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SPECTRAL DOSIMETRY IN LOW LIGHT THERAPY

机译:弱光治疗中的光谱剂量学

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摘要

Spectral study of light dosimetry for clinical LLT based on a simplified one-dimensional model of a two-layered medium analyzed within the limits of Kubelka-Munk approximation is presented. The relationship between the surface irradiance and the fluence rate seeing by a target at a given depth in tissues is studied for various irradiating wavelengths. The behavior of the fluence rate is also examined as a function of a blood volume fraction in tissues. Strong dependence of the fluence rate in skin on irradiating wavelengths has found in visible spectrum from about 600nm to about 800nm. In contrast, the fluence rate does not change much over the near infrared region from 800nm t0 1,300nm. Spectral dosimetry in blood content muscles exhibits progressive increase of the fluence rate over visible and near infrared ranges. It has shown that blood perfusion of tissues differently affects the fluence rate at various wavelengths. The discussed model allows estimation of the surface irradiance required to provide the therapeutic value of the fluence rate at a target.
机译:提出了基于在Kubelka-Munk近似范围内分析的两层介质的简化一维模型对临床LLT进行光剂量测定的光谱研究。对于各种辐射波长,研究了目标在组织中给定深度处的表面辐照度与注量率之间的关系。还检查了注量率的行为与组织中血液体积分数的关系。在约600nm至约800nm的可见光谱中发现皮肤的通量率对照射波长的强烈依赖性。相反,从800nm到1,300nm,在近红外区域的注量率变化不大。在可见光和近红外范围内,血液中肌肉的光谱剂量法显示注量速率的逐渐增加。已经表明,血液在不同波长下对组织的灌注会影响注量率。讨论的模型允许估算提供目标注量速率的治疗值所需的表面辐照度。

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