DocumentCode :
1197711
Title :
Jacobian calculation for electrical impedance tomography based on the reciprocity principle
Author :
Brandstätter, Bernhard
Author_Institution :
Christian Doppler Lab. for Automotive Meas. Res., Graz Univ. of Technol., Austria
Volume :
39
Issue :
3
fYear :
2003
fDate :
5/1/2003 12:00:00 AM
Firstpage :
1309
Lastpage :
1312
Abstract :
Electrical impedance tomography is a noninvasive method, which is particularly useful for patient monitoring. For reconstructing the interior of the human body, a finite-element model is established and the inverse problem is solved by means of a Gauss-Newton method, which requires the Jacobian, describing the mapping between voltage distribution on the body´s surface and the conductivity distribution in the interior. The calculation of the Jacobian has to meet an accuracy requirement as well as a minimal processing time requirement. In this paper, the reciprocity principle is applied to meet both requirements leading to good results for the reconstruction.
Keywords :
Jacobian matrices; Newton method; electric impedance imaging; finite element analysis; inverse problems; Gauss-Newton method; Jacobian matrix; conductivity distribution; electrical impedance tomography; finite element model; human body; inverse problem; noninvasive method; patient monitoring; reciprocity principle; voltage distribution; Biological system modeling; Finite element methods; Humans; Impedance; Inverse problems; Jacobian matrices; Least squares methods; Newton method; Patient monitoring; Tomography;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2003.810390
Filename :
1198461
Link To Document :
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