|Laser therapy | Photo: Jeff Keyzer|
involves the use of pure and concentrated light to affect the body's tissues and functions.
The word laser is the combined initial letters of Light Amplification by Stimulated Emission of Radiation, which roughly means light amplification by stimulated emission of radiation. A laser device emits a beam of pure single colored light (electromagnetic waves), where light waves have the same frequency and wavelength and propagates almost parallel. Light from a laser can be emitted as a narrow concentrated beam, which can be either continuous or pulsed.
The laser has been developed during the 1900s, and in 1960 produced the first laser for medical use. Living cells respond differently to different kinds of light, and the laser is used today in different ways in medical contexts: - Cutting lasers at 10-100 watts used as a scalpel, and to destroy the tissues (to be used by doctors and dentists with specialist skills).
- Burning, fading lasers at 10-10 watts with which such moles can be burned away.
- Biostimulative lasers at 1-10 milliwatts is used by eg therapists for the treatment of acne and scars and by physiotherapists for sports injuries, etc.
All laser equipment must be approved by the National Testing and equipped with the warning label and typgodkänningsnummer. All lasers, but the weakest of the biostimulative, must also be approved by the National Radiation Protection Institute (SSI).
There are different laser types, depending on which or the substances contained in the device and which determines the wavelength of the laser may be. The commonly used by such skin and physiotherapists are HeNe laser (helium-neon, continuous red light) and GEAS laser (gallium-arsenide, pulsed invisible light).
The laser light is a form of electromagnetic radiation. Part of the radiation that penetrates the body tissues are converted into other energy forms, such as thermal (heat), chemical, mechanical or kinetic (motion) energy. The largest part is absorbed as heat, which can be converted into motion. The transfer of the electromagnetic waves of radiation can trigger different processes in the body to stimulate healing of various disorders in the body's tissues.
The biostimulative laser - the question of alternative contexts - reportedly including following effects on the body:
- Increased blood supply,
- Accelerated healing and reduced scarring,
- Increased metabolism in the cells by increased permeability,
- Joint and muscle pain countered,
- Immune system is stimulated.
Lasers are also used as a form of acupuncture
treatment. When certain parts of the body suffers from a serious shortage of energy in the more difficult problem, is sometimes not sufficient by itself to nålakupunktur. Then, instead of the body to be foreign energy to get energy to repair itself. Electromagnetic radiation, as in the laser, is a form of energy that the body can absorb. Commonly used HeNe laser on acupuncture
points to bring them energy.