Pilot Study of Blood Perfusion Changes at PC4 and Its Surrounding Points Induced by Acupuncture and Moxibustion

Figure 1

Study design and blood flux recording points. (a) Stimulation flow diagram: participants rest for 40 min before recording the baseline value for 20 min. After acupuncture or moxibustion for 5 min, blood flux is recorded for 20 min. (b) Recording points of the right forearm: left image is a photograph of the recording site and right image is a blood flow diagram. S is PC4, which receives stimulation. Both point P (proximal side) and point D (distal side) are on the pericardium meridian. Point R is on the radial side of the pericardium meridian, while point U is on the ulnar side. Point S and the other four points are equidistant. (c) Raw blood flux signals of recording points. Pre, prestimulation; post, poststimulation.

(a)

(b)

(c)