Microwave-induced thermoacoustic elastic imaging:A simulation study  

作　　者：Lin Huang Zheng Liang Shuaiqi Qiao Weipeng Wang 

机构地区：[1]School of Electronic Science and Engineering(National Exemplary School of Microelectronics)University of Electronic Science and Technology of China,Chengdu,P.R.China [2]Zhangjiang Laboratory 100 Haike Road,Shanghai 201204,P.R.China

出　　处：《Journal of Innovative Optical Health Sciences》2024年第2期1-11,共11页创新光学健康科学杂志（英文）

基　　金：supported by the National Natural Science Foundation of China(Nos.12174208 and 32227802);National Key Research and Development Program of China(No.2022YFC3400600);Guangdong Major Project of Basic and Applied Basic Research(No.2020B0301030009);Fundamental Research Funds for the Central Universities(Nos.2122021337 and 2122021405);the 111 Project(No.B23045).

摘　　要：Microwave-induced thermoacoustic imaging(MTI)has the advantages of high resolution,high contrast,non-ionization,and non-invasive.Recently,MTI was used in the¯eld of breast cancer screening.In this paper,based on the¯nite element method(FEM)and COMSOL Multiphysics software,a three-dimensional breast cancer model suitable for exploring the MTI process is proposed to investigate the in°uence of Young's modulus(YM)of breast cancer tissue on MTI.It is found that the process of electromagnetic heating and initial pressure generation of the entire breast tissue is earlier in time than the thermal expansion process.Besides,compared with normal breast tissue,tumor tissue has a greater temperature rise,displacement,and pressure rise.In particular,YM of the tumor is related to the speed of thermal expansion.In particular,the larger the YM of the tumor is,the higher the heating and contraction frequency is,and the greater the maximum pressure is.Di®erent Young's moduli correspond to di®erent thermoacoustic signal spectra.In MTI,this study can be used to judge di®erent degrees of breast cancer based on elastic imaging.In addition,this study is helpful in exploring the possibility of microwave-induced thermoacoustic elastic imaging(MTAE).

关 键 词：Thermoacoustic imaging breast cancer multi-physics simulation elastic imaging 

分 类 号：R730[医药卫生—肿瘤]