Noninvasive Method for Evaluation of the Ratschow Test

  • V. Wienert
  • V. Blazek
Conference paper
Part of the Springer Series in Optical Sciences book series (SSOS, volume 31)


Occlusive arterial disease (OAD) is diagnosed on the basis of clinical symptoms and then assigned to stages I–IV according to FONTAINE [1]. In disorders of arterial blood flow, the color of the skin and filling of the veins is altered in a characteristic way by changing the position of the limb. According to the procedure practiced so far, it is diagnosed visually by the doctor (RATSCHOW test). This evaluation is subjective, since the human eye cannot detect color changes objectively. It is thus entirely possible to arrive at different evaluation criteria under different illumination.


Scattered Radiation Arterial Blood Flow Occlusive Arterial Disease Radiation Emitter Cutaneous Blood Flow 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1982

Authors and Affiliations

  • V. Wienert
    • 1
  • V. Blazek
    • 2
  1. 1.Department of DermatologyUniversity of AachenAachenFed. Rep, of Germany
  2. 2.Institute of High-Frequency TechnologyUniversity of AachenAachenFed. Rep, of Germany

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