Positron Emission Tomography (PET) is a rapidly developing subspecialty of nuclear medicine which, in a very short space of time, has been shown to have a significant impact on patient management. This comprehensive and up-to-date clinical atlas arises out of the combined experience from two leading PET centers during the formative years of clinical application. It is presented as a series of rapidly assimilated "mini-lectures", illustrated by real-life case studies, clear concise teaching points and directions for further reading.