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Abstract #0559

Simultaneous acquisition of spatially-registered gray- and black-blood images of peripheral arteries with 3D double-echo steady-state (DESS) at 3T

Michael C Langham 1 , Benoit Desjardins 1 , Erin K Englund 1 , Emile R Mohler 2 , Thomas F Floyd 3 , and Felix W Wehrli 1

1 Radiology, University of Pennsylvania, Philadelphia, Pennsylvania, United States, 2 Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States, 3 Anesthesiology, Stony Brook University Medical Center, Stony Brook, New York, United States

We describe a new application of 3D double-echo steady-state (DESS), allowing simultaneous acquisition of spatially-registered gray and black blood images, which have the potential to address several limitations of MR angiography. 3D DESS was used to acquire gray and black blood images of the femoropopliteal and infra-popliteal arteries in healthy volunteers and patients with peripheral artery (PAD). It is shown that high-resolution dual-contrast structural 3D DESS is able to provide detailed information on vessel wall thickening, luminal geometry and calcification. Pairing 3D DESS with non-contrast MRA has the potential to improve diagnosis of PAD.

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