Tomografia computarizada sin contraste full#

yodados aplicados en radiologa (en la tomografa axial computarizada) o. La visualización de la médula y la cola de caballo, sin necesidad de contraste intratecal, hace que la RM sea el examen ideal para identificar las raíces nerviosas conjuntas, ofreciendo una ventaja clara sobre la TAC. Los contrastes ecogrficos o ecopotenciadores son sustancias que se introducen en el cuerpo. La RM es, en muchas ocasiones, superior a la TAC simple en el diagnóstico de las anomalías de las raíces nerviosas además la RM tiene la ventaja de los planos sagitales y coronales. Presentamos tres casos de raíces lumbares conjuntas intervenidos en el Servicio de Radiología del Hospital Addolorata de Roma y en el Servicio de Neurorradiología del Hospital Universitario de Roma “La Sapienza” entre 2001 y 2004, representando 0.25% de todos los 1200 pacientes evaluados mediante TAC y RM, y revisamos los aspectos diagnósticos presentados en la literatura mundial. Las raíces conjuntas frecuentemente se aprecian en la RM. Cursan habitualmente con dolor (episodios de lumbalgia y lumbociatalgia) y sin déficit motor ni sensitivo. La raíces lumbares pueden ser conjuntas o bífidas y frecuentemente son descubiertas en las autopsias clínicas. Las anomalías congénitas de los nervios raquídeos lumbares no son muy frecuentes y suelen ser difíciles de detectar en TAC sin contraste. In fact, the accurate information derived from MRI of multiple planes may be priceless for the preoperative and diagnostic evaluation of lumbosacral nerve root anomalies. MR imaging is a better diagnostic procedure (in comparison to CT) for the differentiation of nerve root anomalies and, in particular, coronal sections furnish a precise definition of the profile of the conjoined/enlarged rootlets. Las tomografas computarizadas se pueden realizar con y sin contraste, segn las circunstancias mdicas de cada caso. We report our experience with three cases of conjoined lumbosacral nerve roots and analyze the most important literature on this topic. Una tomografa computarizada sin contraste es una tomografa computarizada que se realiza sin el uso de un tinte especial destinado a hacer que los rganos se vean de manera ms visible, segn Johns Hopkins Medicine. Our study comprised three patients with conjoined lumbosacral nerve roots, representing 0.25% of a total of 1200 patients who underwent lumbosacral CT/MRI procedures in the Addolorata Hospital and in the Service of Neuroradiology of the University of Rome “La Sapienza” during the last three years (March 2001-March 2004). Firstly described as an incidental finding during autopsies or surgical procedures performed for lumbar disk herniations and often asymptomatic, lumbosacral nerve root anomalies have been more frequently described in the last years due to the advances made in radiological diagnosis (metrizamide myelography and CT, MRI). Generally speaking, these anomalies may consist of a bifid, conjoined structure, of a transverse course or of a characteristic anastomized appearance. Various types of anomalies of the lumbosacral nerve roots have been documented in the available international literature.

Tomografia computarizada sin contraste full#

Users should refer to the original published version of the material for the full abstract.Lumbosacral nerve root anomalies are a rare group of congenital anatomical anomalies.

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(English) Copyright of Anales de Radiologia, Mexico is the property of Sociedad Mexicana de Radiologia e Imagen A.C. Conclusions: The assessment of the DREAP using the scale that considers the number of interfascial planes affected by MDCT can be useful for staging this pathology in those patients in whom it is not possible to administer contrast medium. As well as a positive and negative predictive value of up to 100% and 98% respectively. Results: The obtained values indicate that there is a positive correlation between the MDCTSI and the DREAP by the number of interfascial planes affected, with a sensitivity and specificity of up to 88% and 100% respectively. Material and methods: Sixty patients who met the selection criteria and diagnosed with acute pancreatitis were included, for which the MDCTSI and DREAP were calculated by non-contrast-enhanced MDCT, using a modified scale that considers the number of interfascial planes affected. Abstract: Objective: To assess the correlation between the severity index by multidetector computer tomography (MDCTSI) and the degree of retroperitoneal extension of acute pancreatitis (DREAP) according to the number of interfascial planes affected, using multidetector computed tomography (MDCT) without contrast, in the staging of acute pancreatitis.