Data fusion of left ventricle Electro-Anatomic Mapping and Multislice Computerized Tomography for Cardiac Resynchronisation Therapy optimization

François Tavard 1 Antoine Simon 1 Christophe Leclercq 1, 2 Philippe Mabo 1, 2 Alfredo Hernandez 1 Mireille Garreau 1, *
* Auteur correspondant
1 LTSI - Laboratoire Traitement du Signal et de l'Image
2 Service de cardiologie et maladies vasculaires
Abstract : Cardiac Resynchronization Therapy is a treatment for bi-ventricular asynchronism. It can be optimized by the identification of the most effective pacing sites. The aim of this study is to provide a helpful tool to perform this identification by the fusion of electrical and anatomical information resulting from Electro-Anatomic Mapping (EAM) data and Multislice Computerized Tomography (MSCT) imaging. EAM data provide an approximation of the left ventricle (LV) 3D-surface (SEAM). Left cardiac chambers are segmented from MSCT imaging and surfaces are reconstructed (SCT). In order to represent this information in a unified framework, a three steps method is proposed: (1) the LV is separated from the left auricle on SCT providing S'CT; (2) a semi-automatic rigid registration method is applied to SEAM and S'CT; (3) activation time delays are estimated on S'CT from the EAM data. This method results in a graphical interface offering to clinicians means to identify abnormal electrical activity sites.
Keywords : MSCT image segmentation abnormal electrical activity sites activation time delays anatomical information biventricular asynchronism cardiac resynchronisation therapy optimization data fusion electrical fusion graphical interface image reconstruction left cardiac chambers left ventricle 3D-surface left ventricle electro-anatomic mapping multislice computerized tomography semiautomatic rigid registration method
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Communication dans un congrès
Computers In Cardiology, Sep 2009, Park City, UT, United States. pp.613 - 616, 2010
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François Tavard, Antoine Simon, Christophe Leclercq, Philippe Mabo, Alfredo Hernandez, et al.. Data fusion of left ventricle Electro-Anatomic Mapping and Multislice Computerized Tomography for Cardiac Resynchronisation Therapy optimization. Computers In Cardiology, Sep 2009, Park City, UT, United States. pp.613 - 616, 2010. 〈inserm-00530942〉

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