Possibilities and problems of real-time imaging of tissue resistivity

被引：13

作者：

Brown, B.H. ^{[1
]}

Barber, D.C. ^{[1
]}

机构：

[1] Department of Medical Physics and Clinical Engineering, Sheffield University and Health Authority, Royal Hallamshire Hospital, Sheffield S10 2JF, United Kingdom

来源：

Clinical Physics and Physiological Measurement | 1988年 / 9卷 / SUPPL. A期

关键词：

Computer Systems; Digital--Real Time Operation - Data Processing--Data Acquisition - Electric Measurements--Impedance - Image Processing--Reconstruction;

D O I：

10.1088/0143-0815/9/4A/020

中图分类号：

学科分类号：

摘要：

It is shown that the surface potential profiles used for electrical impedance tomography are largely determined by body shape and to a much lesser extent by internal resistivity distribution. The results of 2D finite element modelling show that changes of profile amplitude greater than a factor of four can be expected for the thorax. This offers the possibility of determining body shape from surface potential profiles and hence the determination of static images. Some of the other problems and possibilities of impedance imaging are discussed and, in particular, the design of a system for real-time cardiac gated imaging.

引用

页码：121 / 125