- Head

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    Full Text Available ... 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 bras containing metal ...

  19. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... may increase the risk of an unusual adverse effect. Women should always inform their physician and the ... to urinate; however, this is actually a contrast effect and subsides quickly. When you enter the CT ...

  20. Computed Tomography (CT) -- Head

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    Full Text Available ... may increase the risk of an unusual adverse effect. The radiologist also should know if you have ... to urinate; however, this is actually a contrast effect and subsides quickly. When you enter the CT ...

  1. Computed Tomography (CT) -- Head

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    Full Text Available ... a very detailed multidimensional view of the body's interior. Refinements in detector technology allow nearly all CT ... a few seconds, and even faster in small children. Such speed is beneficial for all patients but ...

  2. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... a very detailed multidimensional view of the body's interior. Refinements in detector technology allow nearly all CT ... a few seconds, and even faster in small children. Such speed is beneficial for all patients but ...

  3. Abdominal and Pelvic CT

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    Full Text Available ... a very detailed multidimensional view of the body's interior. Refinements in detector technology allow nearly all CT ... a few seconds, and even faster in small children. Such speed is beneficial for all patients but ...

  4. 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 ... can be performed if you have an implanted medical device of any kind, unlike MRI. A diagnosis ...

  5. CT angiography - chest

    Science.gov (United States)

    ... your provider if you take the diabetes medication metformin (Glucophage). You may need to take extra precautions. ... Damage to kidneys from contrast dye CT scans use more radiation than regular x-rays. Having many ...

  6. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... have a known allergy to contrast material, or "dye," your doctor may prescribe medications (usually a steroid) ... like? The CT scanner is typically a large, box-like machine with a hole, or short tunnel, ...

  7. Abdominal and Pelvic CT

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    Full Text Available ... have a known allergy to contrast material, or "dye," your doctor may prescribe medications (usually a steroid) ... like? The CT scanner is typically a large, box-like machine with a hole, or short tunnel, ...

  8. Computed Tomography (CT) -- Head

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    Full Text Available ... have a known allergy to contrast material, or "dye," your doctor may prescribe medications (usually a steroid) ... like? The CT scanner is typically a large, box-like machine with a hole, or short tunnel, ...

  9. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... up in shades of gray, and air appears black. With CT scanning, numerous x-ray beams and ... Safety page for more information about radiation dose. Women should always inform their physician and x-ray ...

  10. Abdominal and Pelvic CT

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    Full Text Available ... up in shades of gray, and air appears black. With CT scanning, numerous x-ray beams and ... Safety page for more information about radiation dose. Women should always inform their physician and x-ray ...

  11. Computed Tomography (CT) -- Head

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    Full Text Available ... up in shades of gray, and air appears black. With CT scanning, numerous x-ray beams and ... Safety page for more information about radiation dose. Women should always inform their physician and x-ray ...

  12. Abdominal and Pelvic CT

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    Full Text Available ... 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 bras containing ...

  13. Computed Tomography (CT) -- Head

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    Full Text Available ... 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 bras containing ...

  14. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... 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 bras containing ...

  15. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... blood vessels. If contrast material is required, 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 ...

  16. 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 ... American College of Radiology (ACR) and the European Society of Urogenital Radiology note that the available data ...

  17. 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 ... American College of Radiology (ACR) and the European Society of Urogenital Radiology note that the available data ...

  18. 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 ... American College of Radiology (ACR) and the European Society of Urogenital Radiology note that the available data ...

  19. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... you have a history of heart disease, asthma, diabetes, kidney disease or thyroid problems. Any of these ... 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 ... you have a history of heart disease, asthma, diabetes, kidney disease or thyroid problems. Any of these ... allows the body parts to be distinguished from one another on an x-ray film or CT ...

  1. Abdominal and Pelvic CT

    Science.gov (United States)

    ... a CT scan can be reformatted in multiple planes, and can even generate three-dimensional images. These ... other medical conditions and whether you have a history of heart disease, asthma, diabetes, kidney disease or ...

  2. Computed Tomography (CT) -- Head

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    Full Text Available ... a CT scan can be reformatted in multiple planes, and can even generate three-dimensional images. These ... other medical conditions and whether you have a history of heart disease, asthma, diabetes, kidney disease or ...

  3. Body CT (CAT Scan)

    Science.gov (United States)

    ... a CT scan can be reformatted in multiple planes, and can even generate three-dimensional images. These ... other medical conditions and whether you have a history of heart disease, asthma, diabetes, kidney disease or ...

  4. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... a CT scan can be reformatted in multiple planes, and can even generate three-dimensional images. These ... other medical conditions and whether you have a history of heart disease, asthma, diabetes, kidney disease or ...

  5. Abdominal and Pelvic CT

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    Full Text Available ... a CT scan can be reformatted in multiple planes, and can even generate three-dimensional images. These ... other medical conditions and whether you have a history of heart disease, asthma, diabetes, kidney disease or ...

  6. Computed Tomography (CT) -- Sinuses

    Science.gov (United States)

    ... a CT scan can be reformatted in multiple planes, and can even generate three-dimensional images. These ... other medical conditions and whether you have a history of heart disease, asthma, diabetes, kidney disease or ...

  7. Computed Tomography (CT) -- Head

    Science.gov (United States)

    ... a CT scan can be reformatted in multiple planes, and can even generate three-dimensional images. These ... other medical conditions and whether you have a history of heart disease, asthma, diabetes, kidney disease or ...

  8. Computed Tomography (CT) -- Sinuses

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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 ... cancer from excessive exposure to radiation. However, the benefit of an accurate diagnosis far outweighs the risk. ...

  9. 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 ... cancer from excessive exposure to radiation. However, the benefit of an accurate diagnosis far outweighs the risk. ...

  10. Abdominal and Pelvic CT

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    Full Text Available ... over time. top of page What are the benefits vs. risks? Benefits Viewing a CT scan, an experienced radiologist can ... cancer from excessive exposure to radiation. However, the benefit of an accurate diagnosis far outweighs the risk. ...

  11. Computed Tomography (CT) -- Head

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    Full Text Available ... hours prior to your exam. Leave jewelry at home and wear loose, comfortable clothing. You may be ... the CT images and should be left at home or removed prior to your exam. You may ...

  12. Abdominal and Pelvic CT

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    Full Text Available ... hours prior to your exam. Leave jewelry at home and wear loose, comfortable clothing. You may be ... the CT images and should be left at home or removed prior to your exam. You may ...

  13. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... hours prior to your exam. Leave jewelry at home and wear loose, comfortable clothing. You may be ... the CT images and should be left at home or removed prior to your exam. You may ...

  14. Computed Tomography (CT) -- Sinuses

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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, ...

  15. 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, air-filled spaces within the bones of the face surrounding the ...

  16. Abdominal and Pelvic CT

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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, ...

  17. 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 ...

  18. Abdominal and Pelvic CT

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    Full Text Available ... scanning is painless, noninvasive and accurate. A major advantage of CT is its ability to image bone, ... us improve RadiologyInfo.org by taking our brief survey: Survey Do you have a personal story about ...

  19. Computed Tomography (CT) -- Head

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    Full Text Available ... scanning is painless, noninvasive and accurate. A major advantage of CT is its ability to image bone, ... us improve RadiologyInfo.org by taking our brief survey: Survey Do you have a personal story about ...

  20. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... scanning is painless, noninvasive and accurate. A major advantage of CT is its ability to image bone, ... us improve RadiologyInfo.org by taking our brief survey: Survey Do you have a personal story about ...

  1. 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 ...

  2. preescolares desnutridos con madres con obesidad y sin obesidad

    Directory of Open Access Journals (Sweden)

    Viridiana Vanessa Conzuelo-González

    2009-01-01

    Full Text Available El primer objetivo fue conocer cuántos menores de cinco años con diferentes grados de desnutrición tienen una madre con sobrepeso/obesidad/ en una comunidad indígena que vive en extrema pobreza y bajo condiciones de migración masculina internacional. El segundo fue comparar tres variables socionutricionales (ingreso familiar, educación de la madre y adecuación nutrimental de la dieta diaria entre estos hogares y los hogares con desnutrición infantil y madres sin obesidad. Se realizó un estudio transversal (2006-2007, en la comunidad mazahua de San Francisco Tepeolulco, Municipio de Temascalcingo; que incluyó a 85 hogares integrados por preescolares con desnutrición inscritos al programa Oportunidades. Se determinó el estado nutrición de los preescolares con indicadores antropométricos y se obtuvo el IMC de las madres de estos infantes. Se aplicó una encuesta socionutricional, incluida el recordatorio de 24 horas, y complementado con la observación participante (cualitativa. Se encontró que 83% de las madres mazahuas presentaron sobrepeso u obesidad. El estado de nutrición de los preescolares con madres con obesidad presentó un porcentaje mayor de desnutrición (76%. En la variable género, se encontró que 54% de los niños con madres con obesidad tenía baja talla. Al relacionar el nivel educativo de la madre, esta variable resultó ser estadísticamente significativa (p=0.015, donde el analfabetismo está más relacionado con la desnutrición infantil que tienen madres de bajo y/o peso normal. La elevada prevalencia de hogares conformados con preescolares con desnutrición y madres con obesidad, es un síntoma más de la pobreza en zonas indígenas en México, con bajo índice de desarrollo humano.

