Patent Document ID: 20120053847
Application ID: 13292755
Patent Flag: 0

Claim One:
1. A radioisotope identification device comprising: a gamma-ray detector interacting with a flux of gamma-rays emitted from said radioisotope; said flux of gamma-rays comprising a first gamma-ray and a second gamma-ray; a first set of gamma-ray event data comprising said first gamma-ray interacting, at least in part, via Compton scattering within said detector and producing two first interaction vertices within said detector and said gamma-ray detector having a first signal output of three dimensional vertex localization for each said two first interaction vertices and said gamma-ray detector having a first energy output for one of the two first interaction vertices; a second set of gamma-ray event data comprising said second gamma-ray interacting, at least in part, via Compton scattering within said detector and producing two second interaction vertices within said detector and said gamma-ray detector having a second signal output of three dimensional vertex localization for each said two second interaction vertices and said gamma-ray detector having a second energy output for one of the two second interaction vertices; a computational processor communicatively coupled to said gamma-ray detector to receive said first set of gamma-ray event data and said second set of gamma-ray event data; a computer-readable storage media, wherein a data set of emission gamma-ray energies characteristic of suspect radioisotopes is stored; said computational processor communicatively coupled to said computer-readable storage media; a computational model of said gamma-ray detector; wherein said computational processor is configured to select a first hypothetical radioisotope; wherein said computational processor is configured to calculate a first Compton angular coordinates of said first hypothetical radioisotope using said first set of event data and using said computational model of said gamma-ray detector; wherein said computational processor is configured to calculate a second Compton angular coordinates of said first hypothetical radioisotope using said second set of event data and using said computational model of said gamma-ray detector; wherein said computational processor is configured to detect angular regions of suppressed correlation between said a first Compton angular coordinates and said second Compton angular coordinates; and an output from said computational processor indicating radioisotope source location.