Model-based imaging of cardiac electrical function in human atria

Robert Modre; Bernhard Tilg; Gerald Fischer; Friedrich Hanser; Bernd Messnarz; Michael F. H. Schocke; Christian Kremser; Florian Hintringer; Franz Roithinger M.D.

doi:10.1117/12.480127

15 May 2003 Model-based imaging of cardiac electrical function in human atria

Robert Modre, Bernhard Tilg, Gerald Fischer, Friedrich Hanser, Bernd Messnarz, Michael F. H. Schocke, Christian Kremser, Florian Hintringer, Franz Roithinger M.D.

Author Affiliations +

Proceedings Volume 5032, Medical Imaging 2003: Image Processing; (2003) https://doi.org/10.1117/12.480127
Event: Medical Imaging 2003, 2003, San Diego, California, United States

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.

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Robert Modre, Bernhard Tilg, Gerald Fischer, Friedrich Hanser, Bernd Messnarz, Michael F. H. Schocke, Christian Kremser, Florian Hintringer, and Franz Roithinger M.D. "Model-based imaging of cardiac electrical function in human atria", Proc. SPIE 5032, Medical Imaging 2003: Image Processing, (15 May 2003); https://doi.org/10.1117/12.480127

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KEYWORDS

Electrocardiography

Associative arrays

Data modeling

Magnetic resonance imaging

Electrodes

Heart

Photovoltaics

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