Validation of CW-light penetration based on fat layer variation in human skin model using Monte Carlo method

A. A. A. Halim, M. H. Laili, M. Rusop
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Abstract

Light propagation inside the tissue multilayers has been an issue because of the variation of thickness subcutaneous fat layer. Monte Carlo simulation was studied since it is as gold standard and consists in computational simulation of that chain and in constructing statistical estimates of the desired functional. Four layers of 3-D was quantitatively investigated the relationship between variation thickness of subcutaneous fat layer and measurement of muscle oxygenation using near infrared spectroscopy. The scattering coefficient, absorption coefficient, refractive index and anisotropy factor of each layer were found in the literature. All parameters could be estimated with having different of absorbance less than (2 a.u) for fat thickness 1 mm and 2 mm of human skin in the visible part of the spectrum at 600nm and 900nm. Thus, this result may help us to prove that our human muscle is transparent to this visible and especially near infrared region and might be useful tool for muscle activation studies in the future.Light propagation inside the tissue multilayers has been an issue because of the variation of thickness subcutaneous fat layer. Monte Carlo simulation was studied since it is as gold standard and consists in computational simulation of that chain and in constructing statistical estimates of the desired functional. Four layers of 3-D was quantitatively investigated the relationship between variation thickness of subcutaneous fat layer and measurement of muscle oxygenation using near infrared spectroscopy. The scattering coefficient, absorption coefficient, refractive index and anisotropy factor of each layer were found in the literature. All parameters could be estimated with having different of absorbance less than (2 a.u) for fat thickness 1 mm and 2 mm of human skin in the visible part of the spectrum at 600nm and 900nm. Thus, this result may help us to prove that our human muscle is transparent to this visible and especially near infrared region and might be useful tool for muscle activation studies in...
蒙特卡罗方法验证基于脂肪层变化的人体皮肤模型w -光穿透
由于皮下脂肪层厚度的变化,光在组织多层内的传播一直是一个问题。蒙特卡罗模拟之所以被研究,是因为它被视为金标准,包括对该链的计算模拟和对所需泛函的构造统计估计。采用近红外光谱定量研究了四层三维皮下脂肪层厚度变化与肌肉氧合测量的关系。在文献中得到了各层的散射系数、吸收系数、折射率和各向异性系数。在600nm和900nm光谱可见部分,人体皮肤脂肪厚度为1 mm和2 mm的吸光度差异小于(2 a.u),可以估计出所有参数。因此,这一结果可能有助于我们证明我们的人类肌肉对可见光特别是近红外区域是透明的,并且可能是未来肌肉激活研究的有用工具。由于皮下脂肪层厚度的变化,光在组织多层内的传播一直是一个问题。蒙特卡罗模拟之所以被研究,是因为它被视为金标准,包括对该链的计算模拟和对所需泛函的构造统计估计。采用近红外光谱定量研究了四层三维皮下脂肪层厚度变化与肌肉氧合测量的关系。在文献中得到了各层的散射系数、吸收系数、折射率和各向异性系数。在600nm和900nm光谱可见部分,人体皮肤脂肪厚度为1 mm和2 mm的吸光度差异小于(2 a.u),可以估计出所有参数。因此,这一结果可能有助于我们证明我们的人体肌肉对可见区域,特别是近红外区域是透明的,并且可能是用于肌肉激活研究的有用工具。
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