A high-resolution GSO-based brain PET camera

Author

Karp, J.S. ; Adam, L.-E. ; Freifelder, R. ; Muehllehner, G. ; Liu, F. ; Surti, S.

Author_Institution

Dept. of Radiol., Pennsylvania Univ., Philadelphia, PA, USA

Volume

2

fYear

1999

fDate

1999

Firstpage

1077

Abstract

A high-resolution GSO-based PET camera is being developed for brain imaging. The system is based upon a detector that uses Anger-logic positioning with 4×4×10 mm³ crystals coupled to a continuous light-guide and an array of 39-mm diameter photomultiplier tubes. Measurements of a small crystal array have demonstrated that individual crystals can be resolved. The system is 3D (no septa) with a diameter of 42 cm and an axial field-of-view of 25 cm. The detector and overall scanner design has been guided by Monte Carlo simulations. The GSO PET scanner will have improved spatial resolution and higher count-rate capability than the NaI(TI) HEAD Penn-PET scanner that was built previously. GSO was chosen because of its higher stopping power, faster decay, and excellent energy resolution, which is critical for good scatter rejection

Keywords

biomedical equipment; gadolinium compounds; gamma-ray detection; positron emission tomography; solid scintillation detectors; Anger-logic positioning; Gd₂SiO₅; Monte Carlo simulations; brain PET camera; brain imaging; continuous light-guide; high count-rate capability; high stopping power; high-resolution; improved spatial resolution; photomultiplier tube array; scanner design; scatter rejection; small crystal array; Brain; Cameras; Crystals; High-resolution imaging; Optical arrays; Optical coupling; Photomultipliers; Positron emission tomography; Sensor arrays; Spatial resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1999. Conference Record. 1999 IEEE

Conference_Location

Seattle, WA

ISSN

1082-3654

Print_ISBN

0-7803-5696-9

Type

conf

DOI

10.1109/NSSMIC.1999.845847

Filename

845847