Laser Physics Elements to Consider for low Level Laser Therapy

Abstract

A brief review is made about the properties of the laser radiation, with particular emphasis on their importance in low level laser therapy. An important part of this section is dedicated to the properties of the laser beams emitted by the semiconductor lasers (laser diodes or diode lasers) given the broad use of such lasers in low level laser therapy. The basic elements about the laser beam interaction with the tissues are introduced in close connection with the penetration depths of the laser beams into the target tissues. A general scheme of a medical laser equipment is introduced, according to the author´s experience, insisting on the requirements which result from the need to deliver to the medical doctors friendly, easy to use laser medical equipment. The simple formula used to compute the doses for tissue exposure at laser radiation with specific comments dedicated to the low level laser therapy applications are introduced. Lasers and laser medical products classes are introduced in connection with the laser safety rules to be considered while using the products for therapy applications. The practical rules recommended for the safe use of medical laser equipment are specified based on the author´s experience and recommendations for room arrangement and instrument selection in medical praxis related to the laser medical applications are given. The laser safety practical rules for the patients and the medical personnel are specified in direct connection with the current laser medical applications. © 2000, International Phototherapy Association. All rights reserved.