text: <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.
option_0: Nuclear medicine
option_1: Gamma ray
option_2: Pharmacology
option_3: Neurochemistry
option_4: Organic chemistry
option_5: Medicine
option_6: Neuroscience
option_7: Pulmonology