Accuracy of digital subtraction angiography, computed tomography angiography, and magnetic resonance angiography in grading of carotid artery stenosis in comparison with actual measurement in an in vitro model.

Background: The aim of this study was to investigate the accuracy of digital subtraction angiography (DSA), computed tomography angiography (CTA), and magnetic resonance angiography (MRA) in grading of carotid stenosis compared with actual measurement in an in vitro model.

Methods: Various grades of stenosis were created by adhering different amounts of silicone rubber sealant onto the inner wall of clear, radiolucent tubes. After DSA, CTA, and MRA, the tubes were transected with 1-mm interval through the plaques.

The corona mortis, a frequent vascular variant susceptible to blunt pelvic trauma: identification at routine multidetector CT.

Purpose: To determine if contrast-enhanced multidetector computed tomography (CT) can demonstrate the "corona mortis" (translated as "crown of death"), a common variant obturator artery originating from the external iliac artery system that is susceptible to pelvic trauma.

Methods And Materials: A representative case study is described. The authors evaluated 50 consecutive patients undergoing routine clinically indicated, standard protocol, venous phase contrast-enhanced multidetector CT of the pelvis, 25 with a 16-slice scanner and 25 with a 64-slice scanner.

Improved detection of renal vascular anatomy using multidetector CT angiography: Is 100% detection possible?

Background And Purpose: Multidetector CT angiography (MDCTA) is being used increasingly to evaluate vascular anatomy prior to donor nephrectomy. To improve the ability of MDCTA to predict donor renal anatomy, a novel protocol including four-phase imaging with three-dimensional reconstruction and maximum intensity projections (MIPs) was incorporated into the standard donor evaluation. The purpose of this study was to determine the results of this protocol.

Multidetector computerized tomography angiography to predict lumbar venous anatomy before donor nephrectomy.

Purpose: Multidetector computerized tomography angiography has been used to predict renal anatomy before donor nephrectomy. Unrecognized lumbar veins represent a significant risk during laparoscopic surgery but to our knowledge no previous group has attempted to predict lumbar veins with multidetector computerized tomography angiography before laparoscopic donor nephrectomy. We evaluated the ability of multidetector computerized tomography angiography to preoperatively predict the size and location of anomalous left lumbar veins.