Performance of an X-ray imaging detector based on a structured scintillator

摘要

Structured scintillator plates have been fabricated by filling thallium-doped caesium iodide (Csl) into asilicon pore array. Their X-ray imaging properties have been characterized using a standard dental X-raysource and a charge coupled device (CCD) detector. Results indicate that finer structured pore arraysprovide superior imaging resolution while their light output is lower. Direct absorption of X-ray quantain the CCD is a significant contributor of detector noise. This can be avoided by using a thick fibre opticplate or, in certain cases, by using a hot-pixel software algorithm.