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5. Thermal effect
The thermal action of lasers is now the predominant mechanism of therapeutic laser applications. The thermal effect encompasses a broad group of interaction types characterized by a significant temperature change within the tissue illuminated by the laser. Thermal effects can be achieved with both continuous and pulsed lasers. The thermal effect of lasers is a complex process comprising three phenomena: conversion of laser light into heat, heat transfer to the tissue and a temperature-dependent tissue reaction. Depending on the duration of heating and the temperature rise in the tissue, one of the following effects can be obtained: hyperthermia, coagulation, or volatilization of a given tissue volume (table 1 ).
There are a huge number of clinical applications, and it is beyond the scope of this article...
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Thermal effect
Photochemical or photodynamic effect
Bibliography
Websites
Société Francophone des Lasers Médicaux http://www.sflm.org
American Society for Laser Medicine & Surgery, Inc.
Laser Group of the French Society of Dermatology
European Laser Association
International Photodynamic Association
European...
Events
ASLMS Annual Meeting, USA
SFLM Annual Congress, France
Risks and prevention :
Regulations
Medical lasers are approved in accordance with MDD 93-42. http://www.ec.europa.eu/enterprise/policies/european-standards/harmonised-standards/medical-devices/index_en.htm
In France
Statistical and economic data
Each year, Laser Focus World magazine publishes a study on the laser market, and the medical laser market in particular (table 1 and figure
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