Zhang Zu-De, Guo Zhou-Yi, Wei Hua-Jiang, Liu Han-Ping, Zhong Hui-Qing, Yang Hong-Qin, Xie Shu-Sen
Key Laboratory of Laser Life Science and Institute of Laser Life Science, Ministry of Education, South China Normal University, Guangzhou 510631, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2009 Nov;29(11):2930-3.
Characteristics and differences of reflectance spectroscopy of human Laogong acupoint and non-acupoint tissues before and after irradiation by different power of laser were studied in the spectral range from 400 to 1 000 nm. A wavelength 808 nm semiconductor laser was used for irradiation at the power of 20, 50 and 100 mW for ten minutes. Reflectance spectra of human Laogong acupoint and non-acupoint tissues were measured by using an AvaSpec-2048 optical fiber spectroscopy with an integrating sphere attachment. The result shows that before irradiation the shape of the reflectance spectra of Laogong acupoint and non-acupoint is similar, they have the same troughs at 423, 544, 577 and 980 nm, and the reflectance for Laogong acupoint and non-acupoint at these wavelengths is 17.1%, 26.1%, 25.9% and 35.0%, and 17.1%, 27.6%, 28.1% and 36.5% respectively. But from 475 to 1 000 nm, the reflectance of Laogong acupoint is smaller than that of non-acupoint. After being irradiated by semiconductor laser at the power of 20, 50 and 100 mW, there is a very significant decrease in the reflectance of Laogong acupoint compared to that before irradiation, and the higher the power, the lower the reflectance. But there is just a small decrease in the reflectance for non-acupoint compared to that before irradiation. From the above results, it is clearly seen that Laogong acupoint is different from non-acupoint on reflectance spectroscopy, and Laogong acupoint is more sensitive to laser irradiation than non-acupoint tissue.
在400至1000nm光谱范围内，研究了不同功率激光照射前后人体劳宫穴与非穴位组织的反射光谱特征及差异。采用波长808nm的半导体激光器，分别以20、50和100mW的功率照射10分钟。使用配备积分球附件的AvaSpec - 2048光纤光谱仪测量人体劳宫穴与非穴位组织的反射光谱。结果表明，照射前劳宫穴与非穴位的反射光谱形状相似，在423、544、577和980nm处有相同的波谷，劳宫穴与非穴位在这些波长处的反射率分别为17.1%、26.1%、25.9%和35.0%，以及17.1%、27.6%、28.1%和36.5%。但在475至1000nm范围内，劳宫穴的反射率低于非穴位。在分别以20、50和100mW功率的半导体激光照射后，劳宫穴的反射率相比照射前有非常显著的下降，且功率越高，反射率越低。而非穴位的反射率相比照射前仅有小幅下降。从上述结果可以清楚地看出，劳宫穴与非穴位在反射光谱上存在差异，且劳宫穴对激光照射比非穴位组织更敏感。
