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Abstract #4894

Reconstructing real-time exercise stress cine images with multiple sets of sensitivity maps

Chong Chen1, Yingmin Liu1, Orlando Simonetti1, and Rizwan Ahmad1

1The Ohio State University, Columbus, OH, United States

Motivated by the changing sensitivity maps due to exaggerated chest wall motion in real-time stress cardiac MRI (CMR), we utilize ESPIRiT-based multiple sets of sensitivity maps in a SENSE-based reconstruction method to reduce image artifact. The proposed method was tested on twelve volunteers and compared with the images reconstructed using a temporally invariant single set of sensitivity maps as well as a temporally varying single set of sensitivity maps. It was demonstrated that using multiple sets of sensitivity maps leads to significant reduction in image artifact.

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