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Abstract #3794

Improved Image Quality of Time Resolved Contrast Enhanced MRA using Compressed Sensing, Parallel Imaging and Singular Value Threshold

Yijing Wu 1 , Kevin M Johnson 1 , Patrick A Turski 2 , Kai Niu 1 , YinSheng Li 1 , GuangHong Chen 1 , and Chuck A Mistretta 1

1 Medical Physics, University of Wisconsin, Madison, WI, United States, 2 Radiology, University of Wisconsin, Madison, WI, United States

Time-resolved 3D contrast-enhanced MR angiography (TR CE-MRA) often requires highly accelerated image acquisition to achieve clinically desired temporal and spatial resolutions. Combination of VIPR acquisition with improved multi-channel coils and advanced reconstruction techniques such as Parallel Imaging (PI) and Compressed Sensing (CS), offers substantially greater acceleration than past methods. However, image quality is restricted by poor SNR due to the limited amount of data used for reconstruction. In this work, we explore the temporal similarity of TR CE-MRA to further improve the SNR and image quality.

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