期刊论文

Qian, Shengyou

英文

Ultrasonics

0041-624X

2013

53

1

171-177

10.1016/j.ultras.2012.05.005

The size and depth of the focused ultrasound beam mainly depend on the geometrical size and acoustic parameters of the HIFU transducer. Among a number of concave self-focusing transducer (e.g. Sonablate-500, Focus Surgery, USA; FEPBY02, Beijing Yuande Biomedical Engineering, China; Model-JC, Chongqing HAIFU™, China; etc.) applied in practice, The −6 dB beam size of HIFU system in its focal region is usually 1–3 mm in width and about 10 mm in length. However, the detectable and treatable

本校为其他机构

The control problem in ultrasound therapy is to destroy the tumor tissue while not harming the intervening healthy tissue with a desired temperature elevation. The objective of this research is to present a robust and feasible method to control the temperature distribution and the temperature elevation in treatment region within the prescribed time, which can improve the curative effect and decrease the treatment time for heating large tumor (>= 2.0 cm in diameter). An adaptive self-tuning-regulator (STR) controller has been introduced into this control method by adding a time factor with a re...