摘要
在均一生物组织模型下,研究近红外光谱测量系统的探测深度。根据漫射近似理论模拟生物组织中不同位置的吸收体对探测信号衰减量的分布,由数据处理计算出光子在其中的最大穿透深度约为15mm;基于Lambert-Beer定律,利用近红外光谱系统探测模型实验中光强信号的变化,得到该系统的最大探测深度约为14mm。比较模型实验与理论模拟的结果,表明近红外光谱测量系统可以探测均一生物组织中的最大探测深度约为14mm。
Base on the model of homogeneous biological tissue, the detecting depth of the near - infrared spectroscopy （NIRS） is studied. Firstly the attenuation distribution of the detecting biology signal in the tissue according to the diffusion approximate theory is simulated and the largest depth which the photon can penetrate that is 15ram by dealing with the data is got basing on the theory of Lambert - Beer, the changing signal of light intensity in the modeling experiment is detected by the NIRS. As a result, the detecting depth of the system is 14mm. On the other hand, comparing the experiment and theory, it showes that NIRS using continuous wave can be used to detect the signal of the deep position is approximate 14mm in the homogeneous biological tissue.
出处
《生物医学工程研究》
2006年第1期32-34,38,共4页
Journal Of Biomedical Engineering Research
基金
国家自然科学基金资助课题(60478016
60440420131)
关键词
近红外光谱术
均一生物组织
探测深度
模型实验
漫射近似
Near infrared spectroscopy （NIRS）
Homogeneous biological tissue
Detecting depth
Diffusion approximate
Depth experiment
