Three-Dimensional PET: An Approach in Psychology

Author: Manabu Tashiro 1//Zhan Xiang Xu 2//Okumura Nobuyuki 1//Ishiyuki Hiroyuki 1//Miyazaki Hiroshi 3//Ishii Keizo 4//Itoh Masatoshi 1
Div. of Nuclear Medicine, Cyclotron Radioisotope Center, Tohoku Univ., Sendai, Japan [1]//Dept. of Medicine and Science in Sports and Exercise, School of Medicine, Tohoku Univ., Sendai, Japan [2]//Laboratory of Neuroinfomation Science, Tohoku-Gakuin Univ., Sendai, Japan [3]//Div. of Nuclear Engineering, Faculty of Engineering, Tohoku Univ., Sendai, Japan [4]
Conference/Journal: J Intl Soc Life Info Science
Date published: 1996
Other: Volume ID: 14 , Issue ID: 2 , Pages: 282-284 , Special Notes: Also in Japanese. Proceedings of First Symposium of Life Information Science, without peer review. , Word Count: 150

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 in a Qigong
practitioner who showed marked increases in alpha and beta EEG waves
and reduced delta waves in practicing Qigong. Changes in beta 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.