The incessant progress in the comprehension of molecular processes of disease formation and progression is accompanied by an increasing importance of biomedical molecular imaging methods. PET, a nuclear medical imaging modality, is ideally suited to produce such kinds of images by use of positron-emitting chemical entities. The purpose of this workshop was to discuss and overview applications and technologies in the area of PET chemistry. The book provides the reader with state-of-the-art information on the different applications of PET isotopes, such as F-18, C-11, Ga-68, Cu-64, Y-86, Br-76, Br-77 and I-124, and their impact on molecular imaging. New technical features such as microwaves, microreactors and modules for the synthesis of new PET tracers are discussed.