<unk>  is a branch of medicine and medical imaging that uses the<unk>  properties of matter in diagnosis and therapy. More specifically,<unk>  is a part of molecular imaging because it produces images that reflect biological processes that take place at the cellular and subcellular level.<unk>  is the medical specialty dealing with the diagnostic and therapeutic use of unsealed radioactivity.
Nuclear medicine
Gamma ray
Pharmacology
Neurochemistry
Organic chemistry
Medicine
Neuroscience
Pulmonology