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Abstract #0594

Complex-Valued Spatial-Temporal Super-Resolution Combined with Multi-Band Technique on T2*-Weighted Dynamic MRI

Duohua Sun1, Jean-Philippe Galons2, Chidi Ugonna1, Silu Han1, Mahesh Keerthivasan3, Marc Lindley4, and Nan-kuei Chen1
1Biomedical Engineering, The University of Arizona, Tucson, AZ, United States, 2Medical Imaging, The University of Arizona, Tucson, AZ, United States, 3Siemens healthineers, Tucson, AZ, United States, 4GE Healthcare, Waukesha, WI, United States

We present an approach for improving spatial and temporal resolution of complex-valued T2*-weighted dynamic MRI. Compared with the conventional magnitude-valued super-resolution approaches, our technique utilizes phase information to better recover signal loss caused by susceptibility gradients and generate finer representations of temporal dynamic signal variation. Results from numerical and hybrid simulation show that promising improvements in image resolution, susceptibility artifact reduction and temporal signal variation representation can be achieved using our complex-valued super-resolution MRI scheme when compared to magnitude-valued super-resolution.

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