首页> 外文会议>Mechanisms for Low-Light Therapy; Progress in Biomedical Optics and Imaging; vol.7 no.26 >Transmission of phototherapy through human skin: dosimetry adjustment for effects of skin color, body composition, wavelength and light coupling to skin
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Transmission of phototherapy through human skin: dosimetry adjustment for effects of skin color, body composition, wavelength and light coupling to skin

机译:光疗通过人体皮肤的传输:剂量学调整,以调节皮肤的颜色,身体成分,波长和与皮肤耦合的光

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Purpose: To examine factors that affect penetration of phototherapy. Methods: Age, sex, height, and weight were recorded; skin color, skinfold thickness, and light transmission through a skinfold were measured over biceps and triceps muscles, and at the anterior waistline. Light was generated using two 23-diode LED arrays at 840 nm and 660 nm with surface area of 7 cm~2. Photon irradiation was measured using an Optical Power Meter consisting of a 1x1-cm~2 light detector placed in the centre of the illuminated 7 cm~2 spot. Transmission was measured using three skin-diode coupling conditions. Results: Penetration of LED irradiation increased when diodes were coupled to skin with pressure. Red light attenuated more rapidly than infrared light and the attenuation of red light increased as skin color darkened. Penetration of red and infrared light decreased as the amount of subcutaneous fat increased. There were gender effects on penetration of infrared light at normal and low BMI values. Conclusions: When using divergent light sources for phototherapy, radiant exposure should take into account individual physical characteristics, irradiation wavelength and diode configuration of the laser therapy system.
机译:目的:研究影响光疗渗透的因素。方法:记录年龄,性别,身高和体重。在二头肌和肱三头肌上以及前腰围测量肤色,皮褶厚度和通过皮褶的透光率。使用两个23二极管LED阵列在840 nm和660 nm处产生光,表面积为7 cm〜2。使用光功率计测量光子的辐射,该光功率计包括一个1x1-cm〜2的光检测器,该光检测器位于7 cm〜2的光斑中心。使用三种皮肤二极管耦合条件测量透射率。结果:当二极管在压力下耦合到皮肤时,LED辐射的穿透性增加。红光的衰减比红外光更快,并且红光的衰减随着肤色变深而增加。随着皮下脂肪量的增加,红光和红外光的渗透率降低。在正常BMI值和低BMI值下,性别都会对红外光的穿透产生影响。结论:当使用发散光源进行光疗时,辐射暴露应考虑激光治疗系统的个体物理特征,照射波长和二极管配置。

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