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Journal of Biomedical Optics

Development of motion resistant instrumentation for ambulatory near-infrared spectroscopy
Author(s): Quan Zhang; Gary E. Strangman; Xiangguo Yan
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Paper Abstract

Ambulatory near-infrared spectroscopy (aNIRS) enables recording of systemic or tissue-specific hemodynamics and oxygenation during a person's normal activities. It has particular potential for the diagnosis and management of health problems with unpredictable and transient hemodynamic symptoms, or medical conditions requiring continuous, long-duration monitoring. aNIRS is also needed in conditions where regular monitoring or imaging cannot be applied, including remote environments such as during spaceflight or at high altitude. One key to the successful application of aNIRS is reducing the impact of motion artifacts in aNIRS recordings. In this paper, we describe the development of a novel prototype aNIRS monitor, called NINscan, and our efforts to reduce motion artifacts in aNIRS monitoring. Powered by 2 AA size batteries and weighting 350 g, NINscan records NIRS, ECG, respiration, and acceleration for up to 14 h at a 250 Hz sampling rate. The system's performance and resistance to motion is demonstrated by long term quantitative phantom tests, Valsalva maneuver tests, and multiparameter monitoring during parabolic flight and high altitude hiking. To the best of our knowledge, this is the first report of multiparameter aNIRS monitoring and its application in parabolic flight.

Paper Details

Date Published: 1 August 2011
PDF: 13 pages
J. Biomed. Opt. 16(8) 087008 doi: 10.1117/1.3615248
Published in: Journal of Biomedical Optics Volume 16, Issue 8
Show Author Affiliations
Quan Zhang, Massachusetts General Hospital (United States)
Gary E. Strangman, Massachusetts General Hospital (United States)
Xiangguo Yan, Xi'an Jiaotong Univ. (China)

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