MR angiography of the aortic arch vessels and upper extremities.

MR angiography of the aortic arch vessels and upper extremities is a noninvasive alternative to conventional catheter angiography without the risks of stroke or the potential toxicity of iodinated contrast. The use of optimized, breath hold gadolinium-enhanced three-dimensional MR angiography provides excellent image quality with the capability of display options not available with conventional angiography. This article demonstrates the utility of this new technique in the diagnosis of congenital and acquired conditions of the supraaortic vascular system.