Meeting Banner
Abstract #0583

Safety Assessment of Custom-Built Multi-Channel RF Coils: EM Modeling Uncertainties

Alireza Sadeghi-Tarakameh1, Jerahmie Radder1, Russell L. Lagore1, Nader Tavaf1, Xiaoxuan He1, Andrea Grant1, Lance DelaBarre1, Luca Vizioli1, Xiaoping Wu1, Edward Auerbach1, Steen Moeller1, Gregor Adriany1, Gregory J. Metzger1, Pierre‐Francois Van de Moortele1, Essa Yacoub1, Kamil Ugurbil1, and Yigitcan Eryaman1
1Center for Magnetic Resonance Research (CMRR), University of Minnesota, Minneapolis, MN, United States


Multichannel transmit (Tx) arrays are essential for ultra-high fields. In the absence of commercial options, such arrays must be built in-house. Prior to human imaging, however, safe operations limits for specific absorption rate (SAR) must be established. This is done using EM simulations, the accuracy of which has to be verified by comparing measured and simulated data. Unfortunately, EM simulations may not fully represent experimental conditions, especially for complex transmitter designs. In this work, we propose a numerical approach to determine uncertainties encountered in EM modeling that allows the determination of safe operation limits despite EM modeling errors.

This abstract and the presentation materials are available to members only; a login is required.

Join Here