摘要

Acute left ventricular failure (LVF) is a common medical emergency but detection and monitoring of pulmonary oedema remains problematic. Fluid is an important determinant of tissue impedance. Electrical impedance tomography (EIT) is a non-invasive technique allowing localisation of impedance changes within tissue. We have investigated the relationship between LVF and the electrical impedance of lung tissue. Twenty patients with a clinical diagnosis of acute left ventricular failure were compared with 30 normal subjects. Patients were monitored using serial chest radiographs and electrical impedance tomography measurements of lung impedance during hospital admission. Radiographs were graded according to the severity of pulmonary oedema by two independent radiologists. Lung impedance was significantly (P

译文

急性左心衰竭 (LVF) 是一种常见的医疗急症,但肺水肿的检测和监测仍然存在问题。流体是组织阻抗的一个重要决定因素。电阻抗断层扫描 (EIT) 是一种非侵入性技术,允许在组织内定位阻抗变化。我们研究了 LVF 和肺组织电阻抗之间的关系。20 名临床诊断为急性左心衰竭的患者与 30 名正常人进行了比较。患者在入院期间使用连续的胸片和电阻抗断层扫描测量肺阻抗进行监测。由两名独立的放射科医生根据肺水肿的严重程度对 x线片进行分级。肺阻抗显著 (P

electrical impedance tomography

重症 无损伤医学成像技术 诊断方式
概述  :  

电阻抗断层图像技术( electrical impedance tomography , EIT)是当今生物医学工程学重大研究课题之一。EIT通过配置于人体体表的电极阵,提取与人体生理、病理状态相关的组织或器官的电特性信息,不但反映了解剖学结构,更重要的是有望给出功能性图像结果。EIT不使用核素或射线,对人体无害,可以多次测量,重复使用,可以成为对患者进行长期、连续监护而不会给患者造成损伤或带来不适的医院监护设备。加之其成本低廉,不要求特殊的工作环境等,因而是一种理想的、具有诱人应用前景的无

Electrical 英 [ɪˈlektrɪkl] 美 [ɪˈlektrɪkl]  

释义   adj. 有关电的;电气科学的

例句   What can you find in an electrical shop?

你能在一家电器商店里找到什么?

 

Impedance 英 [ɪmˈpiːdns] 美 [ɪmˈpiːdns]   

释义   n. [电] 阻抗

例句   For the radiation problem, we give the method of setting source and calculating input impedance.

对于辐射问题,给出了设置源与计算输入阻抗的方法。

 

Tomography 英 [təˈmɒɡrəfi] 美 [təˈmɑːɡrəfi]

释义   n. X线断层摄影术(等于laminography)

例句   After nine weeks of chemotherapy, my brother did a computerized tomography scan, and I was on his side.

做了化疗九周之后,我哥哥做了电脑断层扫描,出结果的时候,我就在他身边。


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