Title :
Basic experiments on radiation imaging by using Pr:Lu3Al5O12 (LuAG) small crystalline pixels with various reflector
Author :
Kamada, Kei ; Tsutsumi, Kousuke ; Suzuki, Chisato ; Usuki, Yoshiyuki ; Yanagida, Takeyuki ; Yoshikawa, Akira ; Yamamoto, Seiichi ; Saito, Fumio
Author_Institution :
Furukawa Co. Ltd., Tsukuba
fDate :
Oct. 26 2007-Nov. 3 2007
Abstract :
Pr:LuAG have good scintillation properties of high energy resolution, very fast 5d-4f emission decay time, higher density and high light yield. In order to apply Pr:LuAG to medical imaging application such PET and PEM, the optimization of light output and energy resolution of scintillators is very important. Especially Therefore, to choose a suited reflector is very important because Pr:LuAG has short emission wave length at 310 nm. In this work, we studied spatial and energy resolution of pixilated Pr:LuAG with various reflectors (Teflon tape, ESR, BaSO4) by irradiation of 22Na source. Using the BaSO4 reflector, the light output has increased by ~210% compared to the ESR reflector, and ~170% compared to the Teflon tape reflector. The BaSO4 reflector also resulted in the best improvement of the energy resolution up to 12%.
Keywords :
biomedical imaging; gamma-ray detection; lutetium compounds; mammography; position sensitive particle detectors; positron emission tomography; praseodymium; scintillation; solid scintillation detectors; 5d-4f emission decay time; 22Na source; BaSO4 reflector; ESR reflector; Lu3Al5O12:Pr; PEM; PET; crystalline pixels; energy resolution; gamma detection; irradiation effects; light yield; medical imaging; positron emission mammography; radiation imaging; scintillation properties; spatial resolution; teflon tape reflector; Radiation imaging;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0922-8
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2007.4437265
