Author :
Kabuki, S. ; Hattori, K. ; Kurosawa, Shunsuke ; Miuchi, K. ; Nagayoshi, T. ; Nishimura, Hideki ; Okada, Yoshitaka ; Sekiya, Hiroo ; Takada, Akifumi ; Tanimori, T. ; Ueno, K. ; Kawashima, Hitoshi ; Kimura, Hiromitsu ; Saji, Hitoshi ; Ueda, Makoto ; Kohara,
Abstract :
A conventional Compton camera reconstructs initial gamma-rays direction as circle. A Compton gamma-ray camera which we have developed can detect electron tracks. So our camera can reconstruct the initial gamma-rays as arc. It makes getting the low noise of image. In this paper, we report the results of three version of electron tracking camera. One is 10 x 10 x 10 cm3 Time Projection Chamber (TPC) as a scatter detector and 15 x 15 cm2 GSO pixel scintillator array (PSA) as an absorber. Second is a 10 x 10 x 10 cm3 TPC and a 10 x 10 cm2 LaBr3 PSA. The energy resolution of LaBr3 scintillator is about 2 times better than GSO scintillator. Third is a 30 x 30 x 15 cm3 TPC and a 30 x 30 cm2 GSO pixel PSA. The efficiency of this system is better than 10 cm3 cube Compton gammra-ray camera.
Keywords :
Compton effect; cameras; electron detection; gamma-ray apparatus; phantoms; radioisotope imaging; solid scintillation detectors; Compton gamma-ray camera; GSO pixel scintillator array; electron tracking camera; image noise; phantom; scatter detector; time projection chamber; Animals; Cameras; Electrons; Energy resolution; Gamma ray detection; Gamma ray detectors; Image reconstruction; Imaging phantoms; Scattering; Sensor arrays;
