Patent ID: 8859973
Filing Date: 2014-10-14
Classification: A61B,G01T

Abstract:
1. A strip device for determining a location and a time of a gamma quantum reaction, comprising a scintillation chamber, wherein said scintillation chamber has an internal cylindrical surface at which there are arranged a plurality of scintillator strips, wherein surfaces of said scintillator strips are configured to reflect photons falling on said surfaces from inside of said scintillation chamber at an angle greater than a boundary angle, each scintillator strip being optically connected to photomultipliers for receiving, via light-guides, photons of light, resulting from a gamma quantum absorbed in a scintillator material of said scintillator strip, wherein an energy of said gamma quantum is transferred entirely to an electron of said scintillator material via a photoelectric effect or partially via a Compton effect, which reach a front edge or a rear edge of said scintillator strip, and wherein said device further comprises an electronic system for determining a location of annihilation points along lines of response, said electronic system being configured to: (a) select events for which signals are registered within a fixed time interval in a pair of said scintillator strips spaced with a relative distance, and (b) for each selected event, (c) provide a tomographic image from a set of said determined lines of response and said places of annihilation along said lines of response determined for each of said selected events, and (d) wherein said scintillator strips are made of plastic doped with atoms with atomic number of at least 50.