  3. CT of abdominal tumor

    International Nuclear Information System (INIS)

    Endo, Satoshi; Yamada, Kenji; Ito, Masatoshi; Ito, Hisao; Yamaura, Harutsugu

    1981-01-01

    CT findings in 33 patients who had an abdominal tumor were evaluated. CT revealed a tumor in 31 cases. The organ from which the tumor originated was correctly diagnosed in 18 patients. Whether the tumor was solid or cystic was correctly predicted in 28 patients. The diagnosis malignant or benign nature of tumor was correct, incorrect and impossible, in 23, 3, and five patiens, respectively. (Kondo, M.)

  4. Anticuerpos anti 21 hidroxilasa séricos en pacientes con anticuerpos antifracción microsomal: Síndrome poliendocrino autoinmune Seric 21- hydroxilase antibodies in patients with anti-microsomal fraction antibodies: Autoimmune polyendocrine syndrome

    Directory of Open Access Journals (Sweden)

    Silvia Botta

    2007-04-01

    Full Text Available El síndrome poliendocrino autoinmune (SPA es la asociación de enfermedades endocrinas autoinmunes con otros desórdenes autoinmunes no endocrinos. Los tipos 1, 2 y 4 presentan adrenalitis autoinmune, esto indica la presencia de autoanticuerpos, y su marcador serológico específico es el anti 21 hidroxilasa (a21-OH. El SPA tipo 2 es la asociación de adrenalitis, enfermedad tiroidea y/o diabetes mellitus inducidas por autoanticuerpos. Como componentes menores, pueden estar asociados entre otros, vitiligo, alopecia y miastenia. Nuestros objetivos fueron: establecer la prevalencia de a21-OH séricos en pacientes con anticuerpos anti fracción microsomal (AFM positivos, enfermedad tiroidea autoinmune y/o afecciones endocrinas y no endocrinas autoinmunes; diagnosticar formas incompletas de SPA y estudiar individuos con probable riesgo de progresión a un SPA completo. Estudiamos 72 pacientes AFM positivos y 60 sujetos tomados como grupo control, AFM negativos. Hallamos a21-OH elevados en dos pacientes: A= 47 U/ml, hipotiroidismo autoinmune y miastenia; y B= 8.75 U/ml, hipotiroidismo autoinmune y vitiligo; ambos con ausencia de insuficiencia adrenal. La prevalencia de a21-OH encontrada fue del 2.8%. Las pacientes A y B corresponden a un SPA tipo 2 incompleto y latente en relación al componente adrenal. Considerando a los a21-OH marcadores de enfermedad autoinmune latente, el eventual riesgo de evolución hacia la afección clínica sugiere la necesidad de estrechos controles clínicos y bioquímicos periódicos.Autoimmune polyendocrine syndrome (APS is the association of autoimmune endocrine diseases, with other autoimmune nonendocrine disorders. APS types 1, 2 and 4 include autoimmune adrenalitis; this suggests the presence of autoantibodies. A specific serological marker for these is the anti 21- hydroxilase autoantibody (a21-OH. APS type 2 is the association of autoimmune adrenalitis, to autoimmune thyroid disease and/or diabetes mellitus, all

  5. CT of hepatocellular carcinoma

    Energy Technology Data Exchange (ETDEWEB)

    Nakamura, H; Tanaka, T; Sai, H; Kawamoto, S; Morimoto, K [Osaka Univ. (Japan). Faculty of Medicine

    1982-06-01

    CT was investigated in 125 cases of hepatocelluar carcinoma and 47 cases of metastatic hepatic neoplasm. The entire contour of each tumor was traced and the average CT value in the tumor was estimated. As a result, the CT value for hepatocellular carcinoma tended to be higher on plain CT and also after contrast enhancement. The CT findings seen frequently were as follows: capsule in 76 cases (60.8%) and septum in 67 cases (53.6%); tumor thrombus in portal vein in 39 cases (31.2%) and that in inferior vena cava in 3 cases (2.4%); localized enlargement of hepatic bile duct in 24 cases (19.2%). These findings were rarely seen in the cases of metastatic hepatic neoplasm. As a relatively outstanding feature of hepatic metastases, a double contour, like concentric circles or contour lines, with a relatively large inner circle or contour line, was found in 21 cases (44.7%). By paying attention to the change of CT value on contrast enhancement and the characteristic image of each case, hepatocellular carcinoma could be differentiated from metastatic hepatic neoplasm with high probability.

  6. Pediatric CT angiography

    International Nuclear Information System (INIS)

    Siegel, M.J.

    2005-01-01

    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.)

  7. CT-Urography

    International Nuclear Information System (INIS)

    Dalla Palma, Ludovico; Grotto, Maurizio; Morra, Aldo

    2005-01-01

    In this paper we present an overview of CT-Urography. With the advent of multislice CT scanners and the evolution of image processing methods this technique now affords optimal urographic images comparable to those obtained with conventional techniques. We describe the acquisition techniques and protocols used by the various authors. Effective radiation dose has conditioned the use of CT-Urography so that the tendency today is to reduce the number of scans by performing, after the non enhanced scan, a single contrast-enhanced scan comprising both the nephrographic and urographic phase. With the use of multislice CT the quality of the urogram improves with the number of slices. We illustrate a variety of processing techniques, multiplanar reconstruction (MPR), maximum (MIP) and average intensity projection (AIP) and volume rendering (VR) and present a series of upper urinary tract tumours testifying to the superiority of the AIP technique over MIP. We then review the results of comparative studies of CT-Urography with conventional urography in upper urinary tract diagnostics. Finally, we describe the advantages and limitations of CT-Urography [it

  8. Head trauma and CT

    International Nuclear Information System (INIS)

    Samejima, Kanji; Yoshii, Nobuo; Tobari, Chitoshi

    1979-01-01

    It has been said that chronic subdural hematoma cannot be diagnosed by CT. In our cases, CT was used, and the results were described. According to the density of the picture, CT findings of chronic subdural hematoma could be classified into 3 types, those of higher density than that of the cerebral paranchyma, those of isodensity, and those of lower density than that of the cerebral parenchyma. The difference among them appeared to be due to variation in the fluid in hematoma, especially that in hemoglobin concentration. Chronic subdural hematoma was found in 27 of 388 cases of head trauma in which CT was undertaken in our department of surgery for last 2 years. It is difficult to differenciate this disease from subdural edema or subarachnoideal retention of the cerebrospinal fluid. In many cases, use of contrast medium added no change to the CT picture. Cerebral angiography is necessary for definite diagnosis of the disease. Chronic subdural hematoma gives more varieties of findings than other intracranial hematomas. However, if the film is very carefully read, CT is still useful for diagnosing this disease in spite of initially remarked difficulties. (Ueda, J.)

  9. autorregulado con estudiantes universitarios

    Directory of Open Access Journals (Sweden)

    Jairo Andrés Montes

    2005-01-01

    Full Text Available El propósito del presente estudio es describir la forma en la que se presentan los procesos de aprendizaje autorregulado con un grupo de estudiantes (22 estudiantes de tercer semestre de Psicología de la PUJ, Cali, en el evento de preparación para la presentación un examen. Asimismo se describen las correlaciones que ocurren entre las distintas fases de dicho proceso de autorregulación del aprendizaje. Para conseguir los objetivos propuestos se ha hecho uso de una observación de desempeño en tiempo real, es decir, de la observación durante una sesión de preparación de examen de los estudiantes, en la cual se emplearon protocolos verbales para dar cuenta de lo que «pasaba por su mente» mientras estudiaban. Una entrevista semi-estructurada y una prueba objetiva. Los resultados fueron analizados a la luz del modelo mixto de procesamiento de información y constructivismo abordado por Winne(1998. Como resultado se encontró una relación significativa entre los niveles de desempeño en el proceso de ARR y el resultado del examen. Igualmente se encontraron bajos niveles de regulación en una parte importante de la muestra y un desfase significativo entre conocimiento declarativo de ARR y desempeño en el mismo

  10. Efecto de la raza y la edad sobre las concentraciones de hormonas tiroideas T3 y T4 de bovinos en condiciones tropicales Effect of the breed and age on the thyroid hormones T3 and T4 concentrations in bovines under tropical conditions

    Directory of Open Access Journals (Sweden)

