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Abstract #4513

Velocity Selective Prepared Non-Contrast Enhanced MR Angiography using Phase Sensitive Reconstruction

Xinzeng Wang 1 , Joshua S Greer 1,2 , Shu Zhang 1 , and Ananth J Madhuranthakam 1,3

1 Radiology, UT Southwestern Medical Center, Dallas, Texas, United States, 2 Bioengineering, UT Dallas, Dallas, Texas, United States, 3 Advanced Imaging Research Center, UT Southwestern Medical Center, Dallas, Texas, United States

Velocity selective preparation (VSP) allows non-contrast enhanced MR angiography with minimal background signal in a single acquisition. However, the empirical velocity encoding used with VSP leads to venous signal contamination. In this work, we present a phase sensitive reconstruction combined with VSP that can determine the flow direction and can potentially differentiate arterial and venous signal with background signal suppression in a single acquisition. The proposed method successfully determined the flow direction in a flow phantom with good background suppression. The phase sensitive reconstruction also determined the flow direction in the popliteal artery of the lower leg in normal volunteers.

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