PERFORMANCE STUDY OF A 3D SMALL ANIMAL PET SCANNER BASED ON BAF2 CRYSTALS AND A PHOTO SENSITIVE WIRE CHAMBER

Authors
BRUYNDONCKX P LIU XA TAVERNIER S ZHANG SP
Citation
P. Bruyndonckx et al., PERFORMANCE STUDY OF A 3D SMALL ANIMAL PET SCANNER BASED ON BAF2 CRYSTALS AND A PHOTO SENSITIVE WIRE CHAMBER, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 392(1-3), 1997, pp. 407-413
Citations number
10
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
392
Issue
1-3
Year of publication
1997
Pages
407 - 413
Database
ISI
SICI code
0168-9002(1997)392:1-3<407:PSOA3S>2.0.ZU;2-I
Abstract
A 3D small animal PET scanner, designed and built at the University of Brussel, has been operational since the beginning of 1996. The scanne r has a transaxial field of view (FOV) of 110 mm and an axial FOV of 5 2 mm. The absolute sensitivity is around 35,000 coincidences s(-1) MBq (-1) for a point source at the center of the scanner and the time reso lution is 29 ns FWHM. To measure the achievable spatial resolution, a thin Na-22 source was scanned at various distances from the scanner ax is. The resolution in a reconstructed image for a source close to the center is 3.0 mm FWHM. This figure can be improved at the expense of t he sensitivity by lowering the voltage on the anodes in the wire chamb er. Finally, to assess the overall image quality, scans were made of a cylindrical phantom with holes of varying diameter.