Abstract
We have developed a new generation of PET, i.e., 3D-PET(the three-dimensional Positron Emission Tomography), which is characterized by "high sensitivity"and "high resolution". A major advantage is reduction of irradiation exposure to less than one tenth compared to previous one. As a result, it became possible to pick up regions of significant change in blood flow in a single subject by repeating 8 to 10 scans at different conditions. We applied this technique a Qigong practitioner who showed marked increases in α and β EEG waves and reduced δ waves in practicing Qigong.Changes in β waves were correlated with rCBF change in the frontal and posterior lobes. 3D-PET was also applied to the subliminal perception. Activated areas such as the frontal and posterior regions, which were visualized based on the rCBF changes, had positive and negative relationship to the length of exposure time of visual stimuli, respectively.
