MR angiography of the abdomen and pelvis.

Magnetic resonance (MR) angiographic techniques optimize the visualization of the vasculature at MR imaging. MR angiography has several advantages over Doppler ultrsonography and computed tomographic angiography, with adaptable protocols to answer specific clinical questions. Novel noncontrast MR angiographic techniques now enable assessment of the abdominopelvic vasculature without administration of gadolinium-based contrast media. This article reviews MR angiographic techniques and discusses applications for arterial and venous evaluation in the abdomen and pelvis.