Partial optical path length in the scalp in subject-specific head models for multi-distance probe configuration of near infrared spectroscopy

Taku Yanagisawa; Hiroshi Kawaguchi; Takayuki Obata; Eiji Okada

doi:10.1117/12.2319286

Partial optical path length in the scalp in subject-specific head models for multi-distance probe configuration of near infrared spectroscopy

Taku Yanagisawa, Hiroshi Kawaguchi, Takayuki Obata, Eiji Okada

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In the brain function measurement by near infrared spectroscopy using a multi-distance probe configuration, the ratio of the partial optical path length in the scalp for the long spacing probe pair to that for the short spacing probe pair is important for the calculation to eliminate the scalp component in the signal. Light propagation in the subject specific head models of 45 volunteers was calculated to predict the dependence of the partial optical path length in the scalp and the weighting factor for the multi-distance probe configuration. The weighting factor ranges from 1.0 to 2.3 and increases with the scalp thickness when the scalp thickness is less than 15 mm.

Original language	English
Title of host publication	Biomedical Imaging and Sensing Conference
Editors	Toyohiko Yatagai, Yoshihisa Aizu, Osamu Matoba, Yasuhiro Awatsuji, Yuan Luo
Publisher	SPIE
ISBN (Electronic)	9781510619791
DOIs	https://doi.org/10.1117/12.2319286
Publication status	Published - 2018 Jan 1
Event	Biomedical Imaging and Sensing Conference 2018 - Yokohama, Japan Duration: 2018 Apr 25 → 2018 Apr 27

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	10711
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Other

Other	Biomedical Imaging and Sensing Conference 2018
Country	Japan
City	Yokohama
Period	18/4/25 → 18/4/27

Keywords

Near-infrared spectroscopy
short spacing probe pair

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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Yanagisawa, T., Kawaguchi, H., Obata, T., & Okada, E. (2018). Partial optical path length in the scalp in subject-specific head models for multi-distance probe configuration of near infrared spectroscopy. In T. Yatagai, Y. Aizu, O. Matoba, Y. Awatsuji, & Y. Luo (Eds.), Biomedical Imaging and Sensing Conference [107111J] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10711). SPIE. https://doi.org/10.1117/12.2319286

Partial optical path length in the scalp in subject-specific head models for multi-distance probe configuration of near infrared spectroscopy. / Yanagisawa, Taku; Kawaguchi, Hiroshi; Obata, Takayuki; Okada, Eiji.

Biomedical Imaging and Sensing Conference. ed. / Toyohiko Yatagai; Yoshihisa Aizu; Osamu Matoba; Yasuhiro Awatsuji; Yuan Luo. SPIE, 2018. 107111J (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10711).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Yanagisawa, T, Kawaguchi, H, Obata, T & Okada, E 2018, Partial optical path length in the scalp in subject-specific head models for multi-distance probe configuration of near infrared spectroscopy. in T Yatagai, Y Aizu, O Matoba, Y Awatsuji & Y Luo (eds), Biomedical Imaging and Sensing Conference., 107111J, Proceedings of SPIE - The International Society for Optical Engineering, vol. 10711, SPIE, Biomedical Imaging and Sensing Conference 2018, Yokohama, Japan, 18/4/25. https://doi.org/10.1117/12.2319286

Yanagisawa T, Kawaguchi H, Obata T, Okada E. Partial optical path length in the scalp in subject-specific head models for multi-distance probe configuration of near infrared spectroscopy. In Yatagai T, Aizu Y, Matoba O, Awatsuji Y, Luo Y, editors, Biomedical Imaging and Sensing Conference. SPIE. 2018. 107111J. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.2319286

Yanagisawa, Taku ; Kawaguchi, Hiroshi ; Obata, Takayuki ; Okada, Eiji. / Partial optical path length in the scalp in subject-specific head models for multi-distance probe configuration of near infrared spectroscopy. Biomedical Imaging and Sensing Conference. editor / Toyohiko Yatagai ; Yoshihisa Aizu ; Osamu Matoba ; Yasuhiro Awatsuji ; Yuan Luo. SPIE, 2018. (Proceedings of SPIE - The International Society for Optical Engineering).

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AB - In the brain function measurement by near infrared spectroscopy using a multi-distance probe configuration, the ratio of the partial optical path length in the scalp for the long spacing probe pair to that for the short spacing probe pair is important for the calculation to eliminate the scalp component in the signal. Light propagation in the subject specific head models of 45 volunteers was calculated to predict the dependence of the partial optical path length in the scalp and the weighting factor for the multi-distance probe configuration. The weighting factor ranges from 1.0 to 2.3 and increases with the scalp thickness when the scalp thickness is less than 15 mm.

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Partial optical path length in the scalp in subject-specific head models for multi-distance probe configuration of near infrared spectroscopy

Abstract

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Keywords

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