Title :
Optimal current patterns for three-dimensional electric current computed tomography
Author :
Goble, John ; Isaacson, David
Author_Institution :
Rensselaer Polytech. Inst., Troy, NY, USA
Abstract :
Basic investigations of the detectability of small targets in a three-dimensional cylindrical saline phantom are described. Distinguishability, a measure of target detectability, is defined, and the effects of electrode geometry, target volume and target height on distinguishability are reported. An algorithm that computes current patterns that maximize distinguishability in a three-dimensional electrode array is described and tested. The results show that the algorithm greatly increases distinguishability for small, off-center targets and converges quickly to optimal current patterns
Keywords :
bioelectric phenomena; computerised tomography; 3D cylindrical saline phantom; 3D electric current computed tomography; algorithm; current patterns computation; electrode geometry; optimal current patterns; small targets detectability; target height; target volume; Biology computing; Biomedical electrodes; Computed tomography; Computer science; Conductivity; Current measurement; Imaging phantoms; Mathematics; Voltage; Volume measurement;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95820
