tomography by a technique that produces an image of a relatively thick layer
A form of tomography with a relatively thick plane of focus; especially used in renal radiography. ... Origin: zone + G. Grapho, to write ... (05 Mar 2000) ... 
(zo-nog´rah-fe) a type of tomography that has a particularly thick area of focus, resulting in thicker sections for examination. Called also narrow angle tomography.