Effect of spatio-energy correlation in PCD due to charge sharing, scatter, and secondary photons

A framework for performance characterization of energy‐resolving photon‐counting detectors

“…Several studies have been published on how to model the frequency‐dependent detective quantum efficiency of photon‐counting detectors, but these studies do not take energy information into account. At the same time, the impact of detector nonidealities on spectral imaging tasks has been studied by several authors . However, these publications only study the zero‐spatial‐frequency performance and do not investigate the frequency‐dependent spectral performance.…”

“…At the same time, the impact of detector nonidealities on spectral imaging tasks has been studied by several authors. [21][22][23][24][25][26][27] However, these publications only study the zero-spatial-frequency performance and do not investigate the frequency-dependent spectral performance. Shikhaliev et al 28 studied the effect of characteristic x rays on the spectrum shape and on the spatial resolution.…”

Spatio‐energetic cross‐talk in photon counting detectors: N × N binning and sub‐pixel masking

“…As indicated by Ref. , the magnitude of the adverse effect of cross‐talk strongly depends on the applications. The goodness of the soft tissue contrast is governed by the goodness of the total counts; thus, studying counts above a single threshold was sufficient and necessary.…”

Spectral resolution and high‐flux capability tradeoffs in CdTe detectors for clinical CT

“…When a photon deposits signal that is shared between multiple pixels, the information is blurred, reducing its high‐frequency signal. The detective quantum efficiency is therefore reduced in high spatial frequency tasks . Photons arriving at a pixel will deposit charge in neighboring pixels.…”