ECG imaging of ventricular tachycardia: evaluation against simultaneous non-contact mapping and CMR-derived grey zone

Abstract : ECG imaging is an emerging technology for the reconstruction of cardiac electric activity from non-invasively measured body surface potential maps. In this case report, we present the first evaluation of transmurally imaged activation times against endocardially reconstructed isochrones for a case of sustained monomorphic ventricular tachycardia (VT). Computer models of the thorax and whole heart were produced from MR images. A recently published approach was applied to facilitate electrode localization in the catheter laboratory, which allows for the acquisition of body surface potential maps while performing non-contact mapping for the reconstruction of local activation times. ECG imaging was then realized using Tikhonov regularization with spatio-temporal smoothing as proposed by Huiskamp and Greensite and further with the spline-based approach by Erem et al. Activation times were computed from transmurally reconstructed transmembrane voltages. The results showed good qualitative agreement between the non-invasively and invasively reconstructed activation times. Also, low amplitudes in the imaged transmembrane voltages were found to correlate with volumes of scar and grey zone in delayed gadolinium enhancement cardiac MR. The study underlines the ability of ECG imaging to produce activation times of ventricular electric activity—and to represent effects of scar tissue in the imaged transmembrane voltages.
Type de document :
Article dans une revue
Medical and Biological Engineering and Computing, Springer Verlag, 2017, 55 (6), pp.979 - 990. 〈10.1007/s11517-016-1566-x〉
Liste complète des métadonnées

Littérature citée [90 références]  Voir  Masquer  Télécharger

https://hal.inria.fr/hal-01598299
Contributeur : Project-Team Asclepios <>
Soumis le : vendredi 29 septembre 2017 - 16:09:40
Dernière modification le : vendredi 12 janvier 2018 - 11:03:53
Document(s) archivé(s) le : samedi 30 décembre 2017 - 14:00:53

Fichier

10.1007-s11517-016-1566-x.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Collections

Citation

Walther Schulze, Zhong Chen, Jatin Relan, Danila Potyagaylo, Martin W. Krueger, et al.. ECG imaging of ventricular tachycardia: evaluation against simultaneous non-contact mapping and CMR-derived grey zone. Medical and Biological Engineering and Computing, Springer Verlag, 2017, 55 (6), pp.979 - 990. 〈10.1007/s11517-016-1566-x〉. 〈hal-01598299〉

Partager

Métriques

Consultations de la notice

110

Téléchargements de fichiers

24