The present invention concerns very fast scintillator materials capable of resolving the position of an annihilation event within a portion of a human body cross-section. In one embodiment, the scintillator material comprises LaBr.sub.3 doped with cerium. Particular attention is drawn to LaBr.sub.3 doped with a quantity of Ce that is chosen for improving the timing properties, in particular the rise time and resultant timing resolution of the scintillator, and locational capabilities of the scintillator.
STATEMENT AS TO RIGHTS TO INVENTIONS MADE UNDER FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Aspects of this research was conducted with funding provided by the Department of Energy and the National Institute of Health. Contract No. DE-AC03-76SF00098 and Grant Nos. R01-CA67911 and P01-HL25840, respectively. The United States Government may have certain rights in the application.