Abstract #0218

A 16-Channel RF Receive Array with Integrated B0-shim Capability for Anesthetized Monkey Whole Brain Imaging at 7T

Yang Gao^1,2, Azma Mareyam², Xiaotong Zhang¹, Yi Sun³, Thomas Witzel^2,4, Nicolas Arango⁵, Irene Kuang⁵, Jacob White⁵, Anna Wang Roe¹, Lawrence Wald^2,4, and Jason Stockmann^2,4

¹Interdisciplinary Institute of Neuroscience and Technology, Qiushi Academy for Advanced Studies, College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, China, ²Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States, ³MR Collaboration Northeast Asia, Siemens Healthcare, Hangzhou, China, ⁴Harvard Medical School, Boston, MA, United States, ⁵Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, United States

To mitigate signal dropout in EPI images due to local B0 inhomogeneities inevitably caused by craniotomies and chamber implantations needed for multimodal studies, we designed a custom 16-channel tight-fit receive array, with each receive element integrated with DC pathway for multi-coil B0 shimming. The feasibility of constructing high-density receive array (5cm diameter loop elements) integrated with B0-Shim has been demonstrated. With DC-enabled higher-order local B0 shimming, obvious improvement in recovering local signal drop out and image distortion around brain surgery region, implying its promising application in high-resolution multi-modal monkey neuroimaging.

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