Contemporary definitions for backdraft. noun. a sweep of air backwards; also, a condition in a fire where oxygen is depleted and the fire dies down until a door is opened and the fire flares violently from the intake of oxygen.
CT Internal Auditory Canal. CT Scan of the Internal Auditory Canal. A computed tomography scan (CT or CAT) of the internal auditory canal, also called cross-sectional imaging, allows the radiologist to look at different levels, or slices, of the skull bones leading from the ear using a rotating X-ray beam.
CTA (Computed Tomography Angiogram) What is a CTA (Computed Tomography Angiogram) and what does it do? CTA stands for Computed Tomography Angiogram. Though it can be used to describe any CT scan where IV contrast is given during scanning, it usually refers to the scanning of specific vessels after the injection of an Iodine contrast. The exam itself is performed by a Radiologic Technologist RT (R).