文档介绍：Temperature Field FDTD Simulation of Self-focusing
and Electronic Phased Focusing
in Human Body Tissues
. Yin, ,,, *
Dept. of Biomedical Engineering, Tianjin Medical Univ. Cancer Hospital, Tianjin Medical Univ.
Tianjin, China Tianjin, China
******@tijmu.
Abstract—High intensity focused ultrasound (HIFU) tumor The numerical simulation of temperature field is one of the
therapy is a new treatment technique of solid tumors and attracts effective methods to forecast and analysis the temperature
interest of many researchers. In this study, a three-dimensional distribution during HIFU treatment.
computational model, associated with finite difference time In this study, bine nonlinear propagation of sound
domain (FDTD) and Pennes Bio-heat transfer equation, is wave and the Pennes bio-heat transfer equation to simulate
presented for studying the differences of the temperature field numerically the temperature field in human body tissues
between self-focusing and electronic phased focusing. The effects (HBT) by applying the FDTD method. In addition, the
of frequency on the temperature field of two different focusing simulations of temperature field with different focusing ways
techniques were also touched. Our results demonstrated that the and frequency are reported.
area of focal region formed by s