Patent ID: 9405023
Filing Date: 2016-08-02
CPC Classification: A61B,G01R,G01T

Claim Text:
1. A multichannel application specific integrated circuit (ASIC) for interfacing with an array of photodetectors in a positron emission tomography (PET) imaging system, the ASIC comprising: a front end circuit having a current amplifier and a current mirror, the front end circuit configured to be coupled to the array of photodetectors and to receive a plurality of discrete analog signals there from, wherein the current amplifier comprises; a time discriminating circuit operably coupled to the front end circuit and configured to generate a hit signal based on a combination of the discrete analog signals, the hit signal representing an indication that radiation has been detected by the array of photodetectors; a first channel operably coupled between the front end circuit and the time discriminating circuit; an energy discriminating circuit operably coupled to the front end circuit and configured to generate a summed energy output signal based on each of the discrete analog signals and summed row and column output signals based on each of the discrete analog signals, the summed energy output signal representing an energy level of the detected radiation in the array of photodetectors, and the summed row and column output signals representing a location of the detected radiation in the array of photodetectors; and a plurality of second channels each operably coupled between the front end circuit and the energy discriminating circuit.