Patent ID: 8164063
Filing Date: 2012-04-24
Classification: G01R,G01T

Abstract:
1. A radiation detection apparatus comprising: a scintillator which generates scintillation photons in response to received radiation photons; a photosensor in optical communication with the scintillator and which generates photosensor signals in response to the scintillation photons; a first signal detector which generates a first output signal if a photosensor signal satisfies a first signal criteria, wherein the first signal criteria identifies the photosensor signal as indicative of temporally initial scintillation photons generated by the scintillator in response to the received radiation photons; a second signal detector which generates a second output signal if the photosensor signal alternatively satisfies a second signal criteria, wherein the second signal criteria identifies the photosensor signal as indicative of temporally subsequent scintillation photons generated by the scintillator in response to the received radiation photons; and a radiation signal detector which evaluates the first and second output signals to determine if the second output signal has been received within an acceptance time window, wherein receiving the first output signal defines a starting point of the acceptance time window, and if the second output signal is received within the acceptance time window, the radiation signal detector identifies photosensor signals indicative of radiation received by the scintillator; and if the second output signal is not received within the acceptance time window, the radiation signal detector does not identify photosensor signals indicative of radiation received by the scintillator.