Simulations of the magnetic and electric fields produced by RF coil commonly used at ultra-low field systems (from 0.05 to 0.1 tesla) have been performed. The highest SAR locations is present in tissues such as the nose and skull that are closest to the coil. Based on these simulations, the specific absorption rate (SAR) efficiency can be derived to ensure safe operation on point-of-care (POC) MRI systems.
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Parsa et al. (2024) studied this question.
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