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Abstract #4433

A Simple and Conservative Method to Include Variation of Core Blood Temperature with Pennes Bioheat Equation

Giuseppe Carluccio1, Christopher Michael Collins1

1Radiology, New York University, New York, United States

Pennes bioheat equation is one of most used models to predict temperature increase in body tissues. We present a simple and conservative method to include the variation of blood temperature increase in the Pennes bioheat equation due to the whole-body SAR absorption. Plots are provided showing the core blood temperature over time, and the spatial temperature increase distribution for a cross-section of the body obtained with both the Pennes bioheat equation having constant value of blood temperature, and the method with the time dependent blood temperature here presented.

Keywords

absorbed absorption according alone application applications applied appropriate array assumption assumptions blood body capacity channel classic commonly computation computed conductance conductivity confirm conservative considered considers constant contribution cool cooling core course density dependence dependent describe describing developed differential directly distribution distributions either energy equal equation equations equilibrium evolution excitation expected external fast finite form generated gradual heat heating include indicates invariant limitation linear local localized lost making mass material metabolism minute minutes model models numerical ones original overcome particularly percentage perfusion period power previous producing proposed radiology recently redistributed reduction regional relatively relevant replacing represent respectively respiration safety simple simplified simulations simulator skin solution spatial subject subscript summed surface temperature term thermal transfer typically useful variation version whole written