Noninvasive measurement of physiological functions in a living body by transillumination

Koichi Shimizu, Masataka Kitama, Mitsuhiro Mouri, Katsuyuki Yamamoto

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

Abstract

With the view toward the non-invasive imaging of biological functions with light, a fundamental study has been conducted. Using a near-infrared light, the transillumination images of the head of a rat were obtained. The change in the image was investigated, when the oxygen fraction of inhalation gas was changed and when the brain circulation was changed by occluding the carotid artery. It was found that the changes in the brain blood volume and in the brain oxygenation state can be detected using multiple wavelengths of light. Further, the spatial distribution of these changes can be visualized in the transillumination images of a brain. Through this study, the feasibility of optical trans-body imaging of physiological functions was verified.

Original languageEnglish
Title of host publicationConference Proceedings - 10th Anniv., IMTC 1994
Subtitle of host publicationAdvanced Technologies in I and M. 1994 IEEE Instrumentation and Measurement Technology Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages982-985
Number of pages4
ISBN (Electronic)0780318803, 9780780318809
DOIs
Publication statusPublished - 1994 Jan 1
Externally publishedYes
Event1994 IEEE Instrumentation and Measurement Technology Conference, IMTC 1994 - Hamamatsu, Japan
Duration: 1994 May 101994 May 12

Publication series

NameConference Proceedings - 10th Anniv., IMTC 1994: Advanced Technologies in I and M. 1994 IEEE Instrumentation and Measurement Technology Conference

Conference

Conference1994 IEEE Instrumentation and Measurement Technology Conference, IMTC 1994
CountryJapan
CityHamamatsu
Period94/5/1094/5/12

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Instrumentation
  • Atomic and Molecular Physics, and Optics

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    Shimizu, K., Kitama, M., Mouri, M., & Yamamoto, K. (1994). Noninvasive measurement of physiological functions in a living body by transillumination. In Conference Proceedings - 10th Anniv., IMTC 1994: Advanced Technologies in I and M. 1994 IEEE Instrumentation and Measurement Technology Conference (pp. 982-985). [351941] (Conference Proceedings - 10th Anniv., IMTC 1994: Advanced Technologies in I and M. 1994 IEEE Instrumentation and Measurement Technology Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IMTC.1994.351941