The Global Nuclear Medicine Diagnostic Market is estimated at $X.XX billion in 2015 and is expected to reach $XX.XX billion by 2020, at a compound annual growth rate (CAGR) of XX.X%. Nuclear medicine is a branch of medicine that uses radiation to deliver information about the functioning of a person's specific organs or to treat a disease. In most cases, the information will assist the physicians to make a quick, accurate diagnosis of the patient's illness.