This book presents up-to-date information on the general principles of diagnostic and therapeutic nuclear medicine in the context of endocrinology. The content is divided into six parts. Section I examines general aspects of radiopharmaceuticals, scintigraphy, single-photon emission computed tomography (SPECT), positron emission tomography (PET), radionuclide therapies and radioguided surgery. Section II discusses diagnostic applications in benign thyroid diseases and evaluation of thyroid nodules. Section III gives an overview of the management of parathyroid diseases. Section IV presents diagnostic techniques in well-differentiated thyroid cancer. Section V addresses procedures and therapy in adrenal benign and malignant disorders (phaechromocytomas and paragangliomas). Lastly, the diagnosis and treatment of neuroendocrine tumors