Relation between hematocrit and optical density in pulse oximetry -In vitro study with Waseda mock circulatory system

H. Suzaki, N. Kobayashi, H. Kubota, T. Aomi, T. Nagaoka, Kiyotaka Iwasaki, Mitsuo Umezu, S. Takeda, A. Uchiyama

    研究成果: Conference contribution

    5 引用 (Scopus)

    抜粋

    Optical properties of living tissues have not been well established even today, and bioopticinstrumentations have to be based on empirical formulae. In order to examine optical properties of the tissue having pulsating blood perfusion, we investigated the relation between optical density (defined as O.D.) of whole blood and hematocrit by transmission spectrophotometry. We used Waseda mock circulatory system that simulates blood circulation in the tissue. It was found that with increasing light path length, O.D. per unit light path length due to scattering and absorption effect, tended to become constant in each hematocrit. For wavelengths of 660, 805 and 940 nm, the relations between O.D. of whole blood and hematocrit predicted by Twersky's equation, Loewinger's equation and photon diffusion equation fitted to the data obtained. Meanwhile, for 1300 nm, the relation predicted by Loewinger's equation gave the best fit to the data.

    元の言語English
    ホスト出版物のタイトルAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
    ページ2626-2629
    ページ数4
    7 VOLS
    出版物ステータスPublished - 2005
    イベント2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005 - Shanghai
    継続期間: 2005 9 12005 9 4

    Other

    Other2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005
    Shanghai
    期間05/9/105/9/4

      フィンガープリント

    ASJC Scopus subject areas

    • Bioengineering

    これを引用

    Suzaki, H., Kobayashi, N., Kubota, H., Aomi, T., Nagaoka, T., Iwasaki, K., Umezu, M., Takeda, S., & Uchiyama, A. (2005). Relation between hematocrit and optical density in pulse oximetry -In vitro study with Waseda mock circulatory system. : Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (巻 7 VOLS, pp. 2626-2629). [1617008]