| Theoretical and experimental study of the intensity distribution in biological tissues |
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| 引用本文： | 许棠,张春平,陈桂英,田建国,张光寅,赵承梅. Theoretical and experimental study of the intensity distribution in biological tissues[J]. 中国物理, 2005, 14(9): 1813-1820 |
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| 作者姓名： | 许棠 张春平 陈桂英 田建国 张光寅 赵承梅 |
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| 作者单位： | Measurement Center, Zhanjiang Normal College, Zhanjiang 524048, China;Photonics Center, Institute of Physics, Nankai University,Tianjin 300071, China;Photonics Center, Institute of Physics, Nankai University,Tianjin 300071, China;Photonics Center, Institute of Physics, Nankai University,Tianjin 300071, China;Photonics Center, Institute of Physics, Nankai University,Tianjin 300071, China;Photonics Center, Institute of Physics, Nankai University,Tianjin 300071, China;Tianjin Medical College, Tianjin 300052, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No 60278007), the Natural Science Foundation of Tianjin (Grant No 033601311) and the Natural ScienceFoundation of Guangdong Province (Grant No 04011427). |
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| 摘 要： | Based on the diffusion approximate theory （DA）, a theoretical model about the distribution of the intensity of a narrow collimation beam illuminating on a semi-lnfinite biological tissue is developed. In order to verify the correctness of the model, a novel method of measuring the distributions of the intensity of light in Intralipid-10% suspension at 650 nm is presented and ts of the distributions of the distance-dependent intensity of scattering light in different directions are made. The investigations show that the results from our diffusion model are in good agreement with the experimental results beyond and in the areas around the light source, and the distance-dependent intensity in the incident direction attenuates approximately in the exponential form. Furthermore, our theoretic results indicate the anisotropic characteristics of the intensity in different directions of scattering light inside the biological tissue.
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| 关 键 词： | 生物组织 亮度分布 发散强度 扩散理论 |
| 文章编号： | 1009-1963/2005/14（09）/1813-08 |
| 收稿时间： | 2005-03-21 |
| 修稿时间： | 2005-03-212005-05-30 |
Theoretical and experimental study of the intensity distribution in biological tissues |
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| Xu Tang,Zhang Chun-Ping,Chen Gui-Ying,Tian Jian-Guo,Zhang Guang-Yin and Zhao Cheng-Mei. Theoretical and experimental study of the intensity distribution in biological tissues[J]. Chinese Physics, 2005, 14(9): 1813-1820 |
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| Authors: | Xu Tang Zhang Chun-Ping Chen Gui-Ying Tian Jian-Guo Zhang Guang-Yin Zhao Cheng-Mei |
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| Affiliation: | Measurement Center, Zhanjiang Normal College, Zhanjiang 524048, China;Photonics Center, Institute of Physics, Nankai University,Tianjin 300071, China; Photonics Center, Institute of Physics, Nankai University,Tianjin 300071, China; Tianjin Medical College, Tianjin 300052, China |
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| Abstract: | Based on the diffusion approximate theory (DA), a theoretical model about the distribution of the intensity of a narrow collimation beam illuminating on a semi-infinite biological tissue is developed. In order to verify the correctness of the model, a novel method of measuring the distributions of the intensity of light in Intralipid-10% suspension at 650 nm is presented and measurements of the distributions of the distance-dependent intensity of scattering light in different directions are made. The investigations show that the results from our diffusion model are in good agreement with the experimental results beyond and in the areas around the light source, and the distance-dependent intensity in the incident direction attenuates approximately in the exponential form. Furthermore, our theoretic results indicate the anisotropic characteristics of the intensity in different directions of scattering light inside the biological tissue. |
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| Keywords: | biological tissue light distribution radiationintensity |
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