Infrared thermography fails to visualize stimulation-induced meridian-like structures.
BACKGROUND
According to Traditional Chinese Medicine (TCM) the vital energy flows through a system of channels also called meridians. Generally accepted proof for meridians cannot be considered as being given. Goal of this study was to examine whether possible stimulation-induced meridian-like structures, as recently described by other authors, can be visualized and objectified simultaneously at different infrared wavelength ranges.


METHODS
The study analyses evidence for the existence of acupuncture-specific, meridian-like artifacts in 6 healthy volunteers (mean age +/- SD 28.7 +/- 3.7 years; range 25 - 35 years). Two infrared cameras at different wavelength ranges were used for thermographic control of possible stimulation effects (moxibustion-cigar, infrared warmth stimulation, needle and laserneedle stimulation). In addition to thermography, temperature and microcirculatory parameters were registered at a selected point using laser-Doppler flowmetry.


CONCLUSIONS
After moxibustion (or infrared light stimulation) of the body at 2 - 5 microm and 7.5 - 13 microm ranges, different structures appear on thermographic images of the human body which are technical artifacts and which are not identical to what are known as meridians in all textbooks of TCM. Further scientific studies are required regarding the possible visualization of meridians.
Litscher
Gerhard
G
Biomedical Engineering and Research in Anesthesia and Intensive Care Medicine, Medical University of Graz, Austria. gerhard.litscher@meduni-graz.at
D015669:Acupuncture Points; D015670:Acupuncture Therapy / Q000379:methods*; D000328:Adult; D005260:Female; D006358:Hot Temperature; D006801:Humans; D008297:Male; D010812:Physical Stimulation / Q000379:methods*; D012881:Skin Temperature / Q000502:physiology*; D013055:Spectrophotometry, Infrared / Q000379:methods*; D013817:Thermography / Q000379:methods*