- Any visual display of structural or functional patterns of organs or tissues for diagnostic evaluation. It includes measuring physiologic and metabolic responses to physical and chemical stimuli, as well as ultramicroscopy.
Definition from: MeSH via Unified Medical Language System at the National Library of Medicine
- Procedures that produce pictures of areas inside the body.
Definition from: Office of Rare Diseases
at the National Institutes of Health
Related discussion in the Handbook
See also Understanding Medical Terminology.