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Proceedings Paper

Model-based imaging of cardiac electrical function in human atria
Author(s): Robert Modre; Bernhard Tilg; Gerald Fischer; Friedrich Hanser; Bernd Messnarz; Michael F. H. Schocke; Christian Kremser; Florian Hintringer; Franz Roithinger
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Paper Abstract

Noninvasive imaging of electrical function in the human atria is attained by the combination of data from electrocardiographic (ECG) mapping and magnetic resonance imaging (MRI). An anatomical computer model of the individual patient is the basis for our computer-aided diagnosis of cardiac arrhythmias. Three patients suffering from Wolff-Parkinson-White syndrome, from paroxymal atrial fibrillation, and from atrial flutter underwent an electrophysiological study. After successful treatment of the cardiac arrhythmia with invasive catheter technique, pacing protocols with stimuli at several anatomical sites (coronary sinus, left and right pulmonary vein, posterior site of the right atrium, right atrial appendage) were performed. Reconstructed activation time (AT) maps were validated with catheter-based electroanatomical data, with invasively determined pacing sites, and with pacing at anatomical markers. The individual complex anatomical model of the atria of each patient in combination with a high-quality mesh optimization enables accurate AT imaging, resulting in a localization error for the estimated pacing sites within 1 cm. Our findings may have implications for imaging of atrial activity in patients with focal arrhythmias.

Paper Details

Date Published: 15 May 2003
PDF: 10 pages
Proc. SPIE 5032, Medical Imaging 2003: Image Processing, (15 May 2003); doi: 10.1117/12.480127
Show Author Affiliations
Robert Modre, Univ. for Health Informatics and Technology Tyrol (Austria)
Bernhard Tilg, Univ. for Health Informatics and Technology Tyrol (Austria)
Gerald Fischer, Univ. for Health Informatics and Technology Tyrol (Austria)
Friedrich Hanser, Univ. for Health Informatics and Technology Tyrol (Austria)
Bernd Messnarz, Univ. for Health Informatics and Technology Tyrol (Austria)
Michael F. H. Schocke, Univ. Hospital Innsbruck (Austria)
Christian Kremser, Univ. Hospital Innsbruck (Austria)
Florian Hintringer, Univ. Hospital Innsbruck (Austria)
Franz Roithinger, Univ. Hospital Innsbruck (Austria)


Published in SPIE Proceedings Vol. 5032:
Medical Imaging 2003: Image Processing
Milan Sonka; J. Michael Fitzpatrick, Editor(s)

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