Improvement of near-infrared topography by optode arrangement and reconstruction algorithm using spatial sensitivity profile

Hiroshi Kawaguchi, Toshiyuki Hayashi, Toshinori Kato, Eiji Okada

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

    Abstract

    Near-infrared topographic imaging can noninvasively measure the distribution of brain activation in the cortex. The near-infrared light is strongly scattered in the superficial tissues and the volume of tissue sampled by a source-detector pair of the imaging system is broadly distributed in the cortical tissue. This poses results in poor spatial resolution and contrast in the topographic images. In this study, we propose reconstruction algorithm for near- infrared topographic imaging using the spatial sensitivity profile. The profile of absorption change in the head model is calculated to evaluate the proposed algorithm. The width of the profiles calculated by the proposed algorithm is smaller than that by the conventional mapping algorithm. The profiles calculated by the proposed algorithm agree with the correct distribution when the interval of the source-detector pairs is less than 8 mm.

    Original languageEnglish
    Title of host publicationAPBME 2003 - IEEE EMBS Asian-Pacific Conference on Biomedical Engineering 2003
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages314-315
    Number of pages2
    ISBN (Print)0780379438, 9780780379435
    DOIs
    Publication statusPublished - 2003
    EventIEEE EMBS Asian-Pacific Conference on Biomedical Engineering 2003, APBME 2003 - Kyoto-Osaka-Nara, Japan
    Duration: 2003 Oct 202003 Oct 22

    Other

    OtherIEEE EMBS Asian-Pacific Conference on Biomedical Engineering 2003, APBME 2003
    CountryJapan
    CityKyoto-Osaka-Nara
    Period03/10/2003/10/22

    Keywords

    • Image reconstruction technique
    • Medical and biological imaging
    • Near infrared spectroscopy

    ASJC Scopus subject areas

    • Biomedical Engineering

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  • Cite this

    Kawaguchi, H., Hayashi, T., Kato, T., & Okada, E. (2003). Improvement of near-infrared topography by optode arrangement and reconstruction algorithm using spatial sensitivity profile. In APBME 2003 - IEEE EMBS Asian-Pacific Conference on Biomedical Engineering 2003 (pp. 314-315). [1302710] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APBME.2003.1302710