Abstract #0676

A 16-Ch Elastic Thin RF Coil Array for Whole Brain Concurrent TMS-fMRI

Yunsuo Duan^1,2, Feng Liu^1,2, Rachel Marsh^1,2, Matthew Riddle^1,2, Gauraw H. Patel^1,2, Lawrence S. Kegeles^1,2, John Thomas Vaughan³, and Jack Grinband^1,2

¹MR Research, Department of Psychiatry, Columbia University, New York, NY, United States, ²New York State Psychiatric Institute, New York, NY, United States, ³Columbia MR Research Center, Columbia University, New York, NY, United States

Synopsis

Keywords: RF Arrays & Systems, RF Arrays & Systems, TMS

Motivation: The low TMS efficiency and complexity of the setup for whole brain concurrent TMS-fMRI remain challenging due to the lack of feasible RF coil arrays.

Goal(s): We proposed a 16-channel elastic whole brain RF coil array to increase the TMS efficiency and flexibility.

Approach: We developed a highly flexible close-fitting coil former with 3D printing and evenly placed the 16 coil loops made of flexible shielding sleeves on the former.

Results: The measured TMS efficiency was about 80% at the inner wall of the coil array. The SNRs of experimental images were comparable with those acquired using Nova 32-ch coil array.

Impact: The proposed 16-ch elastic coil array was capable of significantly improving the TMS efficiency and simplifying the setup of whole brain concurrent TMS-fMRI.

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