Sub-wavelength ultrasonic therapy using a spherical cavity transducer with open ends
Sub-wavelength ultrasonic therapy using a spherical cavity transducer with open ends
复制标题
使用具有开口端的球腔换能器进行亚波长超声治疗
DOI：
10.1063/1.4807622
复制
发表时间：
2013-05-20
影响因子：
4
通讯作者：
Wang, Zhibiao
中科院分区：
文献类型：
--
作者：
Li, Faqi;Wang, Hua;Wang, Zhibiao
高强度聚焦超声（HIFU）聚焦精度受到传统聚焦超声方法的限制。本研究的目的是通过使用具有开口端的球形腔换能器来开发超声聚焦模式。通过实验测量和数值模拟，研究了该换能器的声场特性及其对组织的损伤。结果表明，与传统的凹面聚焦方法相比，凹面聚焦方法的聚焦区域更小，声压聚焦增益更高（约3倍）。研究结果表明，将HIFU治疗精度提高到亚波长水平具有很大的临床应用潜力。
High intensity focused ultrasound (HIFU) focusing precision is limited by conventional focusing ultrasound methods. The aim of this study is to develop an ultrasonic focusing modality by using a spherical cavity transducer with open ends. Experimental measurements and numerical simulations were performed to study the acoustic field and the induced tissue lesion using this transducer. The results demonstrate that the focusing zone is smaller while the focusing gain of sound pressure is higher (about 3 times) than the conventional concave focusing method. The results demonstrate great clinical potentials of enhancing the precision of HIFU therapy to the sub-wavelength level.