摘要
超声断层成像作为一种新兴的乳腺癌影像学检测手段,具有无辐射、低成本的优点。现有的乳腺超声成像系统所用阵列多为线型阵列,获取完整被测切片图像需要依靠机械移动或旋转,在实际操作中存在一定的困难和误差。本文设计了一种基于256阵元环形阵列的反射式超声成像系统,将常见的B模式成像应用于环形阵列成像的同时,给出了环形阵列背景下时间反转成像算法的实现方法。通过仿真实验和乳房体模实测,初步验证了该基于环形阵列的反射超声断层成像系统的可行性。实验结果表明,与B模式成像相比,时间反转成像结果中尺寸重建偏差最大可降低24.4%。另外,通过人体手臂测试实验证明了该方法在人体多部位测试的可行性。本文研究成果为基于环形阵列的超声成像系统的搭建提供了理论依据和技术支持。
As a new imaging detection method for breast cancer,ultrasonic computed tomography has the advantages of non-radiation and low cost.Most of the existing breast ultrasound imaging systems use lin-ear arrays,which require mechanical movement or rotation to obtain a complete slice image.There are certain difficulties and errors in practical operation.In this paper,a reflective ultrasound imaging system based on 256 elements ring array was designed.The common B-mode imaging was applied to the ring array imaging,and the implementation method of the time reversal imaging algorithm in the ring array background was derived.The feasibility of the reflective ultrasound tomography system based on circular array was preliminarily verified through simulation experiments and breast phantom measurements.Com-pared with B-mode imaging,the dimensional reconstruction deviation in time reversal imaging results can be reduced by a maximum of 24.4%.In addition,a human arm test was conducted to prove the feasibil-ity of this method in multiple parts of the human body.The research results of this study provide theoreti-cal basis and technical support for the construction of an ultrasonic imaging system based on ring array.
作者
胡淑敏
杨玉华
吴菲
裴毓
张国军
HU Shumin;YANG Yuhua;WU Fei;PEI Yu;ZHANG Guojun(State Key Laboratory of Dynamic Measurement Technology,North University of China,Taiyuan 030051,China)
出处
《中北大学学报(自然科学版)》
2025年第2期230-236,共7页
Journal of North University of China(Natural Science Edition)
基金
国家自然科学基金国家重大科学仪器研制项目(61927807)。
