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Abstract #4038

Validation and Safety Approval of a Dual-Mode Head Coil for pTx Applications In Vivo at 7 Tesla

Sydney N. Williams1, Sarah Allwood-Spiers2, Paul McElhinney1, Yuehui Tao3, John E. Foster2, David A. Porter1, and Shajan Gunamony1,4
1Imaging Centre of Excellence, University of Glasgow, Glasgow, United Kingdom, 2MRI Physics, NHS Greater Glasgow and Clyde, Glasgow, United Kingdom, 3Imaging Centre of Excellence, Siemens Healthcare Ltd. United Kingdom, Glasgow, United Kingdom, 4MR CoilTech, Glasgow, United Kingdom

Following regulatory approval of single-transmit MRI at 7 tesla, there is a rapidly growing interest in clinical MRI at this field strength. However, the wider use of diagnostic MRI at 7T will require imaging in parallel-transmit (pTx) mode to reduce B1+ inhomogeneity. Previous work introduced a dual-mode head coil that operates in both transmit modes and this study investigates the use of this coil for the pTx case. It also describes the safety procedure that was followed to ensure safe operation for human scanning using the real-time SAR supervision on a commercial scanner.

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