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Proceedings Paper

Noninvasive hemoglobin oxygenation monitor and computed tomography by NIR spectrophotometry
Author(s): Ichiro Oda; Yasunobu Ito; Hideo Eda; Tomomi Tamura; Michinosuke Takada; Rentaro Abumi; Katumi Nagai; Hachiro Nakagawa; Masahide Tamura
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Paper Abstract

Using a near infrared (NIR) spectrophotometry, a compact instrument for monitoring the hemoglobin (Hb) oxygenation state in human brain was developed. Brian oxygen metabolism was non-invasively studied by simultaneous measurement of oxygenated Hb, deoxygnated Hb and total Hb content in rat and human head. After evaluating our method using anesthetized and artificially ventilated rats, this instrument was applied for clinical use, and was useful for the management of clinical patients. The same method was applied to develope the NIR computed tomography (CT). Human X-ray CT was modified for NIR-CT, and CT images were obtained using the back-projection (BP) method. NIR-CT could measure the oxygenation map of the tissues of anesthetized rats.

Paper Details

Date Published: 1 May 1991
PDF: 10 pages
Proc. SPIE 1431, Time-Resolved Spectroscopy and Imaging of Tissues, (1 May 1991); doi: 10.1117/12.44199
Show Author Affiliations
Ichiro Oda, Shimadzu Corp. (Japan)
Yasunobu Ito, Shimadzu Corp. (Japan)
Hideo Eda, Shimadzu Corp. (Japan)
Tomomi Tamura, Shimadzu Corp. (Japan)
Michinosuke Takada, Shimadzu Corp. (Japan)
Rentaro Abumi, Osaka Univ. (Japan)
Katumi Nagai, Osaka Univ. (Japan)
Hachiro Nakagawa, Osaka Univ. (Japan)
Masahide Tamura, Asahikawa Medical College (Japan)


Published in SPIE Proceedings Vol. 1431:
Time-Resolved Spectroscopy and Imaging of Tissues
Britton Chance, Editor(s)

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