title: A quantitative method based on total relative change for dynamic electrical impedance tomography.
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.
authors.affiliation: Department of Biomedical Engineering, Fourth Military Medical University, Xi'an 710032, China. yfusheng@263.ne
authors.forename: Fusheng
authors.initials: F
authors.lastname: You
authors.forename: Xuetao
authors.initials: X
authors.lastname: Shi
authors.forename: Xiuzhen
authors.initials: X
authors.lastname: Dong
authors.forename: Feng
authors.initials: F
authors.lastname: Fu
authors.forename: Ruigang
authors.initials: R
authors.lastname: Liu
authors.forename: Wanjun
authors.initials: W
authors.lastname: Shuai
authors.forename: Zheng
authors.initials: Z
authors.lastname: Li
mesh_terms: D000465:Algorithms; D003936:Diagnosis, Computer-Assisted / Q000379:methods*; D010992:Plethysmography, Impedance / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014054:Tomography / Q000379:methods*