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Noninvasive Method for Evaluation of the Ratschow Test

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

Abstract

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.

Keywords

Scattered Radiation Arterial Blood Flow Occlusive Arterial Disease Radiation Emitter Cutaneous Blood Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    WIDMER, L., WAIBEL, P.: Arterielle Durchblutungsstörungen in der Praxis. Huber Verlag Bern 1972.Google Scholar
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    HERTZMAN, A.B.: The blood supply of varbus skin areas estimated by photoelectric plethysmography. Am. J.Physiol. 124 (1938), 328–340.Google Scholar
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    BLAZEK, V.: Absorptions-und Streuverhalten biologischer Gewebe bzgl. der monochromatischen, optischen Strahlung. Biomed. Techn. 24 (Erg.-Band) (1979), 84–85.CrossRefGoogle Scholar
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    BLAZEK, V., WIENERT, V.: Licht-Reflexions-Rheographie: Eine nichtinvasive Technik zur Beurteilung der chronisch-venösen Insuffizienz. Wiss. Ber. 6. Jahrestag.Österr. Ges. f. Biomed. Techn. (1981), 267–271.Google Scholar

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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