Navegando por Palavras-chave "artéria celíaca"

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    Angiorm sem contraste na avaliação do tronco celíaco e da artéria mesentérica superior: um estudo comparativo com a angiotc
    (Universidade Federal de São Paulo (UNIFESP), 2014-04-09) Cardia, Patricia Prando [UNIFESP]; Ippolito, Giuseppe D Ippolito [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Purpose: to evaluate the quality and diagnostic accuracy of the images obtained with non enhanced MR angiography (NEMRA) for the evaluation of the celiac trunk (CTR) and superior mesenteric artery (SMA), using CT angiography (CTA) as a reference standard. Methods: we prospectively evaluated 41 patients submitted contemporaneously to NEMRA and CTA of the main branches of the abdominal aorta. Two independent observers analyzed the quality and the accuracy of the images in the definition of the celiac trunk (CTR), left gastric artery (LGA), common hepatic artery (CHA), splenic artery (EA) and superior mesenteric artery (SMA). Kappa test was used to evaluate the NEMRA reproducibility and the agreement between NEMRA and CTA. We also evaluated the correlation and the overall accuracy of NEMRA to identify arterial stenosis using CTA as a reference standard. Results: the NEMRA provided diagnostic quality images of the CTR and the proximal portions of, LGA, CHA, EA and SMA respectively 87.8%, 43.9%, 51.2%, 51.2% and 90.2% of cases. The interobserver agreement was high (k: 0.70 to 0.95). In the assessment of CTR and SMA stenosis, NEMRA obtained respectively sensitivity of 100% and 100%, specificity of 87.5% and 94.2%, positive predictive value of 50% and 50%, negative predictive value of 100% and 100%, and accuracy of 88.8% and 94.5%. Conclusion: NEMRA provides images with quality comparable to CTA in the evaluation of the CTR and proximal portion of SMA and is an accurate method for detecting stenosis of these arterial segments.