摘要
目的:相控聚焦超声是热物理治疗领域的研究热点之一,而对其声场的研究是其中最重要的技术环节。本文分析了新型相控聚焦超声声场仿真和实验测量的声场结果。方法:运用LabVIEW虚拟仪器平台开发了超声声场测量系统。该系统用水听器声场扫描法测量了单焦点模式下新型相控聚焦超声声场分布,并用MATLAB等工具包对单焦点模式下的声场分布进行仿真。结果:仿真数据和实验结果基本一致。结论:本文验证了理论模型的正确性及本系统测量相控型聚焦超声声场可行性和有效性。
Objective： Phased-array focused ultrasound is a hot point of researches in thermal physics therapy, of which the acoustic field investigation is the most important section in technology, This paper analyzes the simulation and the experimental results in the acoustic field of new phased-array focused ultrasound. Methods： An acoustic filed measurement system was developed under LabVIEW virtual instruments platform, which is used to measure the acoustic pressure field distributions of the phased-array focused ultrasound in one single focal mode by scanning the acoustic field with a probe hydrophone. Meanwhile, the acoustic field distribution in a single focal mode is simulated with MATLAB toolbox. Results： The experimental result is approximately consistent with theoretical one. Conclusions： The paper demonstrated the correctness of the theoretical model and feasibility and validity of the measurement system.
出处
《中国医学物理学杂志》
CSCD
2009年第5期1434-1437,共4页
Chinese Journal of Medical Physics
基金
国家自然科学基金(NO.30500124)
