Imaging is a critical component in the delivery of radiotherapy to patients with malignancy, and this book teaches the principles and practice of imaging specific to radiotherapy. Introductory chapters outline the basic principles of the available imaging modalities including x-rays, ultrasound, CT, MR, nuclear medicine, and PET. Site specific chapters then cover the main tumour sites, reviewing optimal imaging techniques for diagnosis, staging, radiotherapy planning, and follow-up for each site. Chapters are co-authored by oncologists and radiologists specialising in a specific area to provide an authoritative view on the role of imaging in the patient's journey and examples of relevant images are provided throughout. The important areas of radiation protection, exposure justification, and risks, are also comprehensively covered, exploring issues such as balancing radiation exposure with long-term risks of radiation effects such as second cancer induction. ABOUT THE SERIES Radiotherapy remains the major non-surgical treatment modality for the management of malignant disease, with over 50% of patients receiving treatment at some time during the management of their disease.It is based on the application of the principles of applied physics, radiobiology, and tumour biology to clinical practice. Volumes in this series take the reader through the basic principles of different types of radiotherapy or components of radiotherapy, and then develop this by individual sites. This series of practical handbooks are aimed at physicians both in training and practising radiotherapy, as well as medical physicists, dosimetrists, radiographers and senior nurses.