Investigation of a Camera-Based Contactless Pulse Oximeter with Time-Division Multiplex Illumination Applied on Piglets for Neonatological Applications
René Thull,
Sybelle Goedicke-Fritz,
Daniel Schmiech,
Aly Marnach,
Simon Müller,
Christina Körbel,
Matthias W. Laschke,
Erol Tutdibi,
Nasenien Nourkami-Tutdibi,
Elisabeth Kaiser,
Regine Weber,
Michael Zemlin,
Andreas R. Diewald
Affiliations
René Thull
Laboratory of Applied Radar Technology and Optical Systems (LaROS), Trier University of Applied Sciences, Schneidershof, 54293 Trier, Germany
Sybelle Goedicke-Fritz
Department of General Pediatrics and Neonatology, Saarland University, Campus Homburg, 66421 Homburg, Germany
Daniel Schmiech
Laboratory of Applied Radar Technology and Optical Systems (LaROS), Trier University of Applied Sciences, Schneidershof, 54293 Trier, Germany
Aly Marnach
Laboratory of Applied Radar Technology and Optical Systems (LaROS), Trier University of Applied Sciences, Schneidershof, 54293 Trier, Germany
Simon Müller
Laboratory of Applied Radar Technology and Optical Systems (LaROS), Trier University of Applied Sciences, Schneidershof, 54293 Trier, Germany
Christina Körbel
Institute for Clinical and Experimental Surgery, Saarland University, 66421 Homburg, Germany
Matthias W. Laschke
Institute for Clinical and Experimental Surgery, Saarland University, 66421 Homburg, Germany
Erol Tutdibi
Department of General Pediatrics and Neonatology, Saarland University, Campus Homburg, 66421 Homburg, Germany
Nasenien Nourkami-Tutdibi
Department of General Pediatrics and Neonatology, Saarland University, Campus Homburg, 66421 Homburg, Germany
Elisabeth Kaiser
Department of General Pediatrics and Neonatology, Saarland University, Campus Homburg, 66421 Homburg, Germany
Regine Weber
Department of General Pediatrics and Neonatology, Saarland University, Campus Homburg, 66421 Homburg, Germany
Michael Zemlin
Department of General Pediatrics and Neonatology, Saarland University, Campus Homburg, 66421 Homburg, Germany
Andreas R. Diewald
Laboratory of Applied Radar Technology and Optical Systems (LaROS), Trier University of Applied Sciences, Schneidershof, 54293 Trier, Germany
(1) Objective: This study aims to lay a foundation for noncontact intensive care monitoring of premature babies. (2) Methods: Arterial oxygen saturation and heart rate were measured using a monochrome camera and time-division multiplex controlled lighting at three different wavelengths (660 nm, 810 nm and 940 nm) on a piglet model. (3) Results: Using this camera system and our newly designed algorithm for further analysis, the detection of a heartbeat and the calculation of oxygen saturation were evaluated. In motionless individuals, heartbeat and respiration were separated clearly during light breathing and with only minor intervention. In this case, the mean difference between noncontact and contact saturation measurements was 0.7% (RMSE = 3.8%, MAE = 2.93%). (4) Conclusions: The new sensor was proven effective under ideal animal experimental conditions. The results allow a systematic improvement for the further development of contactless vital sign monitoring systems. The results presented here are a major step towards the development of an incubator with noncontact sensor systems for use in the neonatal intensive care unit.