Title :
Electrical impedance tomography using a 3-D boundary element inverse solution
Author :
Babaeizadeh, Saeed ; Brooks, Dana H. ; Isaacson, David
Author_Institution :
Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA
Abstract :
In this paper, we describe a 3-D boundary element method (BEM) solution to the forward and inverse problems of electrical impedance tomography (EIT). Our target application is to use EIT to reconstruct a conductivity map to be used in the inverse problem of electrocardiography. However the method is quite general, subject to the restriction that the geometry must be known and only the conductivities need to be reconstructed. The principle advantage of a BEM solution to EIT is that it imposes the assumption that the internal organ conductivities are piecewise constant in the volume, which dramatically decreases the number of unknowns. It appears that our formulation of the inverse problem leads to a stable minimization problem.
Keywords :
boundary-elements methods; electric impedance imaging; electrocardiography; inverse problems; minimisation; 3D boundary element inverse solution; conductivity map; electrical impedance tomography; electrocardiography; internal organ conductivities; inverse problem; piecewise constant; stable minimization problem; Boundary element methods; Conductivity; Electrocardiography; Geometry; Image reconstruction; Image segmentation; Inverse problems; Surface impedance; Tomography; Torso;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Eighth Asilomar Conference on
Print_ISBN :
0-7803-8622-1
DOI :
10.1109/ACSSC.2004.1399425