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.
Computed tomography (CT), was originally known as CND scan as it was developed at a research branch of EMI, a company best known today for its music and recording business. It was later known as computed axial tomography (CAT or CT scan) and body section roentgenography. http://en.wikipedia.org/wiki/Computed_tomography. Magnetic resonance imaging (MRI) is primarily used in medical imaging to visualize the structure and function of the body. It provides detailed images of the body in any plane. http://en.wikipedia.org/wiki/Mri_scan.