    Rómulo Campos Gaona

    2008-06-01

    Full Text Available Para estudiar el efecto en condiciones de trópico seco de la edad y del grupo racial sobre las concentraciones séricas de las hormonas tiroideas T3 y T4, se muestrearon 158 animales de los grupos raciales Holstein, Lucerna, Hartón del Valle, Cebú Brahman y mestizo F1 (Cebú Brahman x Pardo Suizo, distribuidos en cuatro grupos de edad desde el nacimiento hasta el destete (8 meses. La concentración media de T3 fue 2.25 mmol/L y la de T4, 57.37 mmol/L. La correlación entre T3 y T4 fue de 0.53. Se encontró diferencia estadísticamente significativa para el efecto grupo racial, grupo de edad (PTo study the effect of age and breed on blood concentration of thyroid hormones T3 and T4 under the dry tropic conditions, 158 animals from the groups Holstein, Lucerna, Hartón del Valle, Brahman and crossbred F1 Brahman x Brown Swiss were sampled. The animals were allocated in four age groups from newborns calves until eight month old. The average T3 concentration was of 2.25 mmolL-¹ and the T4 was of 57.37 mmolL-¹. The correlation between T3 and T4 was of 0.53. A statistical significant difference (p<0.001 was found for the effects of age breed and group, but not difference was found for the interaction between breed and age (p=0.286. The breeds with higher blood concentrations of T3 and T4 were Holstein and Lucerna. The lowest concentration was found among the crossbred group. The higher concentration of T3 and T4 of thyroid hormones was found in the newborn group. As the calves grow, the concentrations of T3 and T4 decrease progressively. This study found that under dry tropic conditions, in a thermo-neutral borderline zone (according to the THI index the young bovines show clear differences in the concentration of the thyroid hormones

  11. CT of portal vein tumor thrombosis. Usefulness of dynamic CT

    Energy Technology Data Exchange (ETDEWEB)

    Takemoto, Kazumasa; Inoue, Yuichi; Tanaka, Masahiro; Nemoto, Yutaka; Nakamura, Kenji [Osaka City Univ. (Japan). Faculty of Medicine

    1983-08-01

    We evaluated CT findings of portal vein tumor thrombosis in 16 hepatomas by plain, contrast and dynamic CT. Plain and contrast CT findings were an enlargement of the portal vein (81%), intraluminal low density area (63%). Dynamic CT enhanced the diagnostic capability of the tumor thrombus as a relatively low density area because of the marked enhancement of the portal vein. In addition, dynamic CT newly demonstrated hyperdense peripheral ring (35%) and arterio portal shunt (35%). It is advisable to select the scan level to include the portal vein when dynamic CT is performed in the patient of hepatocellular carcinoma.

  12. Puentes con vigas pretensadas

    Directory of Open Access Journals (Sweden)

    Editorial, Equipo

    1965-07-01

    Full Text Available This paper describes one of the three bridges which Hidrocivil, S. A., has built in Catalonia (northern Spain, over the river Ripoll. The other two bridges are very similar to this one, both in construction and design, and show only minor adjustments to the local topography. The contracting firm proposed several alterations in the prefabrication and constructional procedure, in relation to the initial project, and these changes were accepted. The main feature of these projects is the use of prestressed beams, built at the workshop in sections, and joined together by means of sixty 7 mm cables in each beam. As the shear forces are more acute at the joints, the end of each section has a kind of diaphragm, to provide a large contact area, and hence greater surface to transmit the shear forces. The methods of construction are also of interest. Briefly, they involve building the bridge piles, and use these to support a provisional structure with transversal movement. This provisional structure, in turn, served as platform for two bridge cranes, which lifted the girders to their final location. After the first span was completed, the deck was concreted and the auxiliary structure pushed forward to the next span, to repeat the same operations. This arrangement saved the use of provisional framework.En este trabajo se describe uno de los tres puentes que Hidrocivil, S. A., ha construido.—previo concurso— en la región catalana; concretamente, el que salva el río Ripoll. Los otros dos no han sido objeto de descripción general por ser muy similares, en lo que a ejecución y concepción se refiere, con la única variante que presentan las características topográficas locales. La empresa propuso ciertas variantes— que fueron aceptadas— en la prefabricación y métodos de construcción. El interés de estas obras se centra en el empleo de vigas pretensadas, prefabricadas en taller por trozos, y solidarizados en el mismo mediante las operaciones

  13. CT images of gossypiboma

    International Nuclear Information System (INIS)

    Jeon, Hae Jeong; Lim, Jong Nam; Choi, Young Chil; Park, Jeong Hee

    1994-01-01

    Surgical sponges retained after laparotomy can cause serious problem if they were not be identified in early state. In these circumstances abdominal CT yields the accurate diagnostic images. The purpose of this report is to present highly indicative findings permitting correct preoperative diagnosis of the gossypiboma. We experienced three cases in which CT showed the images sufficiently characteristic to suggest the correct preoperative diagnosis. We evaluated retrospectively the radiological images of gossypiboma confirmed by operation. Three patients were admitted due to palpable masses. Two female patients had medical histories of cesarean sections and a male patient had been operated due to malignant fibrous histiocytoma, previously. Abdominal CT scan of one case revealed huge ovoid hypodense mass with enhanced peripheral rim. Calcific spots and whirl-like stripes were noted within the lesion. Towel was found in pathologic specimen. CT images of two patients showed well-encapsulated, mixed fluid and soft tissue density mass with several gas bubbles. Surgical sponges were found within abscesses. The authors conclude that these characteristic CT findings and careful histories of surgery are very useful for correct pre-operative diagnosis and permit the guideline for the optimal plan of the surgical treatment

  14. Helical CT defecography

    International Nuclear Information System (INIS)

    Ferrando, R.; Fiorini, G.; Beghello, A.; Cicio, G.R.; Derchi, L.E.; Consigliere, M.; Resasco, M.; Tornago, S.

    1999-01-01

    The purpose of this work is to investigate the possible role of Helical CT defecography in pelvic floor disorders by comparing the results of the investigations with those of conventional defecography. The series analyzed consisted of 90 patients, namely 62 women and 28 men, ranging in age 24-82 years. They were all submitted to conventional defecography, and 18 questionable cases were also studied with Helical CT defecography. The conventional examination was performed during the 4 standard phases of resting, squeezing, Valsalva and straining; it is used a remote-control unit. The parameters for Helical CT defecography were: 5 mm beam collimation, pitch 2, 120 KV, 250 m As and 18-20 degrees gantry inclination to acquire coronal images of the pelvic floor. The rectal ampulla was distended with a bolus of 300 mL nonionic iodinated contrast agent (dilution: 3g/cc). The patient wore a napkin and was seated on the table, except for those who could not hold the position and were thus examined supine. Twenty-second helical scans were performed at rest and during evacuation; multiplanar reconstructions were obtained especially on the sagittal plane for comparison with conventional defecographic images. Coronal Helical CT defecography images permitted to map the perineal floor muscles, while sagittal reconstructions provided information on the ampulla and the levator ani. To conclude, Helical CT defecography performed well in study of pelvic floor disorders and can follow conventional defecography especially in questionable cases [it

  15. CT of thymoma

    International Nuclear Information System (INIS)

    Sone, Shusuke; Higashihara, Tokuro; Morimoto, Shizuo; Ikezoe, Junpei; Arisawa, Jun

    1982-01-01

    Based on 17 patients with thymoma (8 with myasthenia gravis and 9 free from it); 1. The effectiveness of CT, conventional radiography and pneumomediastinography in the detection of thymomas was determined and the results compared. 2. The CT findings of thymomas were discussed and the CT features which seemed to suggest malignant thymomas were evaluated. The results were as follows: 1. Of the 17 cases with thymomas, 13 were diagnosed from p-a films, 13 from lateral films, and 16 from CT. Of the 16 thymomas, 14 were diagnosed from lateral tomography. Mass densities were shown in all 15 cases in which pneumomediastinography were performed. 2. Benign thymomas showed round or oval smoothly marginated mass. The fatty plane between the mass and the mediastinal structures was nicely preserved. 3. Malignant thymoma frequently showed a plaque-like mass with more or less irregular or lobulated contoures with obliteration of the fatty planes of the cardiovascular structures. Tumor calcification was shown in 4 of 10 malignant thymomas. 4. Slight tumor invasion to the mediastinal pleura and lung was difficult to predict from the CT images. (author)

  16. CT of thymoma

    Energy Technology Data Exchange (ETDEWEB)

    Sone, S.; Higashihara, T.; Morimoto, S.; Ikezoe, J.; Arisawa, J. (Osaka Univ. (Japan). Faculty of Medicine)

    1982-08-01

    Based on 17 patients with thymoma (8 with myasthenia gravis and 9 free from it); 1. The effectiveness of CT, conventional radiography and pneumomediastinography in the detection of thymomas was determined and the results compared. 2. The CT findings of thymomas were discussed and the CT features which seemed to suggest malignant thymomas were evaluated. The results were as follows: 1. Of the 17 cass with thymomas, 13 were diagnosed from p-a films, 13 from lateral films, and 16 from CT. Of the 16 thymomas, 14 were diagnosed from lateral tomography. Mass densities were shown in all 15 cases in which pneumomediastinography were performed. 2. Benign thymomas showed round or oval smoothly marginated mass. The fatty plane between the mass and the mediastinal structures was nicely preserved. 3. Malignant thymoma frequently showed a plaque-like mass with more or less irregular or lobulated contours with obliteration of the fatty planes of the cardiovascular structures. Tumor calcification was shown in 4 of 10 malignant thymomas. 4. Slight tumor invasion to the mediastinal pleura and lung was difficult to predict from the CT images.

