Patent ID: 8969817
Filing Date: 2015-03-03
Classification: A61B,G01T

Abstract:
1. A matrix device for determining a location and a time of a gamma quantum interaction and comprising a scintillation chamber, wherein said scintillation chamber comprises: (a) scintillation plates constructed out of a plastic scintillator doped with atoms with atomic number of at least 50, wherein surfaces of said scintillation plates are configured to reflect photons incident to said surfaces from inside of said scintillation chamber at an angle greater than a boundary angle, (b) photomultipliers forming detector walls and arranged as side layers (L, G, P, D) of said scintillation chamber and as a front layer (F) and a back layer (T) of said scintillation chamber for registering light pulses emerging from said scintillation chamber and for converting said light pulses into electronic signals, (c) a mounting plate attached from a housing for sheltering said matrix device wherein said photomultipliers are attached to said mounting plate an wherein said mounting plate is situated between said scintillation plates and said housing, and wherein said mounting plate has a net of culled holes, said holes having a size and a shape corresponding to a casing of each of said photomultipliers, (d) a frame attached to said housing, wherein said scintillation plates are embedded in said frame (e) an air layer between said photomultipliers and said scintillation planes and (f) and electronic system configured to: