Title :
Proposal of a threshold type Cherenkov PET detector without pulse height measurements
Author :
Kawai, H. ; Mitsuhashi, T. ; Nakayama, H. ; Ojima, S. ; Saito, Y. ; Suzuki, A. ; Tabata, M. ; Tomioka, K.
Author_Institution :
Fac. of Sci., Chiba Univ., Chiba, Japan
fDate :
Oct. 24 2009-Nov. 1 2009
Abstract :
We have developed the new production methods of silica aerogel with the refractive indices between 1.15 and 1.25. Since the velocity of the photoelectric electron from the 511keV photon is 0.866c and the maximum velocity of the Compton electron is 0.8c, only photoelectric electrons occurs the Cherenkov light inside the radiator with n ~ 1.2. We are constructing the simple prototype PET detectors using these silica aerogels. Since there are no efficiency for the Compton events, the pulse height measurements are not need. The data acquisition system becomes very simple.
Keywords :
Cherenkov counters; Compton effect; aerogels; positron emission tomography; pulse height analysers; refractive index; Cherenkov light; Compton electron; Compton events; data acquisition system; electron volt energy 511 keV; photoelectric electron; pulse height measurement; refractive index; silica aerogel; threshold type Cherenkov PET detector; Data acquisition; Detectors; Electrons; Optical refraction; Positron emission tomography; Production; Proposals; Prototypes; Pulse measurements; Silicon compounds;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2009.5401905
