ELECTRICAL-IMPEDANCE TOMOGRAPHY WITH BASIS CONSTRAINTS

Authors
VAUHKONEN M KAIPIO JP SOMERSALO E KARJALAINEN PA
Citation
M. Vauhkonen et al., ELECTRICAL-IMPEDANCE TOMOGRAPHY WITH BASIS CONSTRAINTS, Inverse problems, 13(2), 1997, pp. 523-530
Citations number
12
Categorie Soggetti
Mathematical Method, Physical Science",Mathematics,"Physycs, Mathematical",Mathematics
Journal title
Inverse problems → ACNP
ISSN journal
02665611
Volume
13
Issue
2
Year of publication
1997
Pages
523 - 530
Database
ISI
SICI code
0266-5611(1997)13:2<523:ETWBC>2.0.ZU;2-2
Abstract
In this paper, we consider the impedance tomography problem of estimat ing the conductivity distribution within the body from static current/ voltage measurements on the body's surface. We present a new method of implementing prior information of the conductivities in the optimizat ion algorithm. The method is based on the approximation of the prior c ovariance matrix by simulated samples of feasible conductivities. The reduction of the dimensionality of the optimization problem is perform ed by principal component analysis (PCA).