An improved multicrystal 2-D BGO detector for PET

Author

Rogers, J.G. ; Taylor, A.J. ; Rahimi, M.F. ; Nutt, R. ; Andreaco, M. ; Williams, C.W.

Author_Institution

TRIUMF, Vancouver, BC, Canada

Volume

39

Issue

4

fYear

1992

fDate

8/1/1992 12:00:00 AM

Firstpage

1063

Lastpage

1068

Abstract

The authors evaluate and compare two 2-D array detectors for positron emission tomography (PET). Both consisted of an 8×8 array of small BGO crystals coupled to a 2×2 array of photomultiplier tubes. The depth of the crystals was 3 cm in one detector and 2 cm in the other. The 2-cm detector is superior in terms of material costs, in energy resolution per crystal, and in its ability to clearly identify the crystal containing the primary interaction. A flexible and robust algorithm is presented for crystal identification in such array detectors. The prospect of obtaining still better spatial resolution from such block detectors, with increased numbers of crystals, is discussed

Keywords

beryllium compounds; biomedical equipment; computerised tomography; electron detection and measurement; radioisotope scanning and imaging; scintillation counters; BGO crystals; Be₄Ge₃O₁₂; PET; array detectors; crystal identification; photomultiplier tubes; positron emission tomography; spatial resolution; Costs; Crystalline materials; Crystals; Detectors; Energy resolution; Photomultipliers; Positron emission tomography; Robustness; Sensor arrays; Spatial resolution;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.159760

Filename

159760