Intraoperative Optical Monitoring of Spinal Cord Hemodynamics Using Multiwavelength Imaging System - Archive ouverte HAL Access content directly
Journal Articles Sensors Year : 2022

Intraoperative Optical Monitoring of Spinal Cord Hemodynamics Using Multiwavelength Imaging System

Nicolas Mainard
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  • PersonId : 1142174
Songlin Li
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  • PersonId : 1142175
Julien Denoulet
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  • PersonId : 955697
Karim Messaoudene
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  • PersonId : 1134922
Raphael Vialle
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  • PersonId : 986366
Sylvain Feruglio

Abstract

The spinal cord is a major structure of the central nervous system allowing, among other things, the transmission of afferent sensory and efferent motor information. During spinal surgery, such as scoliosis correction, this structure can be damaged, resulting in major neurological damage to the patient. To date, there is no direct way to monitor the oxygenation of the spinal cord intraoperatively to reflect its vitality. This is essential information that would allow surgeons to adapt their procedure in case of ischemic suffering of the spinal cord. We report the development of a specific device to monitor the functional status of biological tissues with high resolution. The device, operating with multiple wavelengths, uses Near-InfraRed Spectroscopy (NIRS) in combination with other additional sensors, including ElectroNeuroGraphy (ENG). In this paper, we focused primarily on aspects of the PhotoPlethysmoGram (PPG), emanating from four different light sources to show in real time and record biological signals from the spinal cord in transmission and reflection modes. This multispectral system was successfully tested in in vivo experiments on the spinal cord of a pig for specific medical applications.

Dates and versions

hal-03674686 , version 1 (20-05-2022)

Identifiers

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Nicolas Mainard, Olivier Tsiakaka, Songlin Li, Julien Denoulet, Karim Messaoudene, et al.. Intraoperative Optical Monitoring of Spinal Cord Hemodynamics Using Multiwavelength Imaging System. Sensors, 2022, 22 (10), pp.3840. ⟨10.3390/s22103840⟩. ⟨hal-03674686⟩
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