2023
DOI: 10.1002/mrm.29913
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Local SAR management strategies to use two‐channel RF shimming for fetal MRI at 3 T

Filiz Yetisir,
Esra Abaci Turk,
Elfar Adalsteinsson
et al.

Abstract: PurposeThis study evaluates the imaging performance of two‐channel RF‐shimming for fetal MRI at 3 T using four different local specific absorption rate (SAR) management strategies.MethodsDue to the ambiguity of safe local SAR levels for fetal MRI, local SAR limits for RF shimming were determined based on either each individual's own SAR levels in standard imaging mode (CP mode) or the maximum SAR level observed across seven pregnant body models in CP mode. Local SAR was constrained either indirectly by further… Show more

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