Reconstruction of X-ray spectra with the energy sensitive photon counting detector Medipix2

High spectral and spatial resolution X-ray transmission radiography and tomography using a Color X-ray Camera

“…These can be associated with peaks in the flat-field spectrum originating from fluorescent radiation from metals near the sensor. A similar effect has been reported in other systems, with fluorescent radiation originating from the chipboard [24] or from the sensor material itself [9]. …”

The role of x‐ray Swank factor in energy‐resolving photon‐counting imaging

“…For example, a-Se has relatively good precision near 33 keV ͑iodine K-edge energy͒ and may be well suited for iodine-specific imaging. In general, spectral tailing caused by escape of scattered x rays causes the incident-photon spectrum to be shifted toward lower energies and deconvolution methods, such as those implemented by the Medipix collaborators and others, 8,13,38,39 may be an important part of accurate energy measurements.…”

The Highly Miniaturised Radiation Monitor

“…This spectrum is then used to modulate the response function, which may be of arbitrarily high resolution, to generate a set of channel count rate estimates (the 'folding' process). In addition to allowing a greater response function resolution, it is proposed that this new model provides a better fit to real spectra when compared to matrix-based methods which typically assume a piecewise constant spectrum [10,11].…”