Computed Tomography Angiography of the Renal and Mesenteric Vasculature: Concepts and Applications
Department of Radiology, Johns Hopkins Hospital, Baltimore, MD, USA. Seminars in roentgenology
(Impact Factor: 0.71).
04/2011; 46(2):115-24. DOI: 10.1053/j.ro.2010.08.001
Available from: ajronline.org
The American journal of roentgenology, radium therapy, and nuclear medicine 07/1968; 103(2):441-3. DOI:10.2214/ajr.103.2.441
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ABSTRACT: The recent introduction of multidetector computed tomography scanners has significantly improved computed tomography angiographic (CTA) applications, especially for the evaluation of medium- and small-arterial structures. CTA of the superior mesenteric artery has been reported previously. However, there have been few systematic and detailed reviews of the superior mesenteric artery pathologies that use CTA. The purpose of this pictorial essay is mainly to review the various superior mesenteric artery pathologies at CTA with our own experiences.
Canadian Association of Radiologists Journal 05/2014; 65(3). DOI:10.1016/j.carj.2013.10.001 · 0.52 Impact Factor
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ABSTRACT: To study the manifestations of arc of Riolan expansion (ARE) using multi-detector computed tomography angiography (MDCTA).
The manifestations and clinical data of 626 consecutive mesentery CTA images were retrospectively analyzed. The 47 cases with ARE and 47 patients without expansion were involved. The average diameter of arc of Riolan was measured. Two radiologists after reaching consensus analyzed the shapes of mesenteric artery, CT findings and the occurrence and causes of ARE.
The mean diameter of arc of Riolan was 1.2 mm, 4.6 mm, 2.5 mm, 2.3 mm, 1.9 mm, 2.5 mm, and 2.0 mm at baseline and following obstruction of superior mesenteric artery (SMA), stenosis of SMA, obstruction of inferior mesenteric artery (IMA), stenosis of IMA, colon cancer, and active ulcerative colitis, respectively. The expansion of arc of Riolan was the most significant following obstruction of SMA. The diameters of arc of Riolan were significantly different between the upward flow group and the downward or the two-way flow groups, and between the colon tumor group and the active ulcerative colitis group. CT findings such as bowel wall thickening, contrast enhancement, intestinal obstruction, marginal artery expansion, lymph node enlargement varied and were help to identify the cause of ARE.
ARE often suggests the occurrence of obstructed intestinal feeding artery or intestinal lesions. MDCTA can clearly display the situation of arc of Riolan and collateral circulation, and together with CT symptoms, can guide the selection of diagnosis and treatment schemes in clinic.
International Journal of Clinical and Experimental Medicine 06/2015; 8(3):3193-201. · 1.28 Impact Factor
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