Title :
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
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;
Conference_Titel :
Nuclear Science Symposium, 1999. Conference Record. 1999 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-5696-9
DOI :
10.1109/NSSMIC.1999.845847
