An X-ray imaging detector based on pixel structured scintillator

Abstract

An X-ray imaging detector consisting of a silicon charge coupled device (CCD) and pixel structured scintillator was developed to improve spatial resolution. The pixelated structure reduces spreading of scintillation light through the scintillator by providing air gap between scintillator pixels, and increased spatial resolution by reducing the cross-talk between CCD pixels. The modulation transfer Functions (MTF) of the non-pixelated and pixilated scintillator detector were compared. The improvement in spatial resolution was evaluated by both computational simulation and experimental measurement of MTF; both results showed coincidence. (c) 2007 Elsevier Ltd. All rights reserved.