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Abstract #0175

Coil Design Impacts Image Encoding: Optimized 64-Channel Array Configurations for Diffusion-Weighted Imaging in 3T Cardiac MRI

Robin Etzel1,2, Choukri Mekkaoui3, Ekaterina S Ivshina4, Alina Scholz1, Markus W May1, Nicolas Kutscha1, Matthäus Poniatowski1, Chaimaa Chemlali1, Anpreet Ghotra1, Sam-Luca JD Hansen1, Timothy G Reese3, Lawrence L Wald3, Andreas H Mahnken2, and Boris Keil1
1Institute of Medical Physics and Radiation Protection, Department of Life Science Engineering, TH Mittelhessen University of Applied Sciences, Giessen, Germany, 2Philipps-University of Marburg, Department of Diagnostic and Interventional Radiology, Marburg, Germany, 3Harvard Medical School, Massachusetts General Hospital, Department of Radiology, A.A. Martinos Center for Biomedical Imaging, Boston, MA, United States, 4Princeton University, Princeton, NJ, United States

To determine the optimum configuration of a 64-channel array coil for highly accelerated in vivo cardiac diffusion-weighted imaging (DWI), the encoding capability and sensitivity of three 64-channel arrays were designed, constructed, and evaluated. Simultaneous multi-slice (SMS) acceleration enabled enhanced efficiency of the diffusion acquisitions. The array configuration with a non-uniformly distributed loop density showed the most favorable cardiac imaging performance in both SNR and SMS encoding power. Cardiac DWI of a healthy volunteer mirrors the findings from phantom evaluation and testing. Such technically advanced coils are an important component for translation of cardiac DWI to clinical settings.

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