FUNDAMENTAL ASPECTS OF DIGITAL IMAGING

Abstract

imaging. This trend is influenced technically by the advent of more efficient detectors, improved image processing methods, faster computers, brighter and sharper displays and larger systems for image storage and archiving. The evolution of digital imaging reflects the fast development of information processing technology. In this context measures to describe the quality of medical images are very important. Intuitively we use the terms sharpness, contrast and the amount of noise in an image dependent on the applied radiation dose and the biophysical properties of the examined objects. Quantitative methods for specifying and evaluating the imaging capacity of digital radiographic systems have become an important tool for users, researchers, engineers and service specialists. Of most applications conventional film based methods may be replaced by digital