  17. CT and MR urography

    International Nuclear Information System (INIS)

    Hadjidekov, G.

    2012-01-01

    Full text: Learning objectives:1) To describe the techniques of CT Urography and of MR urography; 2) To illustrate the benefit of the methods in clinical practice; 3)To present typical cases from the daily practice CT has become the mainstay of uroradiology in adults. CT urography is an excellent technique for the evaluation of urinary tract calculi, trauma, infections, complicated cysts, renal masses, having high sensitivity and specificity for both conditions facilitated by the possibilities for multiplanar imaging of the urinary system. It resembles excretory urography and consists of unenhanced, nephrographic, and pyelographic phases and can be used even as routine investigation. MR urography is a new, modern modality for evaluation of various urological abnormalities providing both morphological and functional information by means of different sequences with or without injection of gadolinium. The method is clinically useful in the evaluation of the collecting system, various variants and congenital abnormalities of the kidney, different cases of obstruction of the excretory system, tumors and inflammatory processes, hematuria. Compared to CT urography, MR urography is particularly beneficial in pediatric group or pregnant patients. It can also be performed in patients with renal insufficiency, iodine allergy and other cases of contraindications to the use of ionizing radiation. CT and MR urography are promising diagnostic methods of the wide spectrum of pathological conditions affecting the urinary tract. They are highly informative and overcome a lot of limitations of the other imaging modalities with the potential to become leading modalities to diagnose kidney diseases and other urogenital disorders.

  18. CT images of gossypiboma

    Energy Technology Data Exchange (ETDEWEB)

    Jeon, Hae Jeong; Lim, Jong Nam; Choi, Young Chil; Park, Jeong Hee [College of Medicine, Kon-Kuk University, Seoul (Korea, Republic of)

    1994-04-15

    Surgical sponges retained after laparotomy can cause serious problem if they were not be identified in early state. In these circumstances abdominal CT yields the accurate diagnostic images. The purpose of this report is to present highly indicative findings permitting correct preoperative diagnosis of the gossypiboma. We experienced three cases in which CT showed the images sufficiently characteristic to suggest the correct preoperative diagnosis. We evaluated retrospectively the radiological images of gossypiboma confirmed by operation. Three patients were admitted due to palpable masses. Two female patients had medical histories of cesarean sections and a male patient had been operated due to malignant fibrous histiocytoma, previously. Abdominal CT scan of one case revealed huge ovoid hypodense mass with enhanced peripheral rim. Calcific spots and whirl-like stripes were noted within the lesion. Towel was found in pathologic specimen. CT images of two patients showed well-encapsulated, mixed fluid and soft tissue density mass with several gas bubbles. Surgical sponges were found within abscesses. The authors conclude that these characteristic CT findings and careful histories of surgery are very useful for correct pre-operative diagnosis and permit the guideline for the optimal plan of the surgical treatment.

  19. Violencia con el anciano

    Directory of Open Access Journals (Sweden)

    Rita Campillo Motilva

    2002-08-01

    Full Text Available La violencia doméstica es tan antigua como la humanidad misma y se reconocen la violencia infantil, contra la mujer y al anciano, fundamentalmente; siendo este último grupo una población en ascenso por las mayores expectativas de vida de los últimos años. Como resultado de ello, el número de casos de abuso en el anciano se incrementará y el impacto de este abuso sobre la salud debe ser considerado de forma adecuada. La gama de maltratos es variadísima e incluye el abuso físico, emocional, financiero, sexual, por negligencia, negación a brindarle ayuda y otras formas más. Los ancianos con deterioro cognitivo son los más vulnerables. El médico en la atención primaria de salud es un pilar importante en la prevención y educación de este problema.Domestic violence is as old as humanity itself. Child, women and elderly abuse are mainly recognized. The elderly group is increasing due to the higher life expectancy experimented during the last years. As a result, the number of battered elderly will grow and the impact of this abuse on health should be adequately considered. The range of abuse is very wide and it includes physical, emotional, financial and sexual abuse, negligence, rejection to give assistance and others. The elderly with cognitive deterioration are the most vulnerable. The physician at the primary health care level is an important milestone in the prevention and education of this problem.

  20. Evaluación de uniones soldadas obtenidas con fundentes fundidos desarrollados con minerales cubanos

    Directory of Open Access Journals (Sweden)

    Gilma Castellanos-Hernández

    2000-03-01

    Full Text Available En este artículo se hace una caracterización integral de las uniones soldadas obtenidas en acero ct-3, correspondientes al estudio del prototipo de fundente fundido CIS-F10 para la soldadura automática bajo arco sumergido (SAW. Se muestran los resultados del análisis químico del metal de la unión soldada, así como los ensayos mecánicos de tracción longitudinal y resiliencia, según la norma AWS A5: 17. Se incluyen además las muestras metalográficas correspondientes. Los resultados son comparables con los obtenidos empleando fundentes comerciales AS 200 y AH 348.

  1. Dual source CT imaging

    International Nuclear Information System (INIS)

    Seidensticker, Peter R.; Hofmann, Lars K.

    2008-01-01

    The introduction of Dual Source Computed Tomography (DSCT) in 2005 was an evolutionary leap in the field of CT imaging. Two x-ray sources operated simultaneously enable heart-rate independent temporal resolution and routine spiral dual energy imaging. The precise delivery of contrast media is a critical part of the contrast-enhanced CT procedure. This book provides an introduction to DSCT technology and to the basics of contrast media administration followed by 25 in-depth clinical scan and contrast media injection protocols. All were developed in consensus by selected physicians on the Dual Source CT Expert Panel. Each protocol is complemented by individual considerations, tricks and pitfalls, and by clinical examples from several of the world's best radiologists and cardiologists. This extensive CME-accredited manual is intended to help readers to achieve consistently high image quality, optimal patient care, and a solid starting point for the development of their own unique protocols. (orig.)

  2. CT in dental osseointegration

    International Nuclear Information System (INIS)

    Witte, D.

    1992-01-01

    Computerised tomography (CT) plays a key role in the pre-surgical evaluation of the alveolar process for titanium dental implants. The successful replacement of lost teeth by tissue integrated tooth root implants is a major advance in clinical dentistry. The paper will discuss briefly the history of osseointegration and how CT is now involved in helping the edentulous patient. CT is considered as a quick and convenient method of obtaining excellent anatomical information about the maxilla. Conventional tomography is difficult to obtain and does not provide valuable cross-sectional images. Exact height and width calculations can be made as well as screening out patients with advanced bone resorption. 3 refs. 6 figs

  3. CT in colon cancer

    International Nuclear Information System (INIS)

    Fujita, Nobuyuki; Hasegawa, Takashi; Kubo, Kozo; Ogawa, Hajime; Sato, Yukihiko; Tomita, Masayoshi; Hanawa, Makoto; Matsuzawa, Tohru; Nishioka, Ken

    1990-01-01

    CT pictures from 59 lesions of advanced colon cancer including rectal cancer were reviewed to evaluate a role of CT in preoperative staging diagnosis. CT findings were recorded following general rules for clinical and pathological studies on cancer of colon rectum and anus, proposed by Japanese society for cancer of colon and rectum. Tumors were detected in 90% of advanced colon cancers. Sensitivity in local extension (S factor) was 58.0%. Sensitivity in lymphonode involvement (N factor) was 50.0%. Sensitivity in final staging diagnosis, dividing colon cancer into two groups below st II and above st III, was 63.3%. Further study should be necessitated to provide useful information for preoperative staging diagnosis of colon cancer. (author)

  4. Axial skeletal CT densitometry

    International Nuclear Information System (INIS)

    Lampmann, L.E.H.

    1982-01-01

    Since the discovery of the Roentgen ray a precise and accurate assessment of bone mineral content has been a challenge to many investigators. A number of methods have been developed but no one satisfied. Considering its technical possibilities computed tomography is very promising in determination of bone mineral content (BMC). The new modality enables BMC estimations in the axial skeletal trabecular bone. CT densitometry can be performed on a normal commercially available third generation whole body CT scanner. No dedicated device in a special clinical set-up is necessary. In this study 106 patients, most of them clinically suspected of osteoporosis, were examined. The new method CT densitometry has been evaluated. The results have been correlated to alternative BMC determination methods. (Auth.)

  5. Clinical application of gated CT and dynamic CT

    Energy Technology Data Exchange (ETDEWEB)

    Ishikawa, T; Oyama, Y; Ashida, H; Uji, T [Saint Marianna Univ., Kawasaki, Kanagawa (Japan). School of Medicine

    1980-03-01

    Gated CT and dynamic CT were outlined. Experiences of portal hypertension accompanied by venous mass in posterior mediastinum and the usefulness of dynamic CT for this disease were described. Gated CT of the heart could visualize intracardiac structures and morphological abnormalities by improving technique of post-data-aquisition correlation. Changes with time in CT images of normal kidneys were discussed on patients whose unilateral or bilateral kidneys were thought to be normal and who had received dynamic scan. Dynamic scan could visualize well blood circulation and mechanism of urine excretion in the kidney, which suggests a possibility of CT to detect not only morphological abnormalities but also functional disturbance of the kidney. The effectiveness of conventional CT study might be promoted in dynamic CT of the head.

