Abstract #1590

Performance comparison of using an external 16-channel transmit array vs. using 16 elements of a 32-channel receive array as transceivers at 10.5 T

Bei Zhang¹, Gregor Adriany², Navid Pourramzan Gandji³, Qing X. Yang³, Brian Rutt⁴, Jeramie Radder², Lance DelaBarre², Myung Kyun Woo², Kamil Ugurbil², and Riccardo Lattanzi^5,6

¹Advanced Imaging Research Center, UT Southwestern Medical Center, Dallas, TX, United States, ²Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, MN, United States, ³Department of Radiology, Pennsylvania State College of Medicine, Hershey, PA, United States, ⁴Department of Radiology, Stanford University, Stanford, CA, United States, ⁵Center for Advanced Imaging Innovation and Research (CAI2R) and Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, NY, United States, ⁶The Vilcek Institute at NYU Langone Health, New York, NY, United States

Shielding effects associated with surrounding the receive array with an external transmit (Tx) array could decrease the signal-to-noise ratio (SNR) at 10.5 T. Two Tx approaches were compared: using 16 receive elements as transceivers vs. using a 16-channel external transmit array. For both cases, the effect of using high-permittivity material (HPM) was evaluated. Our simulation results showed that performance was larger for the transceivers and further increased with HPM. This suggests that the additional complexity associated with constructing a multi-element transceiver array compared to using an external transmitter could be justified for 10.5T imaging by the expected gain in performance.

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