A COMPUTER-IMPLEMENTED METHOD FOR IDENTIFYING AND LOCALIZING RADIATION EVENTS AND A PIXILATED RADIATION DETECTOR FOR CARRYING OUT THE METHOD

摘要

The present invention relates to a computer-implemented method (200) of radiation events localizations for a pixelated radiation detector (10) comprising at least one scintillator array (24) of scintillator array elements (26) arranged in an (m)x(n) array, and an optical sensor array (28) of optical sensors (30) arranged in a (q)x(z) array and coupled to the scintillator array (24) in light sharing mode for determining a spatial intensity distribution of scintillation photons, wherein the scintillation photons are emitted by the scintillator array (24) in response to incident radiation events at photo conversion positions; said computer-implemented method (200) comprising the steps of:- sampling (72) spatial intensity distributions of scintillation photons emitted by the scintillator array (24) in response to multiple incident radiation events;- performing at least one clustering analysis (76) based on the sampled spatial intensity distributions of scintillation photons (80), to obtain clusters (84) of radiation events attributed to scintillator array elements (26), wherein the dimension of the sampled spatial intensity distributions of the scintillation photons correspond to the (q)x(z) dimensions of the optical sensor array (28), and- determining the localization of the radiation events based on the at least one clustering analysis (76).