| 近红外光子在生物组织中迁移的仿真及应用 |
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| 引用本文： | 丁海曙,王峰,苏畅,林方.近红外光子在生物组织中迁移的仿真及应用[J].清华大学学报(自然科学版),1999,39(9). |
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| 作者姓名： | 丁海曙 王峰 苏畅 林方 |
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| 作者单位： | 清华大学,电机工程与应用电子技术系,北京,100084 |
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| 摘 要： | 通过对光与生物组织相互作用物理本质的分析，介绍了一种求解光子在生物组织中迁移规律的蒙特卡罗计算方法。方法假定入射光为离散的光子，并受到生物组织的吸收和散射。认为光子在两次散射之间的长步和散射方向虽然是随机的，但可引入随机变量予以确定。对大量光子进行计算就可以获得光在生物组织中传播的宏观数据。将此方法用于脂肪组织，所得结果与实验符合甚好。说明此方法可用于检测人体皮下脂肪层的厚度，并对合理设计红外无损检测的传感器可提供依据
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| 关 键 词： | 近红外光谱 光子迁移 Monte Carlo方法 光子生物学 |
Simulation and application for near infra-red light transport in biological tissues |
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| DING Haishu,WANG Feng,SU Chang,LIN Fang.Simulation and application for near infra-red light transport in biological tissues[J].Journal of Tsinghua University(Science and Technology),1999,39(9). |
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| Authors: | DING Haishu WANG Feng SU Chang LIN Fang |
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| Institution: | DING Haishu, WANG Feng, SU Chang,
LIN Fang;
Department of Electrical Engineering, Tsinghua University, Beijing 100084, China;x=x |
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| Abstract: | The Monte Carlo method for simulating photon migration in biological tissue was introduced by means of analysis of interaction between light and biological tissue. This method consists of recording photons histories as they are scattered and absorbed. Although the propagation distance and photon direction after scattering event are random value, repeatedly calculation on millions photons can model light transport in tissue. The Monte Carlo method, the most exact solution for light transport in tissue, was studied for modeling photon random migration in single layered and multi layered tissue. The simulation result is in good agreement with experimental data on adipose tissue. The methods could be used in the study of light tissue interaction, the design of biomedical optical measuring systems such as tissue adipose meter, and provide theoretical predication in the design of near infrared optic sensor. |
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