Standardized testing in the field of MR Safety is critical to the functioning of the science and the well-being of the patient. The gradient-induced temperature rise of a copper annulus reference standard was measured using a laboratory dB/dt exposure system to assess measurement repeatability and validation of test system operation. The reference standard was subjected to heating variables, including gradient exposure in various gelled-HEC temperatures and gradient exposure to various frequencies of magnetic field. Results indicate the effect of eddy currents on conductive materials under various testing conditions, which is of significance for passive and active implantable medical devices.
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