An evaluation of the effects of susceptibility changes on the water chemical shift method of temperature measurement in human peripheral muscle

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Abstract
Divergencies between chemical shift measurements of temperature and directly measured values using optical sensors have been studied in vivo in human peripheral muscle with the assistance of a variety of experimental and theoretical techniques. These include the modeling of both thermal and susceptibility changes using two‐ and three‐dimensional finite element methods, as well as the use of multi‐wavelength near infrared observations. The conclusion of these studies is that a simple temperature calibration is not accessible, with results affected by the complex response of the tissue itself.

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