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Abstract #3227

MRI planning for SAR management in pTx systems

Joaquin L. Herraiz 1 , Yigitcan Eryaman 1,2 , Esra Abaci Turk 1 , Angel Torrado-Carvajal 1,3 , Adrian Martin 1,4 , Emanuele Schiavi 1,4 , Bastien Guerin 5 , Elfar Adalsteinsson 1,6 , Lawrence L. Wald 5,7 , Juan A. Hernandez-Tamames 1,3 , and Norberto Malpica 1,3

1 Madrid-MIT M+Vision Consortium in RLE, Massachusetts Institute of Technology, Cambridge, MA, United States, 2 Center for Magnetic Resonance Research,Department of Radiology, University of Minnesota, Minneapolis, MN, United States, 3 Medical Image Analysis and Biometry Laboratory, Universidad Rey Juan Carlos, Madrid, Spain, 4 Dept. of Applied Mathematics, Universidad Rey Juan Carlos, Mostoles, Madrid, Spain, 5 Martinos Center for Biomedical Imaging, Dept. of Radiology, MGH, Charlestown, MA, United States, 6 Dept. of Electrical Engineering and Computer Science, Harvard-MIT Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, United States, 7 Harvard-MIT Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, United States

Current approaches to acquire clinical 7-T MR data within acceptable SAR limits require imaging with reduced flip angle and/or number of slices, which reduces SNR/Contrast/Detectability, thereby undermining the potential benefits of high-resolution imaging. Parallel transmission RF pulse design has recently shown to be able to manage global and local SAR in 7-T systems if a correct patient head and torso model is known. Nevertheless, it is unclear if patient-specific SAR reduction methods could be implemented in a feasible way in the clinical practice in the near future. In this work, we propose an effective protocol for enabling patient-specific SAR modeling and reduction to utilize the full capability and clinical promise of 7-T MR imaging.

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