Title :
Performance of a GSO brain PET camera
Author :
Karp, J.S. ; Surti, S. ; Freifelder, R. ; Daube-Witherspoon, M.E. ; Cardi, C. ; Adam, L.-E. ; Chase, B. ; Vaska, P. ; Muehllehner, G.
Author_Institution :
Dept. of Radiol., Pennsylvania Univ., Philadelphia, PA, USA
Abstract :
A high sensitivity, high resolution brain PET scanner has been developed. The scanner comprises 58 rows of 320 4×4×10 mm 3 gadolinium orthosilicate (GSO) crystals, coupled to a continuous light guide that is sampled by 288 39-mm photomultiplier tubes in a hexagonal grid. A distortion removal algorithm has been developed to remove position non-linearities and to identify individual crystal regions in a flood image with physical crystal locations on the scanner. A central profile through a sinogram of a point source in the center of the scanner shows that the spatial resolution (fwhm) is 3.5 mm (fwtm=8.4 mm). The Hoffman brain phantom has been successfully imaged to demonstrate the capability of the scanner
Keywords :
biomedical equipment; brain; cameras; gadolinium compounds; photomultipliers; positron emission tomography; 3.5 mm; 39 mm; 8.4 mm; GSO brain PET camera performance; Hoffman brain phantom; continuous light guide; distortion removal algorithm; flood image; gadolinium orthosilicate crystals; hexagonal grid; medical diagnostic imaging; medical instrumentation; nuclear medicine; sinogram; spatial resolution; Attenuation; Cameras; Crystals; Detectors; Energy resolution; High-resolution imaging; Image resolution; Optical coupling; Positron emission tomography; Spatial resolution;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2000 IEEE
Conference_Location :
Lyon
Print_ISBN :
0-7803-6503-8
DOI :
10.1109/NSSMIC.2000.949188
