ID Number		2618
Study Type		Engineering & Physics
Model		We demonstrated a method for calculation of SAR via an inversion of the heat equation including heat-diffusion and conduction effects.
Details		AUTHORS' ABSTRACT: Alon et al. 2016 (IEEE #6454): Deposition of radiofrequency (RF) energy can be quantified via electric field or temperature change measurements. Magnetic resonance imaging has been used as a tool to measure three dimensional small temperature changes associated with RF radiation exposure. When duration of RF exposure is long, conversion from temperature change to specific absorption rate (SAR) is nontrivial due to prominent heat-diffusion and conduction effects. In this work, we demonstrated a method for calculation of SAR via an inversion of the heat equation including heat-diffusion and conduction effects. This method utilizes high-resolution three dimensional magnetic resonance temperature images and measured thermal properties of the phantom to achieve accurate calculation of SAR. Accuracy of the proposed method was analyzed with respect to operating frequency of a dipole antenna and parameters used in heat equation inversion.
Findings		No Effects
Status		Completed With Publication
Principal Investigator
Funding Agency		?????
Country		UNITED STATES
References		Alon, L et al. Bioelectromagnetics., (2016) 37:493-503
Comments