Photon counting-based virtual detector

摘要

Among other things, one or more techniques and/or systems are described for creating virtual channels in a photon emitting imaging modality. The imaging modality comprises a plurality of photon counting channels. Information yielded from two or more photon counting channels during a same or similar acquisition view may be combined to yield a virtual channel that represents a portion of the detection surface substantially equivalent to an area comprised by the two or more photon counting channels. In one example, within a same acquisition view, some virtual channels may comprise a different number of photon counting channels than other virtual channels. Also, different sets of virtual channels may be created for a same acquisition view to produce different images from a single set of data, for example, where there may be overlap between virtual channels such that the same photon counting channel is comprised in more than one virtual channel.

主权项

1. A system for an imaging modality, comprising:
a radiation source configured to emit radiation photons; a detector array configured to detect at least some of the radiation photons, the detector array comprising a plurality of photon counting channels; and a channel combining component configured to generate a virtual channel representing at least a first photon counting channel of the plurality of photon counting channels and a second photon counting channel of the plurality of photon counting channels, wherein a number of photons counted by the virtual channel during a measurement interval corresponds to an average of a number of photons detected by the first photon counting channel during the measurement interval and a number of photons detected by the second photon counting channel during the measurement interval.