Calculation of specific power density of blood for intravenous low-level laser therapy

Authors use a conventional parameter `Specific Power Density', Ps (mW/cm3) connected with both power characteristics of laser and optical properties of irradiated blood. This value is normalized intensity of laser emission in the irradiated blood volume. The suggested value of the `Specific Power Density' creates more reproductive and physically more correct understanding of parametrization of Intra-Venous Low Level Laser Therapy of blood.