X-ray microradiography is a non-destructive technique that has received much attention in recent
years. In principle, low energy X-ray radiation passes through an inspected sample and a high
position resolution detector, based on a scintillator and an optical device, is used to detect the
transmitted X-rays. It is a contrast imaging technology which utilizes the difference in X-ray absorption
by different materials. Recently, three-dimensional micro-CT imaging has been attracting
growing interest.