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Calibration-free regional RF shims for MR spectroscopy
[article]
2020
biorxiv/medrxiv
pre-print
Purpose: Sufficient control of the RF transmit field (B1+) in small regions-of-interest (ROIs) is critical for single voxel MR spectroscopy at ultra-high field. Static RF shimming, using parallel transmit (pTx), can improve B1+, but must be calibrated for each participant and ROI, which limits its applicability. Additionally, specific-absorption-rate (SAR) becomes hard to predict. This work aimed to find RF shims, which can be applied to any participant, to produce the desired |B1+| within
doi:10.1101/2020.07.24.20161141
fatcat:ddpk6notgrcrngsyuy53irdk5m