Document Type
Article
Language
eng
Publication Date
6-26-2018
Publisher
Institute of Physics and Engineering in Medicine
Source Publication
Physiological Measurement
Source ISSN
0967-3334
Abstract
Objective
Absolute images have important applications in medical Electrical Impedance Tomography (EIT) imaging, but the traditional minimization and statistical based computations are very sensitive to modeling errors and noise. In this paper, it is demonstrated that D-bar reconstruction methods for absolute EIT are robust to such errors.
Approach
The effects of errors in domain shape and electrode placement on absolute images computed with 2-D D-bar reconstruction algorithms are studied on experimental data.
Main Results
It is demonstrated with tank data from several EIT systems that these methods are quite robust to such modeling errors, and furthermore the artefacts arising from such modeling errors are similar to those occurring in classic time-difference EIT imaging.
Significance
This study is promising for clinical applications where absolute EIT images are desirable, but previously thought impossible.
Recommended Citation
Hamilton, Sarah J.; Mueller, J. L.; and Santos, T. R., "Robust Computation in 2D Absolute EIT (A-EIT) Using D-Bar Methods with the “EXP” Approximation" (2018). Mathematical and Statistical Science Faculty Research and Publications. 33.
https://epublications.marquette.edu/math_fac/33
Comments
Accepted version. Physiological Measurement, Vol. 39, No. 6 (June 26, 2018): 064005. DOI. © 2018 Institute of Physics and Engineering in Medicine. Used with permission.