Theoretical and experimental investigation of the influence of frontal sinus on the sensitivity of the NIRS Signal in the adult head

Eiji Okada, Daisuke Yamamoto, Naoya Kiryu, Akihisa Katagiri, Noriaki Yokose, Takashi Awano, Kouji Igarashi, Sin Nakamura, Tatsuya Hoshino, Yoshihiro Murata, Tsuneo Kano, Kaoru Sakatani, Yoichi Katayama

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    11 Citations (Scopus)

    Abstract

    The sensitivity of the near-infrared spectroscopy signal to the brain activation depends on the thickness and structure of the superficial tissues. The influence of the frontal sinus, which is void region in the skull, on the sensitivity to the brain activation is investigated by the time-resolved experiments and the theoretical modelling of the light propagation in the head. In the time-resolved experiments, the mean-time of flight for the forehead scarcely depends upon the existence of the frontal sinus when probe spacing was shorter than 30 mm. The partial optical path length in the brain, which indicates the sensitivity of the near-infrared spectroscopy signal to the brain activation, in a simplified head model is predicted by Monte Carlo simulation. The influence of the frontal sinus on the sensitivity of the signal depends on the thickness of the skull and the depth of the frontal sinus.

    Original languageEnglish
    Title of host publicationOxygen Transport to Tissue XXXI
    EditorsEiji Takahashi, Duane Bruley
    Pages231-236
    Number of pages6
    DOIs
    Publication statusPublished - 2010 Dec 1

    Publication series

    NameAdvances in Experimental Medicine and Biology
    Volume662
    ISSN (Print)0065-2598

    ASJC Scopus subject areas

    • Biochemistry, Genetics and Molecular Biology(all)

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  • Cite this

    Okada, E., Yamamoto, D., Kiryu, N., Katagiri, A., Yokose, N., Awano, T., Igarashi, K., Nakamura, S., Hoshino, T., Murata, Y., Kano, T., Sakatani, K., & Katayama, Y. (2010). Theoretical and experimental investigation of the influence of frontal sinus on the sensitivity of the NIRS Signal in the adult head. In E. Takahashi, & D. Bruley (Eds.), Oxygen Transport to Tissue XXXI (pp. 231-236). (Advances in Experimental Medicine and Biology; Vol. 662). https://doi.org/10.1007/978-1-4419-1241-1_33