Use of the concept of "specific power density" for parametrization of low-level laser irradiation

Alexandre Yu. Douplik

doi:10.1117/12.169103

15 February 1994 Use of the concept of "specific power density" for parametrization of low-level laser irradiation

Alexandre Yu. Douplik

Proceedings Volume 2086, Medical Applications of Lasers; (1994) https://doi.org/10.1117/12.169103
Event: Europto Biomedical Optics '93, 1993, Budapest, Hungary

Abstract

The article analyzes a traditional idea on the description of Low Level Laser Irradiation (LLLI) resulting from some isolation (gap) of clinic-biological and optic studies in the sphere of Low Level Laser Medicine. The author uses a conventional parameter `Specific Power Density,' Ps (mW/cm³) connected with both power characteristics of laser and optical properties of irradiated biological subject. The attenuation of the LLLI in biotissue is described with a gradient P(x), where x is a distance to the source. If the distributed intensity of LLLI is integrated over the volume V so one can obtain integral intensity SP(mW). Let us divide integral intensity by the volume: SP/V. This very ratio is Specific Power Density P (mW/cm³). The calculation of energetic LLLI parameters of whole blood intravenously is submitted as an example of use of the Specific Power Density.

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Alexandre Yu. Douplik "Use of the concept of "specific power density" for parametrization of low-level laser irradiation", Proc. SPIE 2086, Medical Applications of Lasers, (15 February 1994); https://doi.org/10.1117/12.169103

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KEYWORDS

Blood

Optical properties

Tissue optics

Picosecond phenomena

Scattering

Laser irradiation

Laser scattering

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