Boundary element method and simulated annealing algorithm applied to electrical impedance tomography image reconstruction

Author(s)

Menin, Olavo H. ^[1] ; Rolnik, Vanessa ^[2] ; Martinez, Alexandre S. ^[2]

Affiliation

^[1] Inst Fed Educ Ciencia & Tecnol Sao Paulo, Sertaozinho, SP - Brazil

^[2] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Ribeirao Preto - Brazil

• Document type: Journal article
• Source: Revista Brasileira de Ensino de Física; v. 35, n. 2 APR-JUN 2013.
• Web of Science Citations: 0

Abstract

Physics has played a fundamental role in medicine sciences, specially in imaging diagnostic. Currently, image reconstruction techniques are already taught in Physics courses and there is a growing interest in new potential applications. The aim of this paper is to introduce to students the electrical impedance tomography, a promising technique in medical imaging. We consider a numerical example which consists in finding the position and size of a non-conductive region inside a conductive wire. We review the electrical impedance tomography inverse problem modeled by the minimization of an error functional. To solve the boundary value problem that arises in the direct problem, we use the boundary element method. The simulated annealing algorithm is chosen as the optimization method. Numerical tests show the technique is accurate to retrieve the non-conductive inclusion. (AU)

• FAPESP's process: 08/01284-4 - Development of numerical techniques for three-dimensional electrical impedance tomography
• Grantee: Vanessa Rolnik Artioli
• Support Opportunities: Regular Research Grants