Estimation of the Cardiac Field in the Esophagus Using a Multipolar Esophageal Catheter.

Wildhaber, Reto Andreas; Bruegger, Dominik; Zalmai, Nour; Malmberg, Hampus; Goette, Josef; Jacomet, Marcel; Tanner, Hildegard; Häberlin, Andreas; Loeliger, Hans-Andrea (2018). Estimation of the Cardiac Field in the Esophagus Using a Multipolar Esophageal Catheter. IEEE transactions on biomedical circuits and systems, 12(4), pp. 791-800. Institute of Electrical and Electronics Engineers IEEE 10.1109/TBCAS.2018.2817027

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The rapid progress of invasive therapeutic options for cardiac arrhythmias increases the need for accurate diagnostics. The surface electrocardiogram (ECG) is still the standard of noninvasive diagnostics but lacks atrial signal resolution. By contrast, esophageal electrocardiography (EECG) yields atrial signals of high amplitude and with a high signal-to-noise ratio. Esophageal electrocardiography has become fast and safe, but the mechanical constraints of esophageal measuring catheters and the "random" motion of the catheter inside the subject's esophagus limit the spatial resolution of EECG signals. In this paper, we propose a method to estimate the electrical field projected onto the esophagus with an increased spatial resolution, using commonly available esophageal catheters. In a first step, we estimate the time-varying catheter position, and in a second step, we estimate the projected electrical field with enhanced spatial resolution. The proposed algorithm comprises several consecutive optimization steps, where each intermediate step produces not just a single point estimate, but a cost function over multiple solutions, which reduces the information loss at each processing step. We conclude with examples from a clinical trial, where the fields of cardiac arrhythmias are presented as two-dimensional contour plots.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Cardiovascular Disorders (DHGE) > Clinic of Cardiology
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Cardiovascular Engineering (CVE) > ARTORG Center - Cardiovascular Engineering (Heart)

UniBE Contributor:

Tanner, Hildegard and Häberlin, Andreas

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1932-4545

Publisher:

Institute of Electrical and Electronics Engineers IEEE

Language:

English

Submitter:

Hildegard Tanner

Date Deposited:

27 Sep 2019 15:18

Last Modified:

27 Sep 2019 15:18

Publisher DOI:

10.1109/TBCAS.2018.2817027

PubMed ID:

29993892

URI:

https://boris.unibe.ch/id/eprint/126057

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