Fast Whole-Body Temperature Estimation for Real-Time MRI Safety Assurance

A method to quickly estimate the temperature increase by SAR absorption through the entire MRI exam. Using the linearity of the bioheat equation, the method convolves the precalculated temperature responses of the body tissues with the sequence of SAR segments applied during the exam. The predicted temperature distribution has been compared with the one obtained with a full Finite Difference Method solving the Pennes bioheat equation. The difference in the maximum temperature between the two methods was less than 1%, but in a computation time more than 30 times shorter.

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