Medical and Biological Engineering and Computing

, Volume 17, Issue 6, pp 763–768 | Cite as

Backscattering of light by red cell suspensions

  • J. C. Barbenel
  • F. W. Turnbull
  • R. M. Nisbet
Article

Abstract

It is possible in principle to measure the blood content and oxygenation of the skin and superficial tissues by studying the backscattering of light from such tissues. It is normally assumed that photodiffusion theory may be used to relate reflectance to the optical properties of the tissue, and in order to test this assumption we have madein vitro measurements of the backscattered light from blood over a wide range of haematocrits. The experimental results are consistent with the theory, except over distances comparable with the photon mean free path in the blood.

Keywords

Backscattering Red cell suspensions 

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References

  1. Eason, G., Veitch, A. R., Nisbet, R. M. andTurnbull, F. W. (1978) The theory of the backscattering of light by blood.J. Phys. D.,11, 1463–1479.CrossRefGoogle Scholar
  2. Madgyesi, S. (1973) Photoelectric oscillometry.Scand. J. Plast. Reconstr. Surg.,7, 29–34.Google Scholar
  3. McKelvey, J. P., Longini, R. L. andBrody, T. P. (1961) Alternative approach to the solution of added carrier transport problems in semi-conductors.Phys. Rev.,123, 51–57.CrossRefGoogle Scholar
  4. Pisharoty, N. R. (1971) Optical scattering in blood. Ph.D. Thesis, Carnegie-Mellon University, Pittsburgh.Google Scholar
  5. Tornbull, F. W. (1977) The optical measurement of blood content and blood oxygenation in superficial tissue. Ph.D. Thesis, University of Strathclyde.Google Scholar
  6. Zijlstra, W. G. andMook, G. A. (1962)Medical reflection photometry, Van Gorcum, Assen, Netherlands.Google Scholar

Copyright information

© IFMBE 1979

Authors and Affiliations

  • J. C. Barbenel
    • 1
    • 2
  • F. W. Turnbull
    • 1
    • 2
  • R. M. Nisbet
    • 1
    • 2
  1. 1.Bioengineering UnitUniversity of StrathclydeGlasgowScotland
  2. 2.Department of Applied PhysicsUniversity of StrathclydeGlasgowScotland

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