Abstract
Abstract
The influence of high-intensity focused ultrasound (HIFU) reflected from a soft-tissue/bone interface on the temperature rise and lesion formation was theoretically and experimentally investigated in a soft-tissue/bone phantom. The acoustic intensities and the HIFU-induced temperature rises at the focal and the pre-focal regions were numerically simulated without and with the bone. Thermal ablation experiments in a soft-tissue/bone phantom were performed to validate the simulation results. It was found that the presence of a soft-tissue/bone interface in the HIFU beam path may enhance heating leading to the growth of the thermal lesion toward the HIFU source and the bone.
Subject
General Physics and Astronomy,Physics and Astronomy (miscellaneous),General Engineering