Physical performance of the latest generation of commercial positron scanner

Author

Spinks, T.J. ; Jones, T. ; Gilardi, M.C. ; Heather, J.D.

Author_Institution

Hammersmith Hospital, London, UK

Volume

35

Issue

1

fYear

1988

Firstpage

721

Lastpage

725

Abstract

A study of some of the basic physical performance characteristics of an advanced commercial positron-emission tomograph (PET) is reported. It consists of eight rings of BGO (bismuth germanate) detectors (512/ring) with removable interring septa and retractable transmission ring sources for each ring. The (transaxial) detector width is 5.6 mm, and the lower limit of the spatial resolution in the reconstructed image is about 5 mm. Investigations were carried out of count-rate linearity, image count recovery with object size, the effect of attenuation correction on quantitation, and scatter fraction.<>

Keywords

biomedical equipment; computerised tomography; radioisotope scanning and imaging; BiGe/sub 5/O/sub 12/; attenuation correction; commercial positron scanner; count-rate linearity; image count recovery; object size; positron-emission tomograph; quantitation; removable interring septa; retractable transmission ring sources; scatter fraction; Character generation; Crystals; Cyclotrons; Detectors; Face detection; Hospitals; Image reconstruction; Optical scattering; Positrons; Spatial resolution;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.12819

Filename

12819