Speckle-contrast monitoring of tissue thermal modification

Measurements of the contrast value of time-averaged speckle-modulated images of cartilage tissue are used to study tissue thermal modification in the case of laser-light treatment. This modification is related to thermally induced internal stress relaxation in the matrix of the treated tissue. The s...

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Bibliographic Details
Published inApplied optics (2004) Vol. 41; no. 28; p. 5989
Main Authors Zimnyakov, Dmitry A, Agafonov, Dmitry N, Sviridov, Alexander P, Omel'chenko, Alexander I, Kuznetsova, Liana V, Bagratashvili, Victor N
Format Journal Article
LanguageEnglish
Published United States 01.10.2002
Subjects
Animals
Cartilage - physiology
Cartilage - radiation effects
Hot Temperature
In Vitro Techniques
Lasers
Swine
Temperature
Time Factors
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Summary:Measurements of the contrast value of time-averaged speckle-modulated images of cartilage tissue are used to study tissue thermal modification in the case of laser-light treatment. This modification is related to thermally induced internal stress relaxation in the matrix of the treated tissue. The specific feature of the evolution of time-averaged speckle contrast with a change in the current temperature of modified collagen tissue is the typical looplike form of the contrast-temperature dependencies associated with irreversible changes in tissue structure and correlated with changes in the tissue diffuse transmittance and the tissue internal stress mentioned by other researchers.
ISSN:1559-128X
DOI:10.1364/AO.41.005989