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Anisotropic wave propagation and apparent conductivity estimation in a fast electrophysiological model: Application to XMR interventional imaging

Chinchapatnam, PP; Rhode, KS; King, A; Gao, G; Mat, Y; Schaeffter, T; ... Sermesant, M; + view all (2007) Anisotropic wave propagation and apparent conductivity estimation in a fast electrophysiological model: Application to XMR interventional imaging. In: Ayache, N and Ourselin, S and Maeder, A, (eds.) MEDICAL IMAGE COMPUTING AND COMPUTER-ASSISTED INTERVENTION - MICCAI 2007, PT 1, PROCEEDINGS. (pp. 575 - 583). SPRINGER-VERLAG BERLIN

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Abstract

Cardiac arrhythmias are increasingly being treated using ablation procedures. Development of fast electrophysiological models and estimation of parameters related to conduction pathologies can aid in the investigation of better treatment strategies during Radio-frequency ablations. We present a fast electrophysiological model incorporating anisotropy of the cardiac tissue. A global-local estimation procedure is also outlined to estimate a hidden parameter (apparent electrical conductivity) present in the model. The proposed model is tested on synthetic and real data derived using XMR imaging. We demonstrate a qualitative match between the estimated conductivity parameter and possible pathology locations. This approach opens up possibilities to directly integrate modelling in the intervention room.

Type:Proceedings paper
Title:Anisotropic wave propagation and apparent conductivity estimation in a fast electrophysiological model: Application to XMR interventional imaging
Event:10th International Conference on Medical Image Computing and Computer-Assisted Intervention (MICCAI 2007)
Location:Brisbane, AUSTRALIA
Dates:2007-10-29 - 2007-11-02
ISBN-13:978-3-540-75756-6
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Computer Science
UCL > School of BEAMS > Faculty of Engineering Science > Medical Physics and Bioengineering

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