This book presents the state of the art in targeted radionuclide therapy, both in clinical practice and contemporary clinical investigation and trials. With contributions from an internationally-distinguished group of physicians and scientists, the book is devoted entirely to the use of nuclear medicine techniques and technology for therapy of malignant and benign diseases. Individual chapters cover the scientific principles and clinical applications of radionuclide therapy and the state of clinical trials of agents currently under investigation in the therapy of tumors involving virtually every organ system. Due to overlapping interest in techniques, indications, and clinical use, the development of radionuclide therapy attracts considerable input from other medical specialists whose collaboration is essential, including radiation and medical oncologists, hematologists, diagnostic radiologists, hepatologists, endocrinologists, and rheumatologists.