Both the utility of radiographic images and the precision of image interpretation are highly dependent upon image quality and observer competency. There are several approaches that can be used to measure the quality of an image (Alsleem & Davidson, 2012), and a review of the literature revealed even more methods for image quality evalutation in diagnostic imaging. These methods can be classified according to the type of information required (i.e. Level of ambition) into lowest and highest order tasks. To illustrate, those of low order task would measure exposure factors, equipment characteristics and test radiographic technique; by contrast, those of high order task would investigate the images taken of the patients (Seeram, Bushong, Davidson, & Swan, 2014). Both of these approaches include the appraisal of physical, psychophysical and diagnostic performance (figure below). Details on these methods will be described later and the applications and the drawbacks of each will be taken into consideration, as will the appropriate solutions which have been established to counteract their limitations.