AIMS AND OBJECTIVES To find out the state of radiation protection and monitoring practices of the public and private X-ray centres in Edo state. MATERIALS AND METHODS Survey visits were made to all the functional X-ray facilities in Edo state and the available facilities identified, staff interviewed and collected data analyzed. RESULT There are 18 functional X-ray facilities comprising 10 ...

With the screen/film X-rays imaging system, Wakamatsu et al. reported that there was a close relationship between the square root of spectral signal-to-noise ratio area and sensitivity measure d' in receiver operating characteristic (ROC) analysis. In this study, we investigated the relationship between image quality and signal detectability in two digital X-ray imaging systems using computed r...