Data errors and reconstruction algorithms in electrical impedance tomography

被引：29

作者：

Breckon, W.R. ^{[1
]}

Pidcock, M.K. ^{[1
]}

机构：

[1] Department of Computing and Mathematical Sciences, Oxford Polytechnic, Oxford OX3 0BP, United Kingdom

来源：

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

关键词：

Image Processing--Reconstruction - Imaging Techniques--Reliability - Mathematical Techniques--Algorithms;

D O I：

10.1088/0143-0815/9/4A/018

中图分类号：

学科分类号：

摘要：

In electrical impedance tomography the reconstruction problem is a nonlinear inverse problem and can only be solved by iterative methods. This paper describes two such algorithms, one based on the regularized Newton's method of Levenburg and Marquardt, and a second modified version of this algorithm which uses optimal current drive patterns. The second algorithm is shown to give superior reconstruction in a simulation study. Some effects of errors in the knowledge of boundary shape and electrode position are also discussed.

引用

页码：105 / 109