近红外激光照射人体合谷穴与非穴位区的温度和背向散射光强度的时间相关性比较研究

研究了人体合谷穴以及周边的非穴位组织受不同功率的半导体激光(808 nm功率分别为15，25，35 mW)照射前后，穴位和非穴位组织的温度和在不同深度处的背向散射光强度的时间相关性及其差异。实验采用红外热成像和光相干层析成像技术获取人体穴位区和非穴位区的温度及其背向散射光强度。结果表明，在808 nm激光照射前，穴位区和非穴位区的温度和背向散射光强是基本相同，照射后，穴位区的温度和背向散射光强明显地高于非穴位区的温度。在照射后的0～40 min内，穴位区和非穴位区的温度和背向散射光强都随着时间的增加而波动地缓慢下降。实验结果表明，合谷穴的穴位区与非穴位区对近红外激光照射前后的温度与时间的相关性和不同深度处的背向散射光强度的时间相关性有明显的差异，且穴位区对半导体激光器的照射反应比非穴位区更敏感。

Comparative Study of Time-Correlated Temperature and Back-Scattered Light Intensity for Human Hegu Acupoint and Non-Acupoint Tissue Irradiated by Near-Infrared Laser

Characteristics and differences of temperature and back-scattered light intensity in different depths of 0.2,0.4,0.6,0.8 and 1 mm for both human Hegu acupoint and non-acupoint tissue irradiated by 808 nm diode laser at the different power of 15,25 and 35 mW were studied.The temperature and the back-scattered light intensity in different depths of 0.2,0.4,0.6,0.8 and 1 mm for human Hegu acupoint and non-acupoint tissue were measured by using the infrared thermography and optical coherence tomography.The result shows few differences in the temperature and the back-scattered light intensity of human Hegu acupoint and non-acupoint tissue before irradiation.The temperature and back-scattered light intensity of Hegu acupoint and the non-acupoint after irradiation were significantly higher,and the temperature and back-scattered light intensity of Hegu acupoint significantly were higher than the non-acupoint areas.At 0～40 min after the irradiation,the temperature and back-scattered light intensity of Hegu acupoint and the non-acupoint area will fluctuate and gradually decrease with the passage of time.From the results above,it is clearly seen that Hegu acupoint is different from non-acupoint both in the back-scattered light intensity and temperature after irradiation,and Hegu acupoint is more sensitive to laser irradiation than non-acupoint tissue.