肺水肿三维电阻抗断层成像方法  

3D electrical impedance tomography method for pulmonary edema

作　　者：王琦[1,2] 毕旭[1] 赵晓赟 李秀艳 段晓杰[2] 汪剑鸣[2] WANG Qi;BI Xu;ZHAO Xiaoyun;LI Xiuyan;DUAN Xiaojie;WANG Jianming(School of Life Science,Tiangong University,Tianjin 300387,China;School of Electronic and Information Engi-neering,Tiangong University,Tianjin 300387,China;Chest Hospital of Tianjin University,Tianjin 300072,China;Chest Clinical College of Tianjin Medical University,Tianjin 300070,China;Department of Respiratory Critical Care Medicine and Sleep Center,Tianjin Chest Hospital,Tianjin 300222,China)

机构地区：[1]天津工业大学生命科学学院,天津300387 [2]天津工业大学电子与信息工程学院,天津300387 [3]天津大学胸科医院,天津300072 [4]天津医科大学胸科临床学院,天津300070 [5]天津市胸科医院呼吸重症监护医学与睡眠中心,天津300222

出　　处：《天津工业大学学报》2024年第5期59-65,共7页Journal of Tiangong University

基　　金：国家自然科学基金资助项目(62072335,62071328)。

摘　　要：为了对肺水肿过程进行连续可视化监测,实时监测肺水肿动态特征,提出了一种基于Split-Bregman算法的3D-TV正则化三维EIT成像方法。将3D-TV正则化方法与传统的共轭梯度(conjugate gradient,CG)算法和总变差正则化(total variation,TV)算法重建图像的相对误差(relative error,RE)、相关系数(correlation coeffi-cient,CC)和结构相似度(structural similarity index measurement,SSIM)进行对比与评价;并将3D-TV正则化方法应用于大鼠肺水肿实验,监测大鼠肺水肿的整个过程并进行分析。结果表明:与传统TV算法相比,3D-TV正则化方法使三维EIT成像的RE降低了9.1%,CC提高了9.1%,SSIM提高了7.7%,说明3D-TV正则化方法更适合三维EIT图像重建,并且可以对大鼠肺水肿的整个过程进行监测和成像。In order to realize continuous visual monitoring of the pulmonary edema process,monitor the characteristics of dynamic changes of pulmonary edema in real time,a 3D-TV regularized 3D-EIT imaging method based on Split-Bregman algorithm is proposed.The 3D-TV regularization method is compared with the traditional conjugate gradient(CG)and total variation(TV)algorithms to evaluate the relative error(RE),correlation coefficient(CC)and structural similarity index measurement(SSIM)of the reconstructed images.Finally,the 3D-TV regularization method was applied to the rat pulmonary edema experiment,and the whole process of rat pulmonary edema was monitored and analyzed.The results show that compared with the traditional TV algorithm,the 3D-TV regularization method reduces the RE of 3D EIT imaging by 9.1%,improves CC by 9.1%and improves SSIM by 7.7%,indicating that the 3D-TV regularization method is more suitable for 3D-EIT image reconstruction.And the whole process of pulmonary edema in rats can be monitored and imaged.

关 键 词：电阻抗断层成像 正则化算法 图像重建 肺水肿 

分 类 号：TN911.73[电子电信—通信与信息系统]