A REAL-TIME ELECTRICAL-IMPEDANCE TOMOGRAPHY SYSTEM FOR CLINICAL USE -DESIGN AND PRELIMINARY-RESULTS

Authors
SMITH RWM FREESTON IL BROWN BH
Citation
Rwm. Smith et al., A REAL-TIME ELECTRICAL-IMPEDANCE TOMOGRAPHY SYSTEM FOR CLINICAL USE -DESIGN AND PRELIMINARY-RESULTS, IEEE transactions on biomedical engineering, 42(2), 1995, pp. 133-140
Citations number
35
Categorie Soggetti
Engineering, Biomedical
Journal title
IEEE transactions on biomedical engineering → ACNP
ISSN journal
00189294
Volume
42
Issue
2
Year of publication
1995
Pages
133 - 140
Database
ISI
SICI code
0018-9294(1995)42:2<133:ARETSF>2.0.ZU;2-4
Abstract
An instrument is described which produces images of the electrical imp edance distribution within the body at a rate of 25 frames per second, allowing lung ventilation and lung perfusion to be observed in real t ime. The instrument makes impedance measurements using an array of 16 electrodes on the surface of the body, and reconstructs the images usi ng a weighted backprojection technique. The design of the data acquisi tion electronics and the reconstruction and display processor are desc ribed. Some preliminary in vitro and in vivo results from the system a re presented.