Systems and methods for sorting and summing signals from an imaging detector

摘要

A system includes a detector and a main processing unit having an event processing module. The detector includes pixels to detect an event corresponding to photon absorption. The event processing module is configured to read event information for each event detected by each pixel of the detector in order of receipt from the detector and to compare an energy level value in the event information for each event to a predetermined range of energy level values. An event is counted when the energy level value is within the predetermined range of energy level values. For each event having an energy level below the predetermined range, the energy level value for a next consecutive event in the received event information is read and a combined energy level value of the event and the next consecutive event is determined as well as the pixel locations of the event and the next consecutive event. The combined energy level is counted as a single event when the combined energy level value is within a predetermined range of energy level values and when the pixel location for the event is near a pixel location for the next consecutive event. At least one pixel location is assigned to the single event.

主权项

1. A system, comprising:
a detector comprising multiple pixels, each of the pixels configured to detect events corresponding to energy received during an imaging process, wherein the detector generates event information for each event detected by each of the pixels; and a processing unit comprising a memory for storing the event information and an event processing module having a processor configured to:
read the event information for each event detected by each of the pixels of the detector during the imaging process in order of receipt from the detector;compare an energy level value in the event information for each event to a predetermined range of energy level values;count the event when the energy level value in the event information is within the predetermined range of energy level values;read, for each event having an energy level value below the first predetermined range of energy level values, the energy level value for at least one next consecutive event in the order received from the detector, and determine a combined energy level value of the event and the at least one next consecutive event;determine whether a pixel location for the event is near a pixel location for the at least one next consecutive event;count the combined energy level value as a single event when the combined energy level value is within a combined predetermined range of energy level values and when the pixel location of the event is near the pixel location for the at least one next consecutive event; andassign at least one pixel location for the single event.