Abstract
The total delivered power of an MRI radio frequency (RF) coil is an important parameter for MRI safety control. For a 2-channel MRI coil, this parameter is not only dependent on the excitation strength on each channel, but also dependent on the object loading inside the coil. The purpose of this investigation is to propose a fast method to assess the total delivered power of a 2-channel MRI RF coil. Four hundred and ninety simulations for a high-resolution anatomical model were performed to validate this method. Among these simulations, ten random excitation-pairs of the 2-channel coil and forty-nine patient landmarks ranging between −200 to 1000 mm were considered. It is proved that this fast estimation method can calculate the total delivered power of a 2-channel RF coil with any excitation pairs by only two simulations and its relative error is less than 1.5%.
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