X-ray tech/diagnostic radiology (DR) is tried-and-true healthcare modality, yet ever-changing technology makes it a continually challenging field. Our comprehensive 3-panel (6-page) guide will make it all easy to understand, including the differences between DR and radiation therapy (RT). All key aspects of DR -- from basic radiophysics to diagnostic testing procedures -- are covered in-depth with up-to-date information, enhanced by useful charts and tables. Each section features The Tech Knows summary of critical points, set off graphically for easy reference.