Improving DOI information using 3-layer crystals for small animal PETs

Author

Hong, S.J. ; Lee, J.S. ; Sim, K.S. ; Kim, S.M. ; Moon, D.H. ; Hong, B. ; Lee, K.S. ; Park, J.W. ; Park, S. ; Lee, M.C. ; Choe, J.G. ; Rhee, J.T.

Author_Institution

Detector Lab., Korea Univ., Seoul, South Korea

Volume

4

fYear

2004

fDate

16-22 Oct. 2004

Firstpage

2434

Abstract

Improving the spatial resolution without sacrificing the sensitivity is one of the most challenging goals for small animal PETs. The 3-layer configuration that we propose consists of 7 mm long LuYAP and 7 mm long LSO crystals aligned with each other, and 5 mm long LSO crystals with an offset of 1.15 mm. The LuYAP crystals are attached to Hamamatsu H7546B multi-anode PMTs, and the sensitive cells of which are aligned to match the 5 mm long LSO crystals. To estimate the improvement of the spatial resolution, we also simulated the 2-layer configuration of LSO and LuYAP, each with a 9.5 mm length. The Monte-Carlo simulation shows that the 3-layer configuration has a potential to improve the spatial resolution by about 30-40% at 40.0 mm from the central axis over the 2-layer configuration. To study the 3-layer configuration, we started to test the 2-layer and 3-layer configurations and presented preliminary test results.

Keywords

Monte Carlo methods; photomultipliers; positron emission tomography; solid scintillation detectors; 2-layer configuration; 3-layer crystals; 5 mm; 7 mm; 9.5 mm; DOI information; Hamamatsu H7546B multianode PMT; Lu₂SiO₅; LuYAlO₃:Ce; Monte-Carlo simulation; long LSO crystals; long LuYAP crystals; sensitive cells; small animal PET; spatial resolution; Animals; Crystals; Detectors; Energy resolution; Nuclear medicine; Positron emission tomography; Spatial resolution; Telephony; Testing; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2004 IEEE

ISSN

1082-3654

Print_ISBN

0-7803-8700-7

Type

conf

DOI

10.1109/NSSMIC.2004.1462748

Filename

1462748