A Baseline Wander Tracking System for Artifact Rejection in Long-Term Electrocardiography

Niederhauser, Thomas; Marisa, Thanks; Kohler, L; Häberlin, Andreas; Wildhaber, Reto; Abächerli, R; Götte, Josef; Jacomet, M; Vogel, Rolf (2016). A Baseline Wander Tracking System for Artifact Rejection in Long-Term Electrocardiography. IEEE transactions on biomedical circuits and systems, 10(1), pp. 255-265. Institute of Electrical and Electronics Engineers IEEE 10.1109/TBCAS.2015.2395997

[img] Text
07063275.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (1MB) | Request a copy

Long-term electrocardiogram (ECG) signals might suffer from relevant baseline disturbances during physical activity. Motion artifacts in particular are more pronounced with dry surface or esophageal electrodes which are dedicated to prolonged ECG recording. In this paper we present a method called baseline wander tracking (BWT) that tracks and rejects strong baseline disturbances and avoids concurrent saturation of the analog front-end. The proposed algorithm shifts the baseline level of the ECG signal to the middle of the dynamic input range. Due to the fast offset shifts, that produce much steeper signal portions than the normal ECG waves, the true ECG signal can be reconstructed offline and filtered using computationally intensive algorithms. Based on Monte Carlo simulations we observed reconstruction errors mainly caused by the non-linearity inaccuracies of the DAC. However, the signal to error ratio of the BWT is higher compared to an analog front-end featuring a dynamic input ranges above 15 mV if a synthetic ECG signal was used. The BWT is additionally able to suppress (electrode) offset potentials without introducing long transients. Due to its structural simplicity, memory efficiency and the DC coupling capability, the BWT is dedicated to high integration required in long-term and low-power ECG recording systems.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Cardiovascular Engineering (CVE)
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research
04 Faculty of Medicine > Pre-clinic Human Medicine > Institute of Anatomy
04 Faculty of Medicine > Department of Cardiovascular Disorders (DHGE) > Clinic of Cardiology
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > DBMR Forschung Mu35 > Forschungsgruppe Kardiologie
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > DBMR Forschung Mu35 > Forschungsgruppe Kardiologie

UniBE Contributor:

Niederhauser, Thomas; Marisa, Thanks; Häberlin, Andreas; Wildhaber, Reto; Götte, Josef and Vogel, Rolf

Subjects:

500 Science > 570 Life sciences; biology
600 Technology > 610 Medicine & health

ISSN:

1932-4545

Publisher:

Institute of Electrical and Electronics Engineers IEEE

Language:

English

Submitter:

Dr. Andreas Häberlin

Date Deposited:

04 Jun 2015 11:01

Last Modified:

24 May 2017 16:34

Publisher DOI:

10.1109/TBCAS.2015.2395997

PubMed ID:

25794395

BORIS DOI:

10.7892/boris.69010

URI:

https://boris.unibe.ch/id/eprint/69010

Actions (login required)

Edit item Edit item
Provide Feedback