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Abstract #0789

Fully self-gated motion compensated cine reconstruction from free-breathing ungated 2D radial cardiac MRI data

André Fischer1,2, Anne Menini1, Aurelien Bustin1,3, Kevin M Johnson4, Christopher J Francois5, and Anja C.S. Brau2

1GE Global Research, Garching bei München, Germany, 2Cardiac Center of Excellence, GE Healthcare, Garching bei München, Germany, 3Computer Science, Technical University Munich, München, Germany, 4Medical Physics, University of Wisconsin, Madison, WI, United States, 5Radiology, University of Wisconsin, Madison, WI, United States

Cardiac MRI is affected by both cardiac and respiratory motion. While ECG-gated imaging in breath hold is the clinical method of choice, free-breathing methods are needed in patients with limited breath hold capability. This works describes a method to obtain free-breathing cine datasets with high SNR and high spatial resolution (1.4mm in-plane) from a completely self-gated Golden Angle radial scan within an 11s scan time. The motion compensated reconstruction technique takes advantage of calibrated displacement fields extracted from the radial data to recover motion artifact-free cardiac phases. Beyond cine imaging, contrast-enhanced cardiac imaging can also be expected to benefit from this motion compensated reconstruction strategy.

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