Abstract #4260

High Efficiency Coronary MRA: Beyond the Quiescent Period

Jianing Pang¹, Yuhua Chen^1,2, and Debiao Li^1,3

¹Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States, ²Department of Computer and Information Science, University of Pennsylvania, Philadelphia, PA, United States, ³Bioengineering, University of California, Los Angeles, CA, United States

Current motion compensation strategies for whole-heart coronary MRA only accept data acquired during specific motion phases, thus significantly reduce the imaging efficiency. In this work, we developed a reconstruction framework based on 4D coronary MRA that allowed one to increase the cardiac gating efficiency by accepting cardiac phases beyond the quiescent period, while minimizing the associated cardiac motion artifacts through non-rigid motion correction. Preliminary results from healthy subjects showed that the proposed method significantly improved the imaging efficiency, aSNR, and coronary sharpness compared with images reconstructed from the quiescent period.

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