Calibration system for pulse spectrophotometry using a double-layer pulsation flow-cell.

M. Oura, N. Kobayashi, S. Yamamori, S. Takeda, K. Iwasaki, M. Umezu

研究成果: Article査読

抄録

We have studied noninvasive devices for measuring total hemoglobin and hemoglobin derivatives such as carboxyhemoglobin (COHb) and methemoglobin (MetHb). A calibration procedure needs to be developed to evaluate or calibrate these devices and pulse oximeters for clinical practice. However, people and animals are sometimes exposed to risk when they are used for calibration. In this paper, we propose a new in vitro calibration system for a pulse photometer. This system has a novel double-layer pulsation flow-cell that incorporates both venous and arterial blood flow. Using the calibration system, we are able to measure the in vitro pulsatile optical density ratio (Phivt). The measured Phivt agrees well with the in vivo pulsatile optical density ratio (Phivi). This system simulates an in vivo environment with high accuracy and enables safe calibration. Consequently, the calibration system is able to standardize the performance and accuracy of pulse photometry.

本文言語English
ページ(範囲)896-899
ページ数4
ジャーナルConference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference
出版ステータスPublished - 2009
外部発表はい

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Signal Processing
  • Biomedical Engineering
  • Health Informatics

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