The third in a three-volume set exploring Problems and Solutions in Medical Physics, this volume explores common questions and their solutions in Radiotherapy. This invaluable study guide should be used in conjunction with other key textbooks in the field to provide additional learning opportunities. One hundred and forty-four solved problems are provided in ten chapters on basic physics topics, including External Beam Therapy Equipment, Photon Beam Physics, Radiation Dosimetry, Treatment Planning for External Beam Radiotherapy, and External Beam Commissioning and Quality Assurance. Each chapter provides examples, notes, and references for further reading to enhance understanding.Features: Consolidates concepts and assists in the understanding and applications of theoretical concepts in medical physics Assists lecturers and instructors in setting assignments and tests Suitable as a revision tool for postgraduate students sitting medical physics, radiation oncology, and radiology science examinations Kwan Hoong Ng, PhD, is Emeritus Professor at the Faculty of Medicine, University of Malaya, Malaysia, and a Fellow of the IOMP and IUPESM.Ngie Min Ung, PhD, is an Associate Professor in Medical Physics at the Faculty of Medicine, University of Malaya, Malaysia.Robin Hill, PhD, is the head of research and education in Radiation Oncology Medical Physics, Chris O'Brien Lifehouse, Sydney, Australia.