Crosstalk in the measurement of focal brain activation by near-infrared topography

N. Okui, Eiji Okada

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

Abstract

Crosstalk between oxy- and deoxy-haemoglobin observed in near-infrared topography is investigated. The light propagation in an adult head model is predicted by Monte Carlo simulation to obtain the change in intensity detected with source-detector pairs on the scalp caused by a focal absorption change in the brain. The topographic images of changes in oxy- and deoxy-haemoglobin are obtained from the changes in intensity detected with source-detector pairs on the scalp. The crosstalk depends on the relative position of the focal absorption change to source-detector pairs. The crosstalk is minimised when the focal absorption change is located below a measurement point that is the midpoint between a source and a detector. Appropriate selection of wavelength pair is effective to reduce the crosstalk in the topographic image.

Original languageEnglish
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
EditorsK. Licha, R. Cubeddu
Pages1-8
Number of pages8
Volume5859
Publication statusPublished - 2005
EventPhoton Migration and Diffuse-Light Imaging II - Munich, Germany
Duration: 2005 Jun 122005 Jun 16

Other

OtherPhoton Migration and Diffuse-Light Imaging II
CountryGermany
CityMunich
Period05/6/1205/6/16

Fingerprint

Hemoglobin
Crosstalk
Topography
Brain
Chemical activation
Infrared radiation
Detectors
Light propagation
Wavelength

Keywords

  • Crosstalk
  • Monte Carlo simulation
  • Near-infrared topography
  • Optical path length

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Okui, N., & Okada, E. (2005). Crosstalk in the measurement of focal brain activation by near-infrared topography. In K. Licha, & R. Cubeddu (Eds.), Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 5859, pp. 1-8). [58591A]

Crosstalk in the measurement of focal brain activation by near-infrared topography. / Okui, N.; Okada, Eiji.

Progress in Biomedical Optics and Imaging - Proceedings of SPIE. ed. / K. Licha; R. Cubeddu. Vol. 5859 2005. p. 1-8 58591A.

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

Okui, N & Okada, E 2005, Crosstalk in the measurement of focal brain activation by near-infrared topography. in K Licha & R Cubeddu (eds), Progress in Biomedical Optics and Imaging - Proceedings of SPIE. vol. 5859, 58591A, pp. 1-8, Photon Migration and Diffuse-Light Imaging II, Munich, Germany, 05/6/12.
Okui N, Okada E. Crosstalk in the measurement of focal brain activation by near-infrared topography. In Licha K, Cubeddu R, editors, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 5859. 2005. p. 1-8. 58591A
Okui, N. ; Okada, Eiji. / Crosstalk in the measurement of focal brain activation by near-infrared topography. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. editor / K. Licha ; R. Cubeddu. Vol. 5859 2005. pp. 1-8
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