Effect of the SAR distribution of a radio frequency (RF) coil on the temperature field within a human leg: numerical studies

摘要

sThis paper presents a three dimensional Finite Element Model for studying the effect of the specific absorption rate (SAR) distribution of a RF coil on the temperature distribution within a human leg due to the energy deposit. The model consists of fat, muscle, and bone, and has 21, 158 uniform elements. The 3-D leg model was derived from the tissue maps that are obtained from the 79 sequential MR images of a volunteer's leg. The specific absorption rate (SAR) data are from the solution to the fundamental Maxwell;s electromagnetic equations of the leg with RF coil in place using finite difference time domain (FDTD) method.