Title :
Performance of liquid Xe PET detector with high quantum efficiency PMT
Author :
Nishikido, Fumihiko ; Kikuchi, Jun ; Doke, Tadayoshi ; Mori, Toshinori ; Murayama, Hideo ; Ooshita, Tatsurou ; Takahashi, Hidehiro
Abstract :
The liquid Xe as a scintillator has a very fast response. The scintillation light decays with 2.2 ns and 22 ns, and the recombination light for gamma rays decays with 45 ns. Also, the scintillation yield is very high, comparable to that of NaI(Tl) crystals. These properties are considered to be advantageous for application to time of flight-positron emission tomography (TOF-PET). From this perspective, a prototype for a TOF-PET system which consists of two identical liquid xenon detectors has been constructed with new PMTs developed recently with Hamamatsu Photonics and its energy resolution, position resolution and the time resolution were measured. The energy resolutions of 17.9% and position resolutions of 2.1 mm to 3.5 mm were obtained for the detector, respectively, and a time resolution of 260 ps between the two detectors was obtained for 511 keV gamma rays from positron annihilation
Keywords :
gamma-ray detection; liquid scintillation detectors; photomultipliers; positron emission tomography; 2.2 ns; 22 ns; 45 ns; Hamamatsu Photonics; TOF-PET; energy resolution; gamma rays; high quantum efficiency PMT; liquid Xe PET detector; liquid xenon detectors; position resolution; positron annihilation; recombination light; scintillation light; scintillator; time of flight-positron emission tomography; time resolution; Energy resolution; Gamma ray detection; Gamma ray detectors; Gamma rays; Photonic crystals; Positron emission tomography; Prototypes; Radiative recombination; Solid scintillation detectors; Xenon;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2004 IEEE
Conference_Location :
Rome
Print_ISBN :
0-7803-8700-7
Electronic_ISBN :
1082-3654
DOI :
10.1109/NSSMIC.2004.1466297
