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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