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Abstract #3884

Accelerated 3D Time-Resolved MR Angiography Using Cartesian HYPR LR Reconstruction

Kang Wang1, Jiang Du2, Yijing Wu1, Reed F. Busse3, Kevin M. Johnson1, Frank R. Korosec1,4

1Medical Physics, University of Wisconsin-Madison, Madison, WI, USA; 2Radiology, University of California, San Diego, San Diego, CA, USA; 3Applied Science Laboratory, GE Healthcare, Madison, WI, USA; 4Radiology, University of Wisconsin-Madison, Madison, WI, USA

Simultaneous achievement of high spatial and temporal resolution has always been a challenge in contrast-enhanced MR angiography (CE-MRA). Several k-space undersampling methods have been reported in literature, including radial sampling, spiral sampling and Cartesian-based undersampling approaches. Meanwhile, novel reconstruction methods have been developed to exploit the temporal-spatial correlation in CE-MRA, such as HYPR and HYPR LR. Here we present a Cartesian implementation of HYPR LR, which fits most Cartesian k-space undersampling schemes, and has great simplicity. The proposed method may have great potential for clinic applications.