Abstract #1489

A 4-Channel iPRES-W AIR Coil Array for Simultaneous MR image Acquisition and Wirelessly-Controlled Localized B0 Shimming of the Spinal Cord

Jonathan D. Cuthbertson^1,2, Dean Darnell^1,2, Robert Stormont³, Fraser Robb³, Allen W. Song^1,2, and Trong-Kha Truong^1,2

¹Brain Imaging Analysis Center, Duke University, Durham, NC, United States, ²Medical Physics Graduate Program, Duke University, Durham, NC, United States, ³GE Healthcare, Aurora, OH, United States

B₀ inhomogeneities near air-tissue interfaces can cause distortions, signal loss, and incomplete fat suppression in many applications such as diffusion-weighted imaging of the spinal cord. Here, we develop a 4-channel iPRES-W AIR coil array to perform simultaneous imaging and wirelessly-controlled localized B₀ shimming of the cervical spinal cord. In vivo experiments showed a 58.5% reduction in B₀ root-mean-square-error (RMSE) after shimming the spinal cord using the iPRES-W AIR coil array, resulting in substantially reduced geometric distortions in diffusion-weighted images, ADC maps, and FA maps

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