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, K. Iwasaki, M. Umezu, S. Takeda, A. Uchiyama

*この研究の対応する著者

研究成果: Conference contribution

6 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトルProceedings of the 2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005
出版社Institute of Electrical and Electronics Engineers Inc.
ページ2626-2629
ページ数4
ISBN(印刷版)0780387406, 9780780387409
DOI
出版ステータスPublished - 2005 1 1
イベント2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005 - Shanghai, China
継続期間: 2005 9 12005 9 4

出版物シリーズ

名前Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
7 VOLS
ISSN(印刷版)0589-1019

Conference

Conference2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005
国/地域China
CityShanghai
Period05/9/105/9/4

ASJC Scopus subject areas

  • 信号処理
  • 生体医工学
  • コンピュータ ビジョンおよびパターン認識
  • 健康情報学

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