This book has been divided into three modules. The first module discusses about radiation hazards, radiation protection and taking care of radiological equipment. The second module discusses about biological effects of radiation, measurement of radiation, planning of x-ray rooms and personal monitoring systems. The third module sheds light on patient protection, preventive maintenance, quality assurance checks, and quality control in radiology and radiation safety. Each chapter starts with an introduction and then discusses about learning objectives, before switching over to the subject matter. Students will find Check Your Progress, i.e., a questionnaire in each chapter. The chapters also offer Summary, Keywords, Exercise, Answers to Check Your Progress and Further Readings at the end. This is an indispensable book for the students of radiation safety and quality control and other people interested in this subject.