Detector characterization of Discovery ST whole-body PET scanner

Author

Williams, John J. ; McDaniel, David L. ; Kim, Chang L. ; West, Larissa J.

Author_Institution

Gen. Electr. Med. Syst., Waukesha, WI, USA

Volume

2

fYear

2003

fDate

19-25 Oct. 2003

Firstpage

717

Abstract

A new whole-body PET scanner from General Electric (Discovery ST) is based on 6×6 BGO block detector using quad photo multipliers and utilizes a state of the art data acquisition system. The detector consists of 280 detector units in a ring structure. Each detector unit consists of a BGO block and a quad photomultiplier. The DST scanner has high sensitivity compared to other available whole-body scanners. This paper presents the characterization parameters of the detector including energy resolution, the quality of position maps, temperature dependence, and timing resolution. The data from several production samples are analyzed and compared to the design models. Stability and long-term drift measurements are provided for system sensitivity and PMT gains.

Keywords

biomedical imaging; photomultipliers; positron emission tomography; DST scanner; characterization parameters; design models; detector characterization; detector unit; discovery ST whole-body PET scanner; energy resolution; photomultipliers; position maps; temperature dependence; timing resolution; whole-body scanners; Data acquisition; Detectors; Energy resolution; Gain measurement; Photomultipliers; Production; Stability; Temperature dependence; Timing; Whole-body PET;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2003 IEEE

ISSN

1082-3654

Print_ISBN

0-7803-8257-9

Type

conf

DOI

10.1109/NSSMIC.2003.1351800

Filename

1351800