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Special Section Technical Briefs

Designing and Implementing a Portable Near-Infrared Imaging System for Monitoring of Human's Brain Functional Activity1

[+] Author and Article Information
Y. R. Fatmehsari

Biomedical Engineering Program,
University of Manitoba,
Winnipeg, MB RL3 0G1, Canada
e-mail: rakhshay@cc.umanitoba.ca

Zahra Moussavi

Biomedical Engineering Program,
University of Manitoba,
Winnipeg, MB R3T 5V6, Canada
e-mail: zahra.moussavi@umanitoba.ca

Accepted and presented at The Design of Medical Devices Conference (DMD2015), April 13-16, 2015, Minneapolis, MN, USA.

Manuscript received March 3, 2015; final manuscript received March 16, 2015; published online April 24, 2015. Editor: Arthur Erdman.

J. Med. Devices 9(2), 020921 (Jun 01, 2015) (2 pages) Paper No: MED-15-1114; doi: 10.1115/1.4030133 History: Received March 03, 2015; Revised March 13, 2015; Online April 24, 2015

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References

Izzetoglu, K., Ayaz, H., Merzagora, A., Izzetoglu, M., Shewokis, P. A., Bunce, S. C., Pourrezaei, K., Rosen, A., and Onaral, B., 2011, “The Evolution of Field Deployable fNIR Spectroscopy From Bench to Clinical Settings,” J. Innovative Opt. Health Sci., 4(3), pp. 239–250. [CrossRef]
Yurtsever, G., Ayaz, H., Kepics, F., Onaral, B., and Pourrezaei, K., 2006, Wireless, Continuous Wave Near Infrared Spectroscopy System for Monitoring Brain Activity, Drexel University, Philadelphia, PA.
Chou, P. H., and Lan, T. H., 2013, “The Role of Near-Infrared Spectroscopy in Alzheimer's Disease,” J. Clin. Gerontol. Geriatr., 4(2), pp. 33–36. [CrossRef]
Watanabe, A., and Koto, T., 2004, “Cerebrovascular Response to Cognitive Tasks in Patients With Schizophrenia Measured by Near-Infrared Spectroscopy,” Schizophr. Bull., 30(2), pp. 435–444. [CrossRef] [PubMed]
Matsuo, K., Kato, N., and Kato, T., 2002, “Decreased Cerebral Haemodynamic Response to Cognitive and Physiological Tasks in Mood Disorders as Shown by Near-Infrared Spectroscopy,” Psychol. Med., 32(6), pp. 1029–1037. [CrossRef] [PubMed]
Watanabe, A., Matsuo, K., Kato, N., and Kato, T., 2003, “Cerebrovascular Response to Cognitive Tasks and Hyperventilation Measured by Multi-Channel Near-Infrared Spectroscopy,” J. Neuropsychiatry Clin. Neurosci., 15(4), pp. 442–449. [CrossRef] [PubMed]

Figures

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Fig. 4

The changes in concentration of oxygenated (top line), deoxygenated (bottom line) and total hemoglobin (middle line) of a subject for one channel and in response to VF task; 0–60 s, 60–180 s, and 180–300 s are rest, task, and rest states, respectively

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Fig. 3

The main (control) board of our CW-NIRS system and placement of LEDs and photodiodes on a flexible PCB

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Fig. 2

The order of turning ON and OFF of two wavelengths of three LEDs in our design. (Reproduced with permission from Yurtsever et al. [2]. Copyright 2006 by Drexel University.)

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Fig. 1

Arrangement of LEDs (S1–S3) and photo detectors (D1–D8) in our imaging system. (Reproduced with permission from Yurtsever et al. [2]. Copyright 2006 by Drexel University.)

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