Pulse energy SAR measurement method (NEMA standard MS-8) uses current sensing flux loops to measure coil power loss, which varies in different imaging conditions. Modeling results suggest that using multiple flux loops distributed around Tx coil, as presently defined by the standard, may not give accurate results. For whole body birdcage coil loaded with a human subject, single flux loop spaced from endring and positioned at 3 or 9 o’clock may give more accurate results.
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