Peripheral MR Angiography using Fourier Velocity Encoding and Dynamic Reconstruction

Recently, non-contrast-enhanced MR angiography techniques have been proposed for the increased concern of nephrogenic systemic fibrosis caused by gadolinium-based contrast agents. Recently, Quiescent-interval single-shot (QISS) MRA technique was developed to resolve these problems. QISS uses saturation RF pulse and one-shot balanced SSFP technique to overcome these issues.2 However, QISS technique needs multiple RF pulses to saturate background and fat signal and these multiple RF pulses can cause the high SAR. In this work, we propose a new MRA technique using the Fourier velocity encoding and dynamic reconstruction, which could eliminate background signals without saturation pulses.

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