Nuclear medicine is a medical imaging specialty involving the use of radioactive compounds for diagnostic and therapeutic purposes. As a medical branch, it is considered part of Diagnostic Imaging, but differs substantially from Radiology with respect to the source of the radiation made visible by the diagnostic devices. Nuclear medicine adopts also some types of radioactive emissions for therapeutic purposes, allowing the employment of the metabolic properties of the radiopharmaceuticals for the cure of certain clinical conditions and malignant diseases. Nuclear medicine is a relatively...