"The 4th edition was peer-reviewed by four colleagues who brought many valuable corrections and improvements to the textbook. Chapter 32 (now Chapter 31) on Postprocessing Operations in Practice was substantially rewritten with the goal of reducing dozens of differently-named features offered by the various manufacturers of x-ray equipment to a handful of generic terms for what are, after all, generic operations. The advent of digital radiographic imaging has radically changed many paradigms in radiography education. In order to bring the material, we present completely up-to- date, and in the final analysis to fully serve our students, much more is needed than simply adding two or three chapters on digital imaging to our textbooks. This is intended to be a textbook written "by technologists for technologists," with proper focus and scope for the practice of radiography in this digital age. It is sincerely hoped that it will make a substantial contribution not only to the practice of radiography and to patient care, but to the satisfaction and fulfillment of radiographers in their career as well"-- Provided by publisher.