目的 :了解中医灸的机理与各种灸的红外辐射光谱特性。方法 :采用锁相放大技术建立了一套灵敏的红外光谱测量装置。首先采用光采集器将穴位或灸发出的光聚集到斩波器上

斩波的信号经红外分光仪分光后照射到一台高灵敏度的红外传感器上

传感器获得的信号经前置放大后输入锁相放大器中

并与来自斩波器的参数信号一起进行锁相放大

这样只有与斩波器同频同相的信号才被放大 1 0万倍左右

其它信号均被过滤

锁相放大的输出信号达几十毫伏量级

送入示波器与计算机用于观察与记录。通过这种技术我们检测到人体不到 1cm2 面积的体表红外辐射光谱。结果 :通过对这些光谱的归一化处理后发现

不同人体和同一人体的不同穴位

尽管其红外辐射绝对光谱及强度相差很大

但归一化光谱都有相当的一致性与可比性。进一步将人体发射的平均归一化光谱与中医艾条灸、隔姜灸、隔蒜灸及隔附子饼灸点燃过程中的光谱比较发现

后面三种间隔灸与人体自发辐射的光谱有着惊人的一致性

辐射峰几乎和人体穴位辐射一样都在 7.5μm附近

而艾条灸等的光谱却相差甚远。结论 :中医间接灸所发射的光谱虽然强度较人体穴位高 2 0多倍

但它的归一化光谱却和人体非常相同。这是一种偶然的巧合

还是有其深刻的生物物理机理

目前还不完Objective: To study the characters of infrared radiation spectrum of acupoints and moxibustion in the human body. Methods: In 5 healthy volunteer subjects

characters of the infrared radiation spectrum of Neiguan (PC 6)

Laogong (PC 8) and Hegu (LI 4)

ginger separated moxibustion

garlic separated moxibustion and Fuzi (Radix Aconiti Praeparata) cake separated moxibustion (less than 1 cm 2 area on the body surface) were detected using lock phase amplification technology under strict control of the room temperature and humidity. Results: Although some obvious differences were found in the primitive spectrum and the intensity of infrared radiation among different human bodies and in different acupoints

there exist quite consistency and comparability after unified treatment of the spectrums. It was also found that comparison between the average unified spectrum emitted from the subject body and the spectrum of ginger separated moxibustion

garlic separated moxibustion and Fuzi (Radix Aconiti Praeparata) cake separated moxibustion showed an amazing consistency

with the radiation peak all being about 7.5 μm in spite of different temperature. Conclusion: The results provide the scientific basic data for the thermotherapy and infrared physiotherapy.