Abstract #2604

Breath-Hold Real-Time Phase Contrast MRI using Radial k-space Sampling and Compressed Sensing

Hassan Haji-Valizadeh¹, Elwin Bassett², Genesh Adluru³, Edward VR DiBella ³, and Daniel Kim³

¹Bioengineering, University of Utah, Salt Lake City, UT, United States, ²Physics, University of Utah, Salt Lake City, UT, United States, ³Radiology,UCAIR, University of Utah, Salt Lake City, UT, United States

Phase contrast (PC) MRI is a useful tool for assessing hemodynamic, but suffers from low data acquisition efficiency. In this study we compared real-time PC MRI between Cartesian and Radial undersampling trajectories. Our results show that both real-time MRI pulse sequences yield velocity measurements that agree well with those produced by reference breath-hold PC MRI pulse sequence. Compared with real-time MRI with Cartesian sampling, Radial sampling produced images with fewer artifacts. This study demonstrates feasibility of real-time PC MRI using radial k-space sampling and constrained reconstruction.

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