Title :
Performance of a small animal PET scanner based on photosensitive wire chambers
Author :
Bruyndonckx, Peter ; Xuan, Liu ; Tavernier, Stefaan ; Shuping, Zhang
Author_Institution :
Inter-Univ. Inst. for High Energies, Brussels, Belgium
Abstract :
A 3D small animal PET scanner, designed and built at the University of Brussels, has been operational since the beginning of 1996. The scanner has a transaxial field of view (FOV) of 110 mm and an axial FOV of 51 mm. The absolute sensitivity is around 35.000 coincidences/s/MBq for a point source at the center of the scanner and the time resolution is 29 ns FWHM. To measure the achievable spatial resolution, a thin 22Na source was scanned at various distances from the scanner axis. The resolution in a reconstructed image for a source close to the center is 3.0 mm FWHM. Finally, to assess the overall image quality, scans were made of a cylindrical phantom with holes of varying diameter
Keywords :
positron emission tomography; absolute sensitivity; achievable spatial resolution; axial FOV; cylindrical phantom; image quality; photosensitive wire chambers; point source; scanner; small animal PET scanner; thin 22Na source; time resolution; transaxial field of view; Animals; Data acquisition; Graphical user interfaces; Image reconstruction; Image resolution; Photonic crystals; Positron emission tomography; Solid scintillation detectors; Spatial resolution; Wire;
Conference_Titel :
Nuclear Science Symposium, 1996. Conference Record., 1996 IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-3534-1
DOI :
10.1109/NSSMIC.1996.591691