  6. CT findings of slilcosis

    International Nuclear Information System (INIS)

    Jung, Dong Hee; Kim, Kun Il; Son, Hyun Ju; Ro, Young Jin; Jung, Doo Young; Park, Jae Yeong; Lee, Jun Woo; Kim, Byung Soo

    1996-01-01

    To describe chest radiographic and CT findings of silicosis, and to compare their findings. Ten coal miners and six stonemasons were included in this study. All were male and their mean age was 53.1. The mean duration of dust exposure was 15.2 years(range, 5-30 years) in coal miners and 25.3 years(range, 15-35 years) in stonemasons. Chest radiographs(n=16), conventional CT scans(n=4), and high resolution CT(HRCT) scans(n=13) were evaluated. Parenchymal abnormalities were interpreted on the basis of ILO standard films(1980) in chest radiographs and on the basis of CAP(College of American Pathologists, 1979) in CT(HRCT) films. Chest radiographs revealed large opacities(n=8), small opacities(n=6), and normal findings(n=2). Type r(n=4) and category 1/1(n=2) were most common for small opacities, while for large opacities, category B(n=4) and category c(n=4) were most common. These small and large opacities were located predominantly in the area of the upper and middle lung. Associated findings were emphysema(n=7), eggshell nodal calcifications(n=3), pneumothorax(n=3), C-P angle blunting(n=4), and pleural thickening(n=1). CT scans revealed micronodules(n=16), nodules(n=3), and progressive massive fibrosis(PMF, n=8). All these lesions were located in the upper and middle lungs, especially in the central portion of the posterior lung. PMF showed diffuse and homogenous(n=3) and puntate(n=2) calcifications, cavitations(n=5), air bronchograms(n=3), and necrosis(n=1). Peripheral paracicatrical emphysema was associated with PMF(n=8). Other findings were pneumothorax(n=4), emphysema(n=10), hilar and mediastinal nodal enlargement(n=11) bronchial wall thick- enings(n=6), bronchiectasis(n=1), pleural thickening(n=7), parenchymal fibrosis(n=1), and pulmonary tuberculosis(n=2). Small and large opacities in chest radiographs and micronodules, nodules, and PMFs in CT (HRCT) films were located predominately in the upper and middle lungs, especially in the central portion of the

  7. Normal cranial CT anatomy

    International Nuclear Information System (INIS)

    Gado, M.H.; Rao, K.C.V.G.

    1987-01-01

    The human brain consists of well-known anatomical components. Some parts of these components have been shown to be concerned with certain functions. A complete cranial CT examination consists of a series of several slices obtained in a sequence usually from the base to the vertex of the cranial vault, in the axial mode. The ultimate goal of this chapter is to pinpoint those slices that depict a given anatomical structure or several structures that deal with a given function. To achieve this goal, the discussion of CT cranial anatomy is presented in three sections

  8. CT- and MR colonography

    DEFF Research Database (Denmark)

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

    2002-01-01

    BACKGROUND: Colorectal cancer is the second most frequent cancer and adenomas are widely accepted as precursors to colorectal cancer. Diagnosis and removal of adenomas are recommended to reduce cancer incidence and mortality. The current diagnostic methods include sigmoidoscopy and colonoscopy....... 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...

  9. CT findings of medulloblastoma

    International Nuclear Information System (INIS)

    Tsuchida, Tadashi; Fukuda, Mitsunori; Takeda, Norio; Tanaka, Ryuichi; Ito, Jusuke.

    1982-01-01

    Computed tomography (CT) of ten patients with medulloblastomas was evaluated. Six of them showed solid, nearly homogeneous lesions and a definite enhancement after the infusion of the contrast medium. However, 4 cases showed heterogenous mass lesions composed of areas of a low density and an iso- or slightly high density which was attenuated by contrast enhancement. Histological examinations revealed differentiated medulloblastomas in two of them, but the other two cases were typical medulloblastomas. It should be remembered that medulloblastomas can reveal heterogenous cerebellar midline mass lesions in CT scans. (author)

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

    Medline Plus

    Full Text Available ... obtain CT images. It is known that high levels of radiation may cause cancer. However, CT scans result in a low-level exposure. Whether such levels cause cancer is debatable ...

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

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    Full Text Available ... trauma to blood vessels or lung CT is well-suited for visualizing diseases or injury of important ... detailed images of many types of tissue as well as the lungs, bones, and blood vessels. CT ...

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

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    Full Text Available ... CT is well-suited for visualizing diseases or injury of important organs in the abdomen including the liver, kidney and spleen. CT is sometimes used to: diagnose appendicitis detect ...

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

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    Full Text Available ... scanners to obtain multiple slices in a single rotation. These scanners, called "multislice CT" or "multidetector CT," ... prescribed procedure with your doctor, the medical facility staff and/or your insurance provider to get a ...

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

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    Full Text Available ... medications and allergies. Inform your doctor and the technologist prior to the exam if your child has ... exam. This can be discussed with the CT technologist, the specialist who will be performing the CT ...

  15. 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. A major advantage of CT is its ability to image bone, soft tissue and blood vessels ...

  16. 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 ...

  17. 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 ...

  18. 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 ...

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

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    Full Text Available ... is Children's CT? Computed tomography, more commonly known as a CT or CAT scan, is a diagnostic ... is used to evaluate: complications from infections such as pneumonia a tumor that arises in the lung ...

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

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    Full Text Available ... over time. top of page What are the benefits vs. risks? Benefits Using a multidetector CT unit to examine children ... scanning is painless, noninvasive and accurate. A major advantage of CT is its ability to image bone, ...

  1. 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 ... of imaging in these procedures in children. A diagnosis determined by CT scanning may eliminate the need ...

  2. 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, ...

  3. 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 ...

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

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    Full Text Available ... such as inflammation of the bronchi (breathing passages) birth defects trauma to blood vessels or lung CT ... used to: diagnose appendicitis detect abdominal tumors or birth defects In the pelvic region, CT scans can ...

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

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    Full Text Available ... a very detailed multidimensional view of the body's interior. Refinements in detector technology allow new CT scanners ... to read. top of page What will my child experience during and after the procedure? CT exams ...

  6. 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 ...

  7. CT manifestations of liver abscess

    International Nuclear Information System (INIS)

    Yan Jianfeng; Peng Yongjun

    2006-01-01

    Objective: To study CT findings of hepatic abscess. Methods: CT findings and clinical materials of 38 patients with liver abscess verified by aspiration were retrospectively viewed. All patients were examined by non-enhanced and contrast enhanced CT. Results: In 25 cases, inhomogeneous hypodense lesions with unclear demarcation were found on non-enhanced CT. On contrast enhanced CT scan, target or cluster enhancement was found Additionally, air was found within some lesions. In the rest 13 cases with early stage liver abscess, no typical sign was found on non-enhanced CT, while rosette sign and continued enhancement sign were demonstrated after the contrast agent was given. Conclusion: Various CT findings are found in different stages of liver abscess. The diagnosis and differential diagnosis should be based on CT manifestations and clinical history as well. (authors)

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

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    Full Text Available ... scanners to obtain multiple slices in a single rotation. These scanners, called "multislice CT" or "multidetector CT," ... best for your child. top of page Additional Information and Resources The Alliance for Radiation Safety in ...

  9. 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 ... scanning is painless, noninvasive and accurate. A major advantage of CT is its ability to image bone, ...

  10. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... or other medical conditions and whether you 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 inform their physician and the CT ...

  11. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... or other medical conditions and whether you 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 inform their physician and the CT ...

  12. Abdominal and Pelvic CT

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    Full Text Available ... colitis or Crohn's disease , pancreatitis 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 ... chance of cancer from excessive exposure to radiation. However, the benefit ...

  13. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... over time. Follow-up examinations are sometimes the best way to see if treatment is working or if a finding is stable or changed over time. top of page What are the benefits vs. risks? Benefits A CT scan is one of the safest means of studying the sinuses. ...

  14. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... works very much like other x-ray examinations. Different body parts absorb the x-rays in varying degrees. ... CT scanner technique will be adjusted to their size and the area of interest to reduce the ... area of the body being studied. top of page How is the ...

  15. Abdominal and Pelvic CT

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    Full Text Available ... works very much like other x-ray examinations. Different body parts absorb the x-rays in varying degrees. ... CT scanner technique will be adjusted to their size and the area of interest to reduce the ... area of the body being studied. top of page How is the ...

  16. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... works very much like other x-ray examinations. Different body parts absorb the x-rays in varying degrees. ... CT scanner technique will be adjusted to their size and the area of interest to reduce the ... area of the body being studied. top of page How is the ...

  17. 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 ...

  18. 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 ...

