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Proceedings Paper

Near-continuous non-contact cardiac pulse monitoring in a neonatal intensive care unit in near darkness
Author(s): Mark van Gastel; Benoît Balmaekers; Sidarto Bambang Oetomo; Wim Verkruysse
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Paper Abstract

Currently, the cardiac activity of infants in the Neonatal Intensive Care Unit (NICU) is monitored with contact sensors. These techniques can cause injuries and infections, particularly in very premature infants with fragile skin. Recently, remote photoplethysmography (rPPG) showed its potential to measure cardiac activity with a camera without skin contact. The main limitations of this technique are its lack of robustness to subject motion and visible light requirements. The aim of this study is to investigate the feasibility of robust rPPG for NICU patients in near darkness. Video recordings using dedicated infrared illumination were made of 7 infants, age 30-33 weeks, at a NICU in Eindhoven, The Netherlands. The pulse rate can be detected with an average error of 1.5 BPM and 2.1 BPM when measured at the face and upper torso region, respectively. Overall, the correct pulse rate is detected for 87% of the time. A camera-based framework for robust pulse extraction in near darkness of NICU patients was proposed and successfully validated. The pulse rate could be reliably detected from all evaluated skin regions. Recordings with vigorous body movements, involving occlusion of the selected skin region, are still a challenge.

Paper Details

Date Published: 20 February 2018
PDF: 9 pages
Proc. SPIE 10501, Optical Diagnostics and Sensing XVIII: Toward Point-of-Care Diagnostics, 1050114 (20 February 2018); doi: 10.1117/12.2293521
Show Author Affiliations
Mark van Gastel, Technische Univ. Eindhoven (Netherlands)
Benoît Balmaekers, Philips Research (Netherlands)
Sidarto Bambang Oetomo, Máxima Medisch Ctr. (Netherlands)
Technische Univ. Eindhoven (Netherlands)
Wim Verkruysse, Philips Research (Netherlands)

Published in SPIE Proceedings Vol. 10501:
Optical Diagnostics and Sensing XVIII: Toward Point-of-Care Diagnostics
Gerard L. Coté, Editor(s)

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