Energy selective X-ray imaging with Medipix

Pixelated photon counting semiconductor X-ray detectors like the Medipix feature adjustable energy thresholds allowing selective counting of photons of a specified energy. This enables energy selective X-ray imaging with advanced material information. Furthermore the photon counting function principle of these detectors enables almost noiseless X-ray imaging providing a high contrast in low contrast objects. The aim of this study is to analyze the stability of the new Medipix3 detector especially in relation to flatfield correction for X-ray imaging applications and to present its use for high resolution low contrast X-ray imaging, and for energy selective X-ray imaging as well.