  19. 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 ...

  20. Computed Tomography (CT) -- Head

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    Full Text Available ... procedure work? How is the procedure performed? What will I experience during and after the procedure? Who interprets the results and how do I get them? What are the benefits vs. risks? What are the limitations of CT ...

  1. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... procedure work? How is the procedure performed? What will I experience during and after the procedure? Who interprets the results and how do I get them? What are the benefits vs. risks? What are the limitations of CT ...

  2. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... procedure work? How is the procedure performed? What will I experience during and after the procedure? Who interprets the results and how do I get them? What are the benefits vs. risks? What are the limitations of CT ...

  3. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... to help detect diseases of the small bowel, colon and other internal organs and is often used to determine the cause of unexplained pain. CT scanning is fast, painless, noninvasive and accurate. In emergency cases, it can reveal internal injuries and bleeding quickly enough to help save lives. ...

  4. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... 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 pediatric considerations. The teddy bear denotes child-specific content. Related ...

  5. Abdominal and Pelvic CT

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    Full Text Available ... 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 pediatric considerations. The teddy bear denotes child-specific content. Related ...

  6. Computed Tomography (CT) -- Head

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    Full Text Available ... 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 pediatric considerations. The teddy bear denotes child-specific content. Related ...

  7. Abdominal and Pelvic CT

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    Full Text Available ... and Resources RTAnswers.org: Radiation Therapy for Bladder Cancer Radiation Therapy for Colorectal Cancer top of page This page was reviewed on ... with caption Pediatric Content Some imaging tests and treatments have special pediatric considerations. ... Images related to Computed Tomography (CT) - Abdomen and ...

  8. Abdominal and Pelvic CT

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    Full Text Available ... in direct visual contact and usually with the ability to hear and talk to you with the use of a speaker and microphone. top of page How does the procedure work? In many ways CT scanning works very much ...

  9. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... in direct visual contact and usually with the ability to hear and talk to you with the use of a speaker and microphone. top of page How does the procedure work? In many ways CT scanning works very much ...

  10. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... in direct visual contact and usually with the ability to hear and talk to you with the use of a speaker and microphone. top of page How does the procedure work? In many ways CT scanning works very much ...

  11. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... conditions may increase the risk of an unusual adverse effect. Women should always inform their physician and the ... CT scanning may eliminate the need for exploratory surgery and surgical biopsy. ... immediate side effects. Risks There is always a slight chance of ...

  12. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... conditions may increase the risk of an unusual adverse effect. The radiologist also should know if you have ... CT scanning may eliminate the need for exploratory surgery and surgical ... immediate side effects. Risks There is always a slight chance of ...

  13. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... conditions may increase the risk of an unusual adverse effect. Women should always inform their physician and the ... CT scanning may eliminate the need for exploratory surgery and surgical biopsy. ... immediate side effects. Risks There is always a slight chance of ...

  14. Computed Tomography (CT) -- Sinuses

    Medline Plus

    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 ... lie still is reduced. Though the scanning itself causes no pain, there may be some discomfort from ...

  15. Computed Tomography (CT) -- Head

    Medline Plus

    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 ... for children who cannot hold still. Motion will cause blurring of the images and degrade the quality ...

  16. Computed Tomography (CT) -- Sinuses

    Medline Plus

    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 ...

  17. Abdominal and Pelvic CT

    Medline Plus

    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 ...

  18. Computed Tomography (CT) -- Head

    Medline Plus

    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 ...

  19. Computed Tomography (CT) -- Head

    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 ... CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple images ...

  20. Computed Tomography (CT) -- Sinuses

    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 ... CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple images ...

  1. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... in direct visual contact and usually with the ability to hear and talk to you with the use of a speaker and microphone. top of page How does 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 ...

  2. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... in direct visual contact and usually with the ability to hear and talk to you with the use of a speaker and microphone. top of page How does 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 ...

  3. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... in direct visual contact and usually with the ability to hear and talk to you with the use of a speaker and microphone. top of page How does 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 ...

  4. CT-guided puncture

    International Nuclear Information System (INIS)

    Noeldge, G.; Richter, G.M.; Grenacher, L.; Brado, M.; Kauffmann, G.W.

    1996-01-01

    Sonographic and CT-guided punctures allow the evaluation of suspected lesions in the head, thorax, abdomen, retroperitoneum and skeletal system. The size of the lesion to be evaluated determines the size and the diameter of the puncture needle. The quantity of the material obtained will be defined by the diameter of the needle, i.e. fine-needle biopsy is more adequate for cytological than for histological evaluation. Strict adherence to the indications and contraindications for puncture and painstaking performance of the procedure go a long why towards minimizing the complications. The advantage of CT-guided puncture, in contrast to an ultrasound-guided procedure, is visualization during the puncture procedure free from overshadowing. This permits punctures of lesions located deep in the thorax or the abdomen which are overshadowed by the lungs, by air in the small or large bowel or by bone structures. Moreover, this technique yields much more information about the tissues and organs surrounding the suspected lesion. This information is much more investigator-related with ultrasoundguided puncture. Therefore, the CT-guided puncture has become mandatory in the evaluation of suspected lesions. Moreover, using the same technique, percutaneous drainage of fluids in the interpleural space, abscesses in organs, hematomas, lymphoceles and urinomas; ablation of metastases; and sympathicolysis can be carried out. CT-guided puncture thus changes from a minimally invasive diagnostic procedure to a minimally invasive therapy. (orig./MG) [de

  5. Computed Tomography (CT) -- Head

    Medline Plus

    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 ...

  6. Computed Tomography (CT) -- Sinuses

    Medline Plus

    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 ...

  7. CT image of thymoma

    Energy Technology Data Exchange (ETDEWEB)

    Morioka, Nobuo; Shudo, Yuji; Jahana, Masanobu; Matsuki, Tsutomu; Kotani, Kazuhiko (Tottori Univ., Yonago (Japan). School of Medicine)

    1983-10-01

    Computor tomographic images of 11 patients who had had thymectomy for myasthenia gravis or thymoma were studied retrospectively. Of those 11 patients, malignant thymoma and benign condition including normal thymus were 6 and 5 respectively. On CT, calcification and lobulation with irregular margin seem to be reliable findings of malignancy. Defect or abscence of fatty plane and non-homogenous density are ancillary.

  8. CT image of thymoma

    International Nuclear Information System (INIS)

    Morioka, Nobuo; Shudo, Yuji; Jahana, Masanobu; Matsuki, Tsutomu; Kotani, Kazuhiko

    1983-01-01

    Computor tomographic images of 11 patients who had had thymectomy for myasthenia gravis or thymoma were studied retrospectively. Of those 11 patients, malignant thymoma and benign condition including normal thymus were 6 and 5 respectively. On CT, calcification and lobulation with irregular margin seem to be reliable findings of malignancy. Defect or abscence of fatty plane and non-homogenous density are ancillary. (author)

  9. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... other medical conditions and whether you 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 inform their physician and the CT ...

  10. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... other medical conditions and whether you 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 inform their physician and the CT ...

  11. Abdominal and Pelvic CT

    Medline Plus

    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 top of page ...

  12. Computed Tomography (CT) -- Head

    Medline Plus

    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 ... shield may stay in the room with their child. However, the technologist will always be able to ...

  13. Abdominal and Pelvic CT

    Medline Plus

    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 ... shield may stay in the room with their child. However, the technologist will always be able to ...

  14. Computed Tomography (CT) -- Sinuses

    Medline Plus

    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 ... shield may stay in the room with their child. However, the technologist will always be able to ...

  15. Pulmonary hypertension CT imaging

    International Nuclear Information System (INIS)

    Nedevska, A.

    2013-01-01

    Full text: The right heart catheterization is the gold standard in the diagnosis and determines the severity of pulmonary hypertension. The significant technical progress of noninvasive diagnostic imaging methods significantly improves the pixel density and spatial resolution in the study of cardiovascular structures, thus changes their role and place in the overall diagnostic plan. Learning points: What is the etiology, clinical manifestation and general pathophysiological disorders in pulmonary hypertension. What are the established diagnostic methods in the diagnosis and follow-up of patients with pulmonary hypertension. What is the recommended protocol for CT scanning for patients with clinically suspected or documented pulmonary hypertension. What are the important diagnostic findings in CT scan of a patient with pulmonary hypertension. Discussion: The prospect of instantaneous complex - anatomical and functional cardiopulmonary and vascular diagnostics seems extremely attractive. The contrast enhanced multislice computed (CT ) and magnetic resonance imaging are very suitable methods for imaging the structures of the right heart, with the possibility of obtaining multiple projections and three-dimensional imaging reconstructions . There are specific morphological features that, if carefully analyzed, provide diagnostic information. Thus, it is possible to avoid or at least reduce the frequency of use of invasive diagnostic cardiac catheterization in patients with pulmonary hypertension. Conclusion: This review focuses on the use of contrast-enhanced CT for comprehensive evaluation of patients with pulmonary hypertension and presents the observed characteristic changes in the chest, lung parenchyma , the structures of the right half of the heart and pulmonary vessels

  16. 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.

