电阻抗断层成像
电阻抗
体内
材料科学
电极
生物医学工程
缺血
断层摄影术
脑功能
核磁共振
物理
光学
医学
神经科学
心脏病学
生物
生物技术
量子力学
作者
Xiaoming Wu,Xiuzhen Dong,Mingxin Qin,Feng Fu,Yuemin Wang,Fengming You,Haiyan Xiang,Ruigang Liu,Xuetao Shi
出处
期刊:PubMed
日期:2003-03-01
卷期号:20 (1): 49-51
被引量:3
摘要
The in vivo measurements of rabbit brain tissue impedance were taken under both normal and ischemic conditions by using two-electrode measurement method in the frequency range from 0.1 Hz to 1 MHz. The dynamic images about the resistivity of cerebral ischemia were reconstructed based on a 16-electrode system. The results of in vivo measurement showed that the ratio of impedance increased can be as high as 75% at frequencies lower than 10 Hz. In the range from 1 KHz to 1 MHz, the ratio showed a constant value of 15%. The electrical impedance tomography (EIT) images obtained suggested that the regions of impedance changes highly correspond to the position of ischemia. It is confirmed that the brain function changes caused by local deficiency of blood can be detected and imaged by EIT method.
科研通智能强力驱动
Strongly Powered by AbleSci AI