Early monitoring of electrical impedance tomography in subarachnoid hemorrhage piglet models
10.3760/cma.j.issn.1671-8925.2008.03.017
- VernacularTitle:电阻抗断层成像技术对小猪蛛网膜下腔出血早期监护作用的初步研究
- Author:
Lian-Feng LI
1
;
Can-Hua XU
;
Zhen-Wei ZHAO
;
Liang WANG
;
Xue-Tao SHI
;
Yu YOU
;
Wei-Xin LI
;
Xiu-Zhen DONG
;
Guo-Dong GAO
Author Information
1. 第四军医大学唐都医院
- Keywords:
Subarachnoid hemorrhage;
Electrical impedance tomography;
Bioelectrical impedance;
Animal model;
Imaging monitoring
- From:
Chinese Journal of Neuromedicine
2008;7(3):278-281
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the value of electrical impedance tomography (EIT) system in the early diagnosis of subarachnoid hemorrhage (SAH) through observing the primary regularity of the electrical impedance changes in SAH animal models as well as the possible mechanism of this regularity. Methods The experimental SAH models in piglets were intmduced by one-time injection of fresh autologous blood into the cisterna magna. We observed the changes of the two-dimensional imaging with EIT system used for cominual dynamic monitoring to the models.Results The models were successfully introduced in 8 piglets.In the forepan of the injection,resistivity configuration decreased at the anterior region of the head as well as the posterior of that. At the time of finishing injection,the resistivity configuration reached the negative max value.After injection,resistivity configuration at the anterior region of the head gradually came back. But the resistivity configuration at the posterior region of the head increased persistenny. Conclusions Althouth the configuration of human head is so complex that limits the application of EIT on the head,it does have certain sensitivity in the diagnosis of SAH and can localize the hemorrhage site, so EIT may be applied widely in early diagnosis and assistant treatment of SAH in clinical.
