Book excerpt: The focus of the new Fellowship of the Royal College of Radiologists (FRCR) Part 1 exam has shifted to examining the fundamental physics, and radiation protection required to work safely within a radiology department. This book presents the new syllabus in a multiple-choice format that parallels the new exam. In addition, short answer questions reinforce fundamental teaching points. This essential guide will not only enable candidates to sit the exam with confidence, but will help them achieve a better and long lasting understanding of the subject for their future careers.