Abstract #3796
Increasing Spatial Resolution of Real-Time Cardiac Cine MRI Using Radial k-space Undersampling with Golden Angle Ratio and Block-Wise Low Rank Contraint
Elwin Bassett 1,2 , Ganesh Adluru 2 , Promporn Suksaranjit 3 , Brent D. Wilson 3 , Edward VR DiBella 2 , and Daniel Kim 2
1
Physics, University of Utah, Salt Lake City,
Utah, United States,
2
UCAIR,
Radiology, University of Utah, Salt Lake City, Utah,
United States,
3
Cardiology,
Internal Medicine, University of Utah, Salt Lake City,
Utah, United States
We sought to improve our previously described rapid
real-time cine MRI with Cartesian undersampling and
temporal total variation (TTV) constraint reconstruction
by using a combination of radial k-space sampling and
block-wise low-rank (BWLR) constraint. We imaged a
resolution phantom, and our results show that BWLR
produces 76% higher effective spatial resolution than
TTV. We imaged 14 patients and 1 volunteer. Our
experiments show that, compared with TTV, BWLR yields
17% higher effective spatial resolution without
sacrificing diagnostic confidence determined by 2
cardiologists.
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