Abstract #0789

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

André Fischer^1,2, Anne Menini¹, Aurelien Bustin^1,3, 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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