31 May 2017 Simulated altitude exposure assessment by hyperspectral imaging
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Testing the human body’s reaction to hypoxia (including the one generated by high altitude) is important in aeronautic medicine. This paper presents a method of monitoring blood oxygenation during experimental hypoxia using hyperspectral imaging (HSI) and a spectral unmixing model based on a modified Beer–Lambert law. A total of 20 healthy volunteers (males) aged 25 to 60 years were included in this study. A line-scan HSI system was used to acquire images of the faces of the subjects. The method generated oxyhemoglobin and deoxyhemoglobin distribution maps from the foreheads of the subjects at 5 and 10 min of hypoxia and after recovery in a high oxygen breathing mixture. The method also generated oxygen saturation maps that were validated using pulse oximetry. An interesting pattern of desaturation on the forehead was discovered during the study, showing one of the advantages of using HSI for skin oxygenation monitoring in hypoxic conditions. This could bring new insight into the physiological response to high altitude and may become a step forward in air crew testing.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Mihaela Antonina Calin, Mihaela Antonina Calin, Adrian Macovei, Adrian Macovei, Sorin Miclos, Sorin Miclos, Sorin Viorel Parasca, Sorin Viorel Parasca, Roxana Savastru, Roxana Savastru, Razvan Hristea, Razvan Hristea, } "Simulated altitude exposure assessment by hyperspectral imaging," Journal of Biomedical Optics 22(5), 056012 (31 May 2017). https://doi.org/10.1117/1.JBO.22.5.056012 . Submission: Received: 20 January 2017; Accepted: 16 May 2017
Received: 20 January 2017; Accepted: 16 May 2017; Published: 31 May 2017

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