Journal of magnetic resonance imaging : JMRI
-
J Magn Reson Imaging · Nov 2007
Calculation of MRI-induced heating of an implanted medical lead wire with an electric field transfer function.
To develop and demonstrate a method to calculate the temperature rise that is induced by the radio frequency (RF) field in MRI at the electrode of an implanted medical lead. ⋯ The transfer function is proposed as an efficient method to calculate MRI-induced heating at an electrode of a medical lead. Measured temperature rises of a model implant in a phantom were in good agreement with the rises predicted by the transfer function. The transfer function could be numerically or experimentally determined.