Abstract #4083

Improved Brain Imaging with an Integrated High-Permittivity Material Head Array

Karthik Lakshmanan^1,2, Jerzy Walczyk^1,2, Sebastian Rupprecht³, Michael T Lanagan³, Qing X Yang³, Ryan Brown^1,2,4, and Christopher M Collins^1,2,4

¹Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, NYU School of Medicine, New york, NY, United States, ²Center for Advanced Imaging Innovation and Research (CAI2R), Department of Radiology, NYU School of Medicine, New york, NY, United States, ³HyQRS LLC, State College, PA, United States, ⁴The Sackler Institute of Graduate Biomedical Science, New york, NY, United States

High electric permittivity materials (HPM) have been used to improve transmit efficiency (B₁⁺) and receive sensitivity in targeted regions. In this work we demonstrate improvements in the entire brain by designing and implementing an integrated HPM shell for a head coil with 8-channel transmit and 30-channel receive arrays. The coil with HPM insert provides gains of approximately 55% in transmit efficiency and 20% in SNR compared to an identical coil without the insert.

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