ANALYSIS OF NONLINEAR FOCUSED ULTRASOUND FIELD WITH FINITE ELEMENT METHOD

被引：0

作者：

Wu, De-lin ^{[1
,2
,3
]}

Gao, Shen-ping ^{[1
,4
]}

Yao, Lei ^{[1
,4
]}

Chen, Jian ^{[1
,4
]}

Zhang, Zhi-kai ^{[1
,4
]}

Zhang, Heng-da ^{[1
,4
]}

Li, Jian ^{[5
]}

Yu, Xing-yan ^{[1
,4
]}

机构：

[1] Zhejiang Inst Metrol, Hangzhou 310018, Peoples R China

[2] Chinese Acad Sci, Inst Acoust, State Key Lab Acoust, Beijing 100190, Peoples R China

[3] Zhejiang Univ Technol, Hangzhou 310014, Peoples R China

[4] Key Lab Acoust & Vibrat Precis Measuring Technol, Hangzhou 310018, Peoples R China

[5] Wuhan Text Univ, Wuhan 430200, Peoples R China

来源：

PROCEEDINGS OF THE 2020 15TH SYMPOSIUM ON PIEZOELECTRCITY, ACOUSTIC WAVES AND DEVICE APPLICATIONS (SPAWDA) | 2021年

基金：

中国国家自然科学基金;

关键词：

HIFU; Harmonics; Nonlinear; FEM;

D O I：

10.1109/SPAWDA51471.2021.9445508

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

High intensity focused ultrasound (HIFU) is widely accepted as a treatment modality enabling noninvasive tissue heating and ablation for numerous applications. Nonlinear phenomena such as wave distortion and amplitude difference between peak positive and negative acoustic pressure are observed. The nonlinear field of HIFU is numerical calculated based on the Westervelt equation. The equation is performed with finite element method (FEM). The result agrees very well with the results carried with finite difference time domain (FDTD) method. The nonlinear ultrasound field of HIFU are obtained. And nonlinear phenomena are analyzed.

引用

页码：324 / 328

页数：5

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