  17. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... operates the scanner and monitors your examination in direct visual contact and usually with the ability to hear and talk to you with the use of a speaker and microphone. top of page How does the procedure work? In many ways CT scanning works very much ...

  18. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... operates the scanner and monitors your examination in direct visual contact and usually with the ability to hear and talk to you with the use of a speaker and microphone. top of page How does the procedure work? In many ways CT scanning works very much ...

  19. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... operates the scanner and monitors your examination in direct visual contact and usually with the ability to hear and talk to you with the use of a speaker and microphone. top of page How does the procedure work? In many ways CT scanning works very much ...

  20. CT Diagnosis of Appendicitis

    Directory of Open Access Journals (Sweden)

    Christopher Libby

    2017-01-01

    Full Text Available History of present illness: A 19-year-old male with no previous medical history presented with 7/10 non-radiating, constant, sharp, periumbilical pain associated with nausea, and four episodes of vomiting. He was seen at urgent care where his labs showed a WBC of 16,000/mcL. He was subsequently sent to the emergency department (ED for concern of appendicitis. Of note, his pain worsened with bumps during the drive to the ED. After arriving to the ED the pain migrated to the right lower quadrant. Computed tomography (CT revealed acute appendicitis and the patient was admitted to the surgery service and taken to the operating room (OR for an appendectomy. Significant findings: The CT abdomen/pelvis with IV contrast shows a dilated appendix (see red outline with thickened, hyperenhancing wall (see blue outline best visualized in the axial and coronal planes. Discussion: Appendicitis is a common diagnosis in the emergency department in patients presenting with abdominal pain, occurring most frequently in young adults with a peak incidence in those aged 10-19.1 Failure to quickly diagnose acute appendicitis can result in perforation rates as high as 80 percent.2 While the diagnosis of appendicitis can be made clinically, CT is a non-invasive modality that improves the detection of appendicitis with sensitivities of 88–100%, specificities of 91–99%, positive predictive values of 92–98%, negative predictive values of 95–100%, and accuracies of 94–98%.3-8 The major advantage of CT over both clinical exam and ultrasound is the ability of the radiologist to exclude acute appendicitis if the appendix appears normal. However, CT carries the risks associated with ionizing radiation. While previously there was some debate on the best choice for type of CT scan and use of IV and oral contrast, recent studies have shown that CT abdomen/pelvis with IV contrast alone is sufficient for diagnosis of appendicitis.9, 10

  1. Acne polimorfo: tratamiento con Implacen

    Directory of Open Access Journals (Sweden)

    Rubén Pérez Armas

    1995-06-01

    Full Text Available Se realiza el estudio de 40 pacientes con acné polimorfo, los que fueron atendidos en la Consulta de Dermatología del Hospital Provincial Clinicoquirúrgico Docente "Celia Sánchez Manduley", en el período comprendido de enero de 1988 a diciembre de 1989. Se revisa la literatura médica sobre los diversos métodos y medicamentos utilizados en la terapéutica de esta dermatosis. Se describe el esquema de tratamiento empleado con implacén en 30 pacientes; los 10 restantes se trataron con placebo; se compara dicho esquema con los tradicionales y se observan mejores resultados con nuestro estudio. Se destaca la ausencia de recaídas, así como el resultado del tratamiento de acuerdo con el sexo.A study was performed in 40 patients presenting with polymorphic acne who were attended in the Dermatology Department of "Celia Sánchez Manduley" Clinicosurgical and Teaching Hospital from January, 1988 to December, 1989. A review of the literature was made seeking for the different methods and drugs used for the treatment of this dermatosis. The treatment schedule with the use of implacen in 30 patients is described. Such therapeutic schedule was compared with traditional ones and better results were observed with the use of implacen. The fact that there were no relapses is highlighted, as well as the result of treatment according to sex.

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

    Medline Plus

    Full Text Available ... multislice CT" or "multidetector CT," allow thinner slices to be obtained, resulting in more detail of the body, in a shorter period of time. Modern CT scanners are so fast that they can scan through large sections of the body in just a few seconds. Such speed is beneficial for ...

  3. Postoperative CT in pancreas transplantation

    International Nuclear Information System (INIS)

    Powell, F.E.; Harper, S.J.F.; Callaghan, C.J.; Shaw, A.; Godfrey, E.M.; Bradley, J.A.; Watson, C.J.E.; Pettigrew, G.J.

    2015-01-01

    Aim: To examine the usage and value of computed tomography (CT) following simultaneous pancreas and kidney (SPK) transplantation. Materials and methods: Indications for postoperative CT, key findings, and their influence on management were determined by retrospective analysis. Results: Ninety-eight patients underwent 313 CT examinations. Common indications for the examinations included suspected intra-abdominal collection (31.1%) and elevated serum amylase/lipase (24.1%). CT findings most frequently showed non-specific mild inflammation (27.6%), a normal scan (17.1%) and fluid collections (16.3%). High capillary blood glucose (CBG) was associated with resultant CT demonstration of graft vascular abnormalities, but otherwise, particular clinical indications were not associated with specific CT findings. Conclusion: Clinical findings in patients with SPK transplants are non-specific. The pattern of abnormalities encountered is significantly different to those seen in native pancreatic disease and demands a tailored protocol. CT enables accurate depiction of vascular abnormalities and fluid collections, thus reducing the number of surgical interventions that might otherwise be required. Elevated CBG should prompt urgent CT to exclude potentially reversible vascular complications. - Highlights: • The value of CT following simultaneous pancreas and kidney transplantation was assessed. • 313 CT scans were performed on 98 patients between January 2005 and August 2010. • Elevated blood glucose was associated with CT findings of graft vascular anomalities. • CT was particularly useful in directing operative versus non-operative intervention.

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

    Medline Plus

    Full Text Available ... vessels. CT examinations are fast and simple; in emergency cases, they can reveal internal injuries and bleeding quickly enough to help save lives. CT has been shown to be a cost-effective imaging tool for a wide range of clinical problems. CT is less sensitive to patient movement ...

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

    Medline Plus

    Full Text Available ... What is Children's CT? What are some common uses of the procedure? How should we prepare for the CT scan? What does the CT equipment look like? How does the procedure work? How is the procedure performed? What will my ...

  6. CT evaluation of acetabular fractures

    Energy Technology Data Exchange (ETDEWEB)

    Piazza, P; Girelli, G; Coran, F; Lutman, M

    1986-01-01

    The paper deals with sixteen cases of acetabular fractures studied with CT. After a short description of the normal CT findings, the different kind of fractures are reported. The usefulness of CT examination in evaluating acetabular fractures and their complications is confirmed both in conservative treatment and surgical approach.

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

    Medline Plus

    Full Text Available ... CT examinations are fast and simple; in emergency cases, they can reveal internal injuries and bleeding quickly enough to help save lives. CT has been shown to be a cost-effective imaging tool for a wide range of clinical problems. CT ...

  8. Do SNOMED CT Relationships Qualify?

    NARCIS (Netherlands)

    Cornet, Ronald

    2008-01-01

    An important feature of SNOMED CT is post-coordination, which is enabled as SNOMED CT specifies refinability of target concepts of relationships. In this paper the use of refinable relationships in SNOMED CT is analysed, and the interplay between refinable and defining relationships. Refinability is

  9. Absorbed dose in CT. Comparison by CT dose index

    International Nuclear Information System (INIS)

    Yamamoto, Kenji; Akazawa, Hiroshi; Andou, Takashi

    2002-01-01

    Few reports have discussed the absorbed dose on CT units with increased scanning capacity even with the current widespread adoption of multi-slice CT units. To compare and investigate the dose indexes among CT units, we measured the absorbed dose on CT units operating in Nagano Prefecture Japan. The measurements showed proportionality between phantom absorbed dose and the exposured mAs values in conventional scanning operation. Further, the measurements showed that the absorbed dose in the center of the phantom differed by about 2.1-fold between the highest and lowest levels on individual CT units. Within a single company, multi-slice CT units of the same company gave absorbed doses of about 1.3 to 1.5 times those of conventional single-slice CT units under the same exposured conditions of conventional scanning. When the scanning pitch was reduced in helical scanning, the absorbed dose at the center of the phantom increased. (author)

  10. Perfusion CT in acute stroke

    International Nuclear Information System (INIS)

    Eckert, Bernd; Roether, Joachim; Fiehler, Jens; Thomalla, Goetz

    2015-01-01

    Modern multislice CT scanners enable multimodal protocols including non-enhanced CT, CT angiography, and CT perfusion. A 64-slice CT scanner provides 4-cm coverage. To cover the whole brain, a 128 - 256-slice scanner is needed. The use of perfusion CT requires an optimized scan protocol in order to reduce exposure to radiation. As compared to non-enhanced CT and CT angiography, the use of CT perfusion increases detection rates of cerebral ischemia, especially small cortical ischemic lesions, while the detection of lacunar and infratentorial stroke lesions remains limited. Perfusion CT enables estimation of collateral flow in acute occlusion of large intra- or extracranial arteries. Currently, no established reliable thresholds are available for determining infarct core and penumbral tissue by CT perfusion. Moreover, perfusion parameters depend on the processing algorithms and the software used for calculation. However, a number of studies point towards a reduction of cerebral blood volume (CBV) below 2 ml/100 g as a critical threshold that identifies infarct core. Large CBV lesions are associated with poor outcome even in the context of recanalization. The extent of early ischemic signs on non-enhanced CT remains the main parameter from CT imaging to guide acute reperfusion treatment. Nevertheless, perfusion CT increases diagnostic and therapeutic certainty in the acute setting. Similar to stroke MRI, perfusion CT enables the identification of tissue at risk of infarction by the mismatch between infarct core and the larger area of critical hypoperfusion. Further insights into the validity of perfusion parameters are expected from ongoing trials of mechanical thrombectomy in stroke.

