Dynamics of Skin Blood Flow Obtained from Patients with Peripheral Arterial Occlusive Disease and Type-I Diabetes — Non Contact Determination Using the Laser Speckle Method

  • B. Ruth
  • J. Schmand
  • D. Abendroth
Conference paper


The determination of skin blood flow provides essential information in diseases with impaired blood flow. Since the skin of these patients is very sensitive and may easily be injured, a real non contact method to measure blood flow is advantageous. Light of the wavelength 632.8 nm (He-Ne-laser) has a mean penetration depth of 0.4 mm in human skin and it can therefore be scattered by the red blood cells in the micro-vessels near the skin surface. Several attempts have been made to utilize laser light for skin blood flow determination. Most of these devices use optical fibres for laser light illumination and the detection of the scattered light. As these fibres must be attached to the skin by a special probe, no real non contact measurement is possible (laser Doppler method, [1]). Especially the detachment of the probe from the skin bears the risk of injuring the sensitive skin.


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  1. [1]
    A.P. Shepherd, P.A. Öberg (Edts), Laser Doppler blood flowmetry, Kluwer Academic Publishers, Dordrecht, 1990.Google Scholar
  2. [2]
    B. Ruth, Blood flow determination by the laser speckle method. Int.J.Microcirc: Clin Exp 9: 21–45 (1990).Google Scholar
  3. [3]
    B. Ruth, J. Schmand, D. Abendroth. Noncontact determination of skin blood flow using the laser speckle method: Application to patients with peripheral arterial occlusive disease (PAOD) and to type-I diabetics. Lasers in Surgery and Medicine 13:179–188 (1993).CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1994

Authors and Affiliations

  • B. Ruth
    • 1
  • J. Schmand
    • 2
  • D. Abendroth
    • 3
  1. 1.GSF - Research Centre for Environment and HealthNeuherbergGermany
  2. 2.Chirurgische Klinik und PoliklinikKlinikum GroßhadernMünchenDeutschland
  3. 3.Abt. für Gefäß-, Thorax- und HerzchirurgieUniversitätsklinik UlmUlmDeutschland

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