Non-Invasive Heat-Induced Numerous Tissue Ablation Using High Intensity Focused Ultrasound Technique

Abstract

In biomedical sector, High Intensity Focused
Ultrasound (HIFU) is a non-invasive treatment that employs quasi
acoustic waves to raise the temperature. According to its high
efficiency and cheap cost, it has been the main focus of this
research. The key stages of this tumor ablation include mechanical
and thermal effects. Multiple tissue ablations were analyzed using
HIFU simulation to optimize intensity, power, focal length, and
lens radius of curvature to maximize tumor ablation while
minimizing collateral harm to healthy tissue in the surrounding
area. This model analysis incorporates clinical applications in
order to determine the most optimum parameters. To accomplish
this study, numerous types of human soft and hard tissue were
considered. At a specific acoustic power and exposure time, the
optimal frequency (1.6 MHz to 3.5 MHz) and power (120 W to 140
W) for each tissue were determined for effective tissue ablation.
This study conducted all calculations by changing the lens focal
length from 55 mm to 65 mm. The results of this procedure usually
require a few weeks to safely and efficiently remove the tumor.
Due to this optimum outcome, it indicates that the HIFU tumor
ablation procedure has a high probability of success in the medical
sector.