Analysis of laser-induced modification of collagen structure using nonlinear optical microscopy
Autor: | M. Yu. Kirillin, Ekaterina A. Sergeeva, N. Yu. Ignatieva, O. L. Zakharkina |
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Rok vydání: | 2020 |
Předmět: |
Materials science
business.industry Statistical and Nonlinear Physics Laser Nonlinear optical microscopy Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention symbols.namesake Fourier transform law symbols Optoelectronics Electrical and Electronic Engineering Laser heating business |
Zdroj: | Quantum Electronics. 50:76-80 |
ISSN: | 1468-4799 1063-7818 |
DOI: | 10.1070/qel17214 |
Popis: | Nonlinear optical microscopy is used to monitor changes in the collagen structure of patellar ligament after IR laser heating up to a temperature of 60 °C. Pre-denaturation modification of the tissue matrix exhibits specific properties and consists in splitting of initially parallel fibre bundles into array of divergent fibres. Image processing employing Fast Fourier transform analysis is used for characterising images of the fibre structure and determining the collagen orientation index. An increase in manifestation of laser-induced disordering with an increase in IR laser radiation power from 0.3 to 2 W is accompanied by a decrease in the collagen orientation index. The specific disorganisation of the collagen tissue structure during laser heating is supposed to be due to fast speed and local action of the laser heating, which leads to mechanical distortions of the structural elements of tissue matrix. |
Databáze: | OpenAIRE |
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