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Abstract #3130

Velocity-selective unenhanced peripheral MR angiography: Initial clinical testing compared with digital subtraction angiography

Taehoon Shin1, Rajiv G Menon2, Devin Watson3, Rajabrata Sarkar3, Sanjay Rajagopalan4, and Robert Crawford3

1Diagnostic Radiology and Nuclear Medicine, University of Maryland, Baltimore, MD, United States, 2New York University, New York, NY, United States, 3Vascular Surgery, University of Maryland, Baltimore, MD, United States, 4Cardiovascular Medicine, Case Western Reserve, Cleveland, OH, United States

We performed initial clinical testing of velocity-selective magnetization-prepared MR angiography (VS-MRA) in 31 patients with peripheral arterial disease with digital subtraction angiography (DSA) serving as the reference standard. The image quality score of VS-MRA was 2.8±0.6 in the scale of 0-3 (0: non-diagnostic, 3: excellent). The sensitivity and specificity for detecting significant stenosis were 90.1 % and 96.2%, respectively on a per-segment basis (n=286), and were 92.7% and 92.0 %, respectively on a per-region basis (n=105). The Fleiss-Cohen κ value for the agreement between VS-MRA and DSA was 0.91 on a per-segment basis and 0.88 on a per-region basis.

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