Title :
Optimized Excitation Mode for Generalized Back Projection Algorithm in 3-D EIT
Author :
Hongbin Wang ; Guizhi Xu ; Shuai Zhang ; Weili Yan
Author_Institution :
Province-Minist. Joint Key Lab. of Electromagn. Field & Electr. Apparatus Reliability, Hebei Univ. of Technol., Tianjin, China
Abstract :
Biomedical electrical impedance tomography (EIT) seeks to image the interior conductivity spatial distribution within a 3-D object. In this paper, we propose a novel excitation mode of 3-D EIT for generalized back projection algorithm (GBPA). The new injection configuration is optimized by particle swarm optimization making the equipotential distribution monotonic, so that the projection matrix of GBPA would be computed more accurate and available. In addition, the GBPA reconstruction results in the optimized mode are compared with those in multisection simultaneous adjacent excitation mode assessed by several metrics in simulation experiments.
Keywords :
bioelectric phenomena; electric impedance imaging; electrical conductivity; image reconstruction; medical image processing; particle swarm optimisation; 3D EIT; 3D object; GBPA reconstruction; biomedical electrical impedance tomography; generalized back projection algorithm; injection configuration; interior conductivity spatial distribution; monotonic equipotential distribution; optimized excitation mode; particle swarm optimization; projection matrix; Electric potential; Electrodes; Image reconstruction; Impedance; Optimization; Projection algorithms; Tomography; Electrical impedance tomography (EIT); generalized back projection algorithm (GBPA); optimization problems; particle swarm optimization (PSO);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2014.2361771
