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中华重症医学电子杂志 ›› 2019, Vol. 05 ›› Issue (04) : 373 -378. doi: 10.3877/cma.j.issn.2096-1537.2019.04.015

所属专题: 文献

综述

电阻抗断层成像技术在呼吸系统肺功能成像中的应用
刘孟春1, 邢金燕1,()   
  1. 1. 266000 青岛大学附属医院重症医学科
  • 收稿日期:2018-07-07 出版日期:2019-11-28
  • 通信作者: 邢金燕

Electrical impedance tomography in lung imaging of the respiratory system

Mengchun Liu1, Jinyan Xing1,()   

  1. 1. Department of Intensive Care Unit, Affiliated Hospital of Qingdao University, Qingdao 266000, China
  • Received:2018-07-07 Published:2019-11-28
  • Corresponding author: Jinyan Xing
  • About author:
    Corresponding author: Xing Jinyan, Email:
引用本文:

刘孟春, 邢金燕. 电阻抗断层成像技术在呼吸系统肺功能成像中的应用[J/OL]. 中华重症医学电子杂志, 2019, 05(04): 373-378.

Mengchun Liu, Jinyan Xing. Electrical impedance tomography in lung imaging of the respiratory system[J/OL]. Chinese Journal of Critical Care & Intensive Care Medicine(Electronic Edition), 2019, 05(04): 373-378.

电阻抗断层成像技术(EIT)作为一项新兴的功能性成像技术,具有无损伤、便携、图像监护等突出特点。其中肺功能成像为目前EIT最主要的应用领域,可以实现肺通气及血流灌注的实时动态监测。本文介绍肺EIT在呼吸系统常见疾病如急性呼吸窘迫综合征、慢性阻塞性肺疾病、肺栓塞等疾病中的基础及临床研究进展,为未来EIT技术的进步及临床应用提供帮助。

Electrical impedance tomography (EIT) is a new functional imaging technology, with the outstanding advantages of noninvasiveness, portability, and medical image monitoring. The functional lung imaging is the main application field of EIT, which can achieve real-time dynamic data of pulmonary ventilation and perfusion. This paper reviews some progresses of its fundamental research and clinical application in the common diseases of respiratory system such as acute respiratory distress syndrome, chronic obstructive pulmonary disease, pulmonary embolism, to offer support for the technological progress and clinical application of EIT in the future.

图1 肺电阻抗断层成像技术的状态图像的定制兴趣区。图a为肺部感染患者仰卧位的肺电阻抗图像:各像素的相关阻抗变化显示为色度差异,白色——图像内的最大区域阻抗变化(如100%)部位,即换气良好的区域,蓝色——最大区域阻抗变化>10%则呈深蓝色显示,深蓝色随数值的增加而逐渐变为浅蓝色;黑色——最大区域阻抗变化<10%的区域,即换气不足或非换气区域;图b为同一患者的胸部CT:提示双肺炎症,双侧胸腔积液并双肺下叶膨胀不全
图2 EIT提供的吸气末趋势视图和EELI趋势视图。图a为肺部感染患者应用PEEP 6 cmH2O机械通气后吸气末趋势视图;图b为EELI变化的趋势视图;蓝色——EELI增加,即正向变化;黄色——EELI减少,即负向变化;黑色——EELI无变化
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