Comparison of CT and MR angiography in evaluation of peripheral arterial disease before endovascular intervention.

BackgroundMultidetector computed tomography angiography (MDCTA) and magnetic resonance angiography (MRA) are accurate techniques for selecting patients with peripheral arterial disease for surgical and endovascular treatment. No studies in the literature have directly compared MDCTA and MRA to establish which one should be employed, in patients suitable for both techniques, before endovascular treatment.PurposeTo compare diagnostic performance of MDCTA vs MRA before endovascular intervention.Material and MethodsWe prospectively compared MDCTA (64 slices scanner) and MRA (1.5 T scanner; 3D gadolinium-enhanced bolus-chase acquisition plus time resolved acquisition on calves) to stratify 35 patients according to the TASC II score and a runoff severity score. We also evaluated the accuracy of both techniques in each arterial segment. Selective angiography performed during the treatment was the standard of reference.ResultsMDCTA and MRA accurately classify disease in the aorto-iliac (accuracy 0.92 for MDCTA an...