- The science of high-energy radiation and of the sources and the chemical, physical, and biologic effects of such radiation; the term usually refers to the diagnosis and treatment of disease.
- The scientific discipline of medical imaging using ionizing radiation, radionuclides, nuclear magnetic resonance, and ultrasound.
Synonym(s): diagnostic radiology
[radio- + G. logos, study]
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Examples: glitazone, GI cocktail, etc.