Impedance computed tomography algorithm and system
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.
- Publication:
-
Applied Optics
- Pub Date:
- December 1985
- DOI:
- 10.1364/AO.24.003985
- Bibcode:
- 1985ApOpt..24.3985W
- Keywords:
-
- Computer Aided Tomography;
- Electrical Impedance;
- Image Processing;
- Imaging Techniques;
- Algorithms;
- Boundary Value Problems;
- Computerized Simulation;
- Finite Element Method;
- Recursive Functions;
- Instrumentation and Photography;
- INVERSE PROBLEMS;
- TOMOGRAPHY;
- IMAGING