Book excerpt: This book is a comprehensive review and study aid for radiation therapists. Organized in a question-and-answer format, it present clinical features and principles of treatment. Topics include radiation therapy physics, radiobiology, treatment and simulation equipment, principles of patient care, clinical components of cancer care, and cancers of the brain, head and neck region, and respiratory, digestive, urinary, and male and female reproductive systems. It offers over 500 multiple-choice questions with detailed answers and rationales. Radiation Therapy Study Guide is a valuable resource for radiation therapists preparing for certification examinations as well as for practicing therapists in need of a review.