A Quantitative Method Based on Total Relative Change for Dynamic Electrical Impedance Tomography

Author

You, Fusheng ; Shi, Xuetao ; Dong, Xiuzhen ; Fu, Feng ; Liu, Ruigang ; Shuai, Wanjun ; Li, Zheng

Volume

55

Issue

3

fYear

2008

fDate

3/1/2008 12:00:00 AM

Firstpage

1224

Lastpage

1226

Abstract

We proposed a new method based on total relative change (TRC) from measured boundary voltages to quantify the volume changes of fluid during electrical impedance tomography (EIT) monitoring. The results showed that TRC linearly correlated with the volume of infused saline solution into a phantom, and the slope of TRC changes was approximately linear with the infusion speed. A inserted copper tube at different positions did not affect TRC significantly. The linear relationship between TRC and volume change indicates that TRC could be a good quantitative index for dynamic EIT.

Keywords

electric impedance imaging; phantoms; boundary voltage; copper tube; dynamic electrical impedance tomography; phantom; quantitative index; saline solution; total relative change; volume change; Copper; Electric variables measurement; Fluid dynamics; Imaging phantoms; Impedance measurement; Linear approximation; Monitoring; Tomography; Voltage; Volume measurement; Electrical impedance tomography; quantification; total relative change; Algorithms; Diagnosis, Computer-Assisted; Plethysmography, Impedance; Reproducibility of Results; Sensitivity and Specificity; Tomography;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/TBME.2007.905487

Filename

4360122