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

Volume

5

fYear

2004

fDate

16-22 Oct. 2004

Firstpage

2919

Lastpage

2922

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2004 IEEE

Conference_Location

Rome

ISSN

1082-3654

Print_ISBN

0-7803-8700-7

Electronic_ISBN

1082-3654

Type

conf

DOI

10.1109/NSSMIC.2004.1466297

Filename

1466297