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第 40 卷 第 2 期 Vol. 40, No. 2
2021 年 3 月 Journal of Applied Acoustics March, 2021
⋄ 研究报告 ⋄
乳腺超声断层成像系统的有限元仿真分析 ∗
张 玉 张国军 † 裴 毓 张文栋
(中北大学动态测试省部共建实验室 太原 030051)
摘要：本文利用有限元仿真软件 COMSOL 进行乳腺超声断层成像仿真，仿真模型置于水中，重建区域包含乳
腺软组织和一个圆形铁块障碍物。256 个换能器等角度环形分布于乳腺外部，采用一个换能器发射、其余所有
换能器接收的方式进行，依次进行 256 次仿真来实现环形扫描。仿真得到随时间变化的二维声压分布云图，提
取接收电压获得信号矩阵。利用等角扇束滤波反投影重建算法进行图像重建，仿真实验结果证明了换能器呈
360 进行环形扫描的方式可行。
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关键词：COMSOL；仿真；超声断层成像；有限元
中图法分类号: TB55 文献标识码: A 文章编号: 1000-310X(2021)02-0243-06
DOI: 10.11684/j.issn.1000-310X.2021.02.010
The finite element simulation analysis of breast ultrasound tomography system
ZHANG Yu ZHANG Guojun PEI Yu ZHANG Wendong
(State Key Laboratory of Dynamic Testing Technology, North University of China, Taiyuan 030051, China)
Abstract: In this paper, the finite element simulation software COMSOL is used to simulate breast ultrasound
tomography. The simulation model is placed in water, and the reconstruction area contains breast soft tissue
and a round iron block obstacle. The 256 transducers are distributed in a circle at equal angles outside
the mammary gland, using one transducer to transmit and all other transducers to receive, and performing
256 simulations in turn to achieve a circular scan. The simulation obtains a two-dimensional cloud map of
sound pressure distribution with time, and extracts the received voltage to obtain a signal matrix. The image
reconstruction is carried out by using the equal angle fan beam filter back projection reconstruction algorithm.
The results of simulation experiments demonstrate that the transducers are arranged in 360 and the method
◦
of circular scanning is feasible.
Keywords: COMSOL; Simulation; Ultrasound tomography; Finite element
2020-06-09 收稿; 2020-09-11 定稿
国家自然科学基金国家重大科学仪器研制项目 (61927807), 国家重点研发计划项目 (2019YFC0119800), 山西省重点研发计划项目
∗
(201803D121089), 山西省研究生教育创新项目 (2019BY109), 山西省 “1331” 工程重点学科建设基金项目
作者简介: 张玉 (1994– ), 女, 四川乐山人, 硕士研究生, 研究方向: 乳腺超声断层成像。
† 通信作者 E-mail: zhangguojun1977@nuc.edu.cn
