Figure 7: The first violet laser acupuncture using a wavelength of 405 nm. Note the significant increase in microcirculation (Flux1, F1; blue curve) 1 mm beside the violet laser needle at the acupoint Hegu (LI.4). Temperature at this location (T1, same as F1) was measured using thermal infrared imaging (Flir i5). Note also the increase of temperature from 33.9°C to 36.6°C in the region of interest in this volunteer. Flux2 (F2) and temperature2 (T2, location same as F2) were recorded at the index finger (modified from [12]).