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Abstract #3946

Feasibility of 5-Minute Comprehensive Cardiac MR Examination Using Highly Accelerated Parallel Imaging and Compressed Sensing

Jian Xu1, 2, Li Feng1, Ricardo Otazo1, Alicia Yang1, Kai Tobias Block1, Barbara Srichai1, Ruth Lim1, Kelly Anne Mcgorty1, Joseph Reaume1, Leon Axe

1Center for Biomedical Imaging, Radiology,New York University, New York, NY, United States; 2PolyTechnic Institute of New York University and Siemens Medical Solutions USA Inc., New York, NY, United States; 3Polytechnic Institute of New York University, New York, NY, United States

The newly developed radial k-t SPARSE SENSE (RASPS) technique make it possible to further speed up the acquisition and increase the coverage with high temporal/spatial resolution without sacrificing SNR. In this study, we have incorporated dynamic 4D stack-of-star hybrid radial acquisitions with RASPS into this 5-min protocol, and the results of comparisons between RASPS and the previous approach using GRAPPA/TGRAPPA (PAT) for PERF, CINE and LGE imaging are presented.

Keywords

accelerated acceleration accelerations achieved acquisition acquisitions allow allowing amplification anatomy apex approaches array assessment axis biomedical body breath cardiac challenges cine clinical cohort coil combination comparable competing comprehensive compressed contraction contrast coronary coverage currently custom dependence determine developed diastole dose efficacy employed enables encoding enhancement ensure entire evaluation examination except fair feasibility final flash frames gadolinium good gradient healthy heart highly immunity improvements include incorporated initial institute intervals isotropic joint larger late male matrix measures minute minutes motion myocardial myocardium named needed noise null operator parallel partial partition patients performance perfusion pixel pixels planned polytechnic position practical precise prepared previous progress promises proposed protocol quality radial radiology rasps readout recently reconstruction recovery recruited relatively reported requirements resolution rest sacrificing sampling saturation selected selective sensing sequential short slew slice slices software space spatial specifically spokes stars subject subjects sufficient summarized table temporal thinner though transformation turbo type typical variation viability whole yang