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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