Reduction of NIRS near-surface sensitivity using two detectors

Author

Himeno, Hiromi ; Fujii, Mamiko ; Suzuki, Akifumi ; Nakayama, Kiyoshi

Author_Institution

Dept. of Electr. & Electron. Eng., Sophia Univ., Tokyo, Japan

Volume

4

fYear

1998

fDate

29 Oct-1 Nov 1998

Firstpage

1862

Abstract

A 1-source and 1-detector system commonly used in NIRS (near infrared spectroscopy) has considerable sensitivity in the near-surface region, which makes the measurement sensitive to skin blood flow and the thickness of the intervening tissue. This report proposes a 1-source and 2-detectors system in which logarithmic output of the 2-detectors are subtracted, giving the suppressed sensitivity in the near-surface region

Keywords

bio-optics; biological tissues; biomedical equipment; infrared spectroscopy; oximetry; photon transport theory; NIR spectroscopy; logarithmic output; model analysis; near-surface sensitivity reduction; oxygen consumption measurement; photon fluence density function; semi-infinite turbid media; skin blood flow sensitivity; suppressed sensitivity; tissue thickness sensitivity; two detectors use; Absorption; Blood flow; Detectors; Electromagnetic scattering; Equations; Fluid flow measurement; Infrared spectra; Particle scattering; Skin; Thickness measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE

Conference_Location

Hong Kong

ISSN

1094-687X

Print_ISBN

0-7803-5164-9

Type

conf

DOI

10.1109/IEMBS.1998.746956

Filename

746956