electrical source imaging
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
electrical source imagingAbbreviation: ESI
A means of mapping the electrical activity of organs such as the brain or heart to diagnose or treat diseases such as seizures or dysrhythmias. ESI relies on the collection via external sensors of the electrical activity generated by multiple tissue sites within an organ, and the mathematical manipulation of that data to localize areas where patterns of electrical conduction are blocked or excessively active.
See also: imaging