Abstract

An electrical impedance-based method and apparatus for imaging the interior of a structure, such as a mineral or human body, having regions of differing impedance, are described. The technique involves impressing a number of excitation patterns on the body and measuring the resulting voltages at a number of sites. Because voltages need not be measured at current-injection sites, contact resistance problems are ameliorated. This impedance-computed tomography reconstruction process employs the solution of the Poisson equation and makes no assumptions of raylike behavior of the current flow paths. Results, based on computer-simulated data and real measurements, are presented.

© 1985 Optical Society of America

High-speed computed tomography: systems and performance

Kristian R. Peschmann, Sandy Napel, John L. Couch, Roy E. Rand, Robert Alei, Sholom M. Ackelsberg, Robert Gould, and Douglas P. Boyd
Appl. Opt. 24(23) 4052-4060 (1985)

Algorithms for limited-view computed tomography: an annotated bibliography and a challenge

Rangaraj Rangayyan, Atam Prakash Dhawan, and Richard Gordon
Appl. Opt. 24(23) 4000-4012 (1985)

Computed tomography videography: an electrooptical system for video-rate image reconstruction

Arthur F. Gmitro and Gene R. Gindi
Appl. Opt. 24(23) 4040-4045 (1985)

Measurement of flame temperature distribution by IR emission computed tomography

Hiroki Uchiyama, Masato Nakajima, and Shinichi Yuta
Appl. Opt. 24(23) 4111-4116 (1985)

Spatial response of source–collimator–detector systems for industrial applications of computed tomography

T. Taylor and P. W. Reynolds
Appl. Opt. 24(23) 4064-4066 (1985)