  11. CT findings of infant epilepsy

    International Nuclear Information System (INIS)

    Hojoh, Hiroatsu; Kataoka, Kenkichi; Nakagawa, Yoshihiro; Nakano, Shozo; Tomita, Yutaka.

    1982-01-01

    CT diagnosis of infantile epilepsy was evaluated. High incidence of abnormal CT findings in infantile spasms and Lennox-Gastaut syndrome was same as in other reports. Comparison between CT findings and neurological complications and that between CT findings and electroencephalogram findings revealed a stronger relationship existing in the former. This suggested that CT is more useful as a measure to detect underlying diseases which are due to organic change of the brain to cause epilepsy, rather than as that to disclose epileptic primary lesions of functional change. (Ueda, J.)

  12. con mala calidad de vida

    Directory of Open Access Journals (Sweden)

    Agustín Martín-Rodríguez

    2007-01-01

    Full Text Available En este estudio ex post facto se ha analizado si los familiares de pacientes con mala calidad de vida presentan diferencias en las variables clínicas de personalidad y relaciones familiares en función de que el paciente haya estado o no ingresado en una Unidad de Cuidados Intensivos. Seleccionamos dos grupos: 29 familiares de pacientes traumatizados graves transcurridos cuatro años de su ingreso en una UCI de Traumatología y con mala calidad de vida (debido a secuelas físicas y/o psicológicas tras el ingreso, tales como traumatismos craneoencefálicos, politraumatismos y tetraplejias traumáticas y 32 familiares de pacientes con mala calidad de vida con cuatro años de evolución de su enfermedad física (hipertensión, diabetes, artritis reumatoide y síndrome de intestino irritable que no han estado ingresados en la UCI. Para alcanzar nuestro objetivo empleamos una Encuesta Psicosocial y los siguientes instrumentos: Cuestionario de Análisis Clínico, Escala de Clima Social en la Familia y Escala de Adaptación Psicosocial de la Enfermedad. Los resultados mostraron que los familiares de pacientes con mala calidad de vida que estuvieron ingresados en la UCI hace cuatro años, presentan diferencias significativas en las variables agitación y expresividad comparados con los familiares de pacientes con mala calidad de vida que no han estado ingresados en la UCI.

  13. Brain tumor and CT, 1

    International Nuclear Information System (INIS)

    Suzuki, Nobuyuki; Katada, Kazuhiro; Shinomiya, Youichi; Sano, Hirotoshi; Kanno, Tetsuo

    1981-01-01

    It is very important for a neurosurgeon to know the consistency of a brain tumor preoperatively, since the information which is of much use in indicating the likely difficulty of the operation, which operative tools should be selected, the amount of bleeding to be expected from the tumor, and so on. The authors, therefore, tried to evaluate the consistency of brain tumors preoperatively 27 cases in which the margin of the tumor was made clear with a homogeneous stain were studied concerning the relationship between the tumor consistency and the CT findings. The results are as follows: 1) A higher CT number on a plain CT indicated a harder consistency of the tumor. 2) A lesser contrast index (CT number on enhancement CT/CT number on plain CT) showed a harder consistency of the tumor. (author)

  14. Dynamic CT myocardial perfusion imaging

    International Nuclear Information System (INIS)

    Caruso, Damiano; Eid, Marwen; Schoepf, U. Joseph; Jin, Kwang Nam; Varga-Szemes, Akos; Tesche, Christian; Mangold, Stefanie

    2016-01-01

    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.

  15. 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.

  16. CT in meningitis purulenta

    International Nuclear Information System (INIS)

    Yoshida, Akira; Fujiwara, Katsuhiko; Iino, Shigeru; Ochi, Masaharu; Yoshioka, Hiroshi

    1982-01-01

    Twenty nine infants with meningitis purulenta were classified into 5 groups according to CT findings in the acute stage: cerebral infarction group, subdural hygroma group, ventricular enlargement group, and a group of other diseases. In each group, clinical findings, surgical procedures and prognosis were evaluated. In the cerebral infarction group, although 3 of 4 patients underwent V-P shunt or subdural drainage, remarkable sequelae were found in all the cases. Of 4 subdural hygroma patients, 2 had subdural drainage, and 4 of 8 patients with ventricular enlargement underwent V-P shunt. All the patients of the two groups had favorable prognosis without any sequela. A patient with cerebral herniation in the group of other diseases died in its acute stage. Eleven infants without abnormal CT findings showed normal psychomotor development. (Ueda, J.)

  17. CT of maxillofacial injury

    International Nuclear Information System (INIS)

    DeLaPaz, R.; Brant-Zawadzki, M.; Rowe, L.D.

    1986-01-01

    Computed tomography has the ability to evaluate maxillofacial trauma quickly. The well-known contrast resolution capabilities of CT play a role in the usefulness of this modality. However, it is the image manipulation capability which is of singular advantage in these cases. The spatial resolution of computed tomography has matched that of conventional pluridirectional tomography in current generation equipment. Since a set of axial CT sections can be obtained with automatic table incrementation within 12 minutes, the information content per time of study ratio is improved over that of conventional tomography, despite the fact that image reformation requires extra time on the part of the radiologist. Radiation savings are significantly in favor of computed tomography as well. In the authors' experience, computed tomography is the primary diagnostic imaging modality used in the evaluation of complex facial trauma, after routine screening films are obtained

  18. CT scans in encephalitis

    International Nuclear Information System (INIS)

    Imanishi, Masami; Morimoto, Tetsuya; Iida, Noriyuki; Hisanaga, Manabu; Kinugawa, Kazuhiko

    1980-01-01

    Generally, CT scans reveal a decrease in the volume of the ventricular system, sylvian fissures and cortical sulci in the acute stage of encephalitis, and softening of the cerebral lobes with dilatation of the lateral ventricles and subarachnoidian dilated spaces in the chronic stage. We encountered three cases of encephalitis: mumps (case 1), herpes simplex (case 2), and syphilis (case 3). In case 1, brain edema was seen in the acute stage and brain atrophy in the chronic stage. In case 2, necrosis of the temporal pole, which is pathognomonic in herpes simplex encephalitis, was recognized. And in case 3, multiple lesions whose CT appearance was enhanced by contrast materials were found scattered over the whole brain. These lesions were diagnosed as inflammatory granuloma by histological examination. (author)

  19. CT and MR angiography

    International Nuclear Information System (INIS)

    Bert, A.L.; Marshal, G.

    1995-01-01

    CT-angiography is a new vessel imaging technique based on the volumetric scanning of the region of interst during the first pass of IV bolus injection of contrast medium. MR-angiography is a titally noninvasive technique. The differentiation of flowing blood from the adjecent stationary tissues is based on the detection of blood motion. The flowing blood is highlighted with white light. CT- and MR-angiographic techniques are used to establish% stenoses and occlusions in intracranial arteries; aneurisms; trombosis of intracranial veins and venous angioma; diseases of neck vessels, thoracic vessels, abdominal vessels. Blood flow direction in cirrotic patients with portal hypertension can be determined in the portal vein, as well as the presence of thrombosis

  20. CT findings in mucopolysaccharidoses

    International Nuclear Information System (INIS)

    Tsuchida, Tomio; Nemoto, Shigeru; Fujiwara, Kazue; Hayakawa, Isao; Nihei, Kenji.

    1981-01-01

    The CT findings for four patients with mucopolysaccharidosis were analyzed using a Delta scan-25 (Ohio Nuclear). In three cases of Hunter's syndrome (MPS IIA 13-year-old male, MPS IIB 12-year-old male, and 25-year-old male), a dilatation of the cortical sulci was observed. Moderate dilatations were also seen in the basal cistern, the quadrigeminal cistern, and the ambient cistern. In one case of Hunter's syndrome, a low-density area was observed in the bilateral tharamic regions. An irregular low-density area was also seen in the white matter in some cases. PVL was not apparent in any case. Marked ventricular dilations were observed in cases with mental retardation, for example, in one case of Hurler's syndrome (8-year-old male) and one case of MPS IIA. The circulation and absorbtion of CSF in cortical snbarachnoid spaces were supposed to be moderately retarded by metrizamide CT cisternography. (author)