Detection of physiological changes after exercise via a remote optophysiological.pdf (904.6 kB)

Detection of physiological changes after exercise via a remote optophysiological imaging system

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journal contribution
posted on 03.08.2016, 11:23 by Yu Sun, Sijung Hu, V Azorin-Peris, Jia Zheng, Stephen Greenwald, Jonathon Chambers, Yisheng Zhu
A study of blood perfusion mapping was performed with a remote opto-physiological imaging (OPI) system coupling a sensitive CMOS camera and a custom-built resonant cavity light emitting diode (RCLED) ringlight. The setup is suitable for the remote assessment of blood perfusion in tissue over a wide range of anatomical locations. The purpose of this study is to evaluate the reliability and stability of the OPI system when measuring a cardiovascular variable of clinical interest, in this case, heart rate. To this end, the non-contact and contact photoplethysmographic (PPG) signals obtained from the OPI system and conventional PPG sensor were recorded simultaneously from each of 12 subjects before and after 5-min of cycling exercise. The time-frequency representation (TFR) method was used to visualize the timedependent behavior of the signal frequency. The physiological parameters derived from the images captured by the OPI system exhibit comparable functional characteristics to those taken from conventional contact PPG pulse waveform measurements in both the time and frequency domains. Finally and more importantly, a previously developed optophysiological model was employed to provide a 3-D representation of blood perfusion in human tissue which could provide a new insight into clinical assessment and diagnosis of circulatory pathology in various tissue segments.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Biomedical Optics, Photonics West 2011 Design and Quality for Biomedical Technologies IV

Volume

7891

Pages

. 78910E 1 - 8

Citation

SUN, Y. ... et al., 2011. Detection of physiological changes after exercise via a remote optophysiological imaging system. Proceedings of SPIE, 7891, DOI: 10.1117/12.872723.

Publisher

© SPIE

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2011

Notes

© 2011 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

ISBN

9780819484284

ISSN

0277-786X

eISSN

1996-756X

Language

en

Location

San Francisco, California, USA

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