Infrared spectrum analysis of Taichong (LR3) and Taixi (KI3) points before and after menstruation in healthy women

To investigate the variations in infrared radiation at Taichong (LR3), Taixi (KI3), and control points before and after menstruation and to examine the infrared radiation patterns associated with Yuan-primordial points of Zang-Fu organs during the physiological menstrual cycle.

Using a point infrared radiation spectrum detection system, we detected the infrared radiation spectra of Taichong (LR3), Taixi (KI3), and the control points located 1 cm away from the two points, in a range of 1.50`-18.00 µm wavelengths during the premenstrual, menstrual, and postmenstrual phases in 32 healthy adult women. Subsequently, data mining and analysis were conducted.

Before, during, and after menstruation, the infrared spectral shapes of bilateral Taichong (LR3), Taixi (KI3), and their control points were generally consistent, with characteristic infrared spectral wavelengths located at 11.25 µm. Prior to menstruation, the total intensity of infrared radiation at the right Taixi (KI3) was significantly lower than that at the control point (P<0.05), and that at the left Taichong (LR3) was significantly lower than that at the control point (P<0.01). During and after menstruation, the total infrared radiation intensity at both Taixi (KI3) was significantly lower than that of the control point (P<0.05). The wavelength points exhibiting significant differences in the infrared radiation intensity between points and control points were concentrated at the primary peak of 7.50–14.25 µm and the secondary peak of 15.00–17.25 µm.

During different menstrual phases, the infrared radiation spectra of Taichong (LR3) and Taixi (KI3) exhibited distinct point specificity, mainly evident in the infrared radiation intensity and wavelength.