Title :
Design Studtes of Two Possible Detector Blocks for High Resolution Positron Emission Tomography of the Brain
Author :
Eriksson, L. ; Bohm, Chr ; Kessel-berg, M. ; Holte, S. ; Bergström, M. ; Litton, J.
Author_Institution :
Department of Physics, University of Stockholm, and the Departments of Neuroradiology and Neurophysiology, Karolinska Hospital/Institute, Sweden
Abstract :
Two possible detector designs for high resolution positron camera systems have been investigated. The goal is to achieve an instrument that can measure the whole brain with a spatial resolution of 5 mm FWHM in all directions. For both detectors BGO crystals are used, with the dimension 4.5*9.5*25 mm. One detector scheme utilizes the Anger principle for crystal identification with 16 crystals mounted on two dual PMT:s via a 3 mm light guide. The other detector scheme utilizes position sensitive PMT:s. The figures of merit for these two configurations are discussed in terms of high count rate capabilities and identification reliability.
Keywords :
Anodes; Automatic control; Cameras; Collimators; Crystals; Event detection; Logic; Position sensitive particle detectors; Positron emission tomography; Spatial resolution;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1987.4337360
