4406 ISMRM Abstract

Design of a universal RF-shimming drive mode for head and neck imaging at 7 Tesla using a 16-channel pTx array

4406 · Progress & Challenges in RF Coils I · Wednesday, 7 June, 3:45 PM–4:45 PM · Exhibition Halls D/E

Keywords: RF Pulse Design & Fields

Accepted

Ehsan Kazemivalipour ^1,2, Markus W May^3,4, D. Rangaprakash^1,2, Berkin Bilgic^1,2,5, Jason Stockmann^1,2, Robert L Barry^1,2, Boris Keil^6,7, Lawrence L Wald^1,2,5, Bastien Guerin^1,2

¹A. A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Boston, United States of America

²Harvard Medical School, Boston, United States of America

³Erwin L. Hahn Institute for MRI, University Duisburg-Essen, Essen, Germany

⁴High-Field and Hybrid MR Imaging, University Hospital Essen, Essen, Germany

⁵Harvard-MIT Division of Health Sciences and Technology, Cambridge, United States of America

⁶Institute of Medical Physics and Radiation Protection, Department of Life Science Engineering, Mittelhessen University of Applied Sciences, Gießen, Germany

⁷Center for Mind, Brain and Behavior (CMBB), Philipps-University Marburg, Marburg, Germany

Presenting Author: Ehsan Kazemivalipour

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References

1. May MW, Hansen SJD, Mahmutovic M, et al. A patient-friendly 16-channel transmit/64-channel receive coil array for combined head-neck MRI at 7 Tesla. Magn Reson Med. 2022;88(3):1419-1433.

2. Massire A, Cloos MA, Luong M, et al. Thermal simulations in the human head for high field MRI using parallel transmission. J Magn Reson Imaging. 2012;35(6):1312-1321.

3. Makris N, Angelone L, Tulloch S, et al. MRI-based anatomical model of the human head for specific absorption rate mapping. Med Biol Eng Comput. 2008;46(12):1239-1251.

4. Noetscher GM. The CAD-Compatible VHP-Male Computational Phantom. In Makarov SN, Noetscher GM, Nummenmaa A, (Eds). Brain and Human Body Modeling 2020: Computational Human Models Presented at EMBC 2019 and the BRAIN Initiative(R) 2019 Meeting. Cham (CH) 2021:309-323.

5. Makarov SN, Noetscher GM, Yanamadala J, et al. Virtual Human Models for Electromagnetic Studies and Their Applications. IEEE Rev Biomed Eng. 2017;10:95-121.

6. Guerin B, Gebhardt M, Cauley S, et al. Local specific absorption rate (SAR), global SAR, transmitter power, and excitation accuracy trade-offs in low flip-angle parallel transmit pulse design. Magn Reson Med. 2014;71(4):1446-1457.

7. Eichfelder G, Gebhardt M. Local specific absorption rate control for parallel transmission by virtual observation points. Magn Reson Med. 2011;66(5):1468-1476.

8. Lee J, Gebhardt M, Wald LL, et al. Local SAR in parallel transmission pulse design. Magn Reson Med. 2012;67(6):1566-1578.

9. Grissom W, Yip CY, Zhang Z, et al. Spatial domain method for the design of RF pulses in multicoil parallel excitation. Magn Reson Med. 2006;56(3):620-629.

10. Brunner DO, Pruessmann KP. Optimal design of multiple-channel RF pulses under strict power and SAR constraints. Magn Reson Med. 2010;63(5):1280-1291.

11. Gras V, Vignaud A, Amadon A, et al. Universal pulses: A new concept for calibration-free parallel transmission. Magn Reson Med. 2017;77(2):635-643.

Cite this abstract

http://echo.ismrm.org/p/ISMRM2023/4406