Perception created in the mind that is not physically present.

plural of mental image

A kind of monozygotic twin exhibiting reversed asymmetry with the other twin in certain physical characteristics.

plural of mirror-image twin

(computing) The process of creating a ghost image of all the contents of a hard drive as a backup that may be stored and later retrieved if needed.

(medicine) The use of medical diagnostic devices in the office of a treating physician, not relying on an outside service.

(physics) Synonym of thermography

(neuroscience) The use of various techniques to image the structure and function of the nervous system.

(medicine) A technique that uses nuclear magnetic resonance to form cross sectional images of the human body for diagnostic purposes.

Functional magnetic resonance imaging.