Abstract
This study aims to simulate a therapeutic plan for a normal human blood model under various patho-physiological conditions, such as the development of leukemia/blood diseases, by means of Monte Carlo multilayered simulation. The photosensitizing compound selectively accumulates in the target cells. A superficial treatment of a blood sample was performed at different ratios of oxygen saturation (f(oxy) = 50%, 53%, 55%, 60%, 65%, and70%) under the concentration (C-MC540 = 30 mu M) effect of merocyanine 540 (MC540) in the blood irradiation. This was done under the application of visible light of wavelength similar to 580nm at an exposure time similar to 60 s. The dose of photodynamic therapy (PDT) was evaluated for the biological damage, leading to necrosis and blood damage during the treatment. In addition, the effect of PDT treatment response in the blood is related to hemoglobin oxygen saturation, resulting in an excellent relationship between the changes caused by the treatment in the blood at a peculiar oxygen saturation rate (for the highest response: f(oxy) = 50%) and a light dose (LD) of 3.83 Jcm(-2) above the minimal toxicity of normal tissues. The photodynamic dose is related to the depth of necrosis and the time of treatment for the achievement of the LD delivery at the PDT of blood.