(uncountable, film) The method or practice of adjusting widescreen film images, especially 2.35:1 or 2.39:1 aspect ratio, so that they can be shown within the proportions of a 1.33:1 or 1.78:1 aspect ratio television screen, by cropping off sides of the original widescreen image, as opposed to letterboxing.

(film) To adjust widescreen film images so that they can be shown with standard television aspect ratios by cropping the original image, i.e. using pan and scan methods.

(medicine) Computed axial tomography scan.

(medicine) An X-ray of bone taken after injection of radioactive material that accumulates there and reveals its structure.

plural of CAT scan

(construction) The use of a mechanical device (capacitance, infrared or nuclear) to detect the presence of moisture within an assembly.

(electronics) One of the horizontal lines that compose a raster scanning pattern, as on a television or computer display. / (computing) A single row of pixels in a raster graphics image.

plural of scan line

plural of B-scan

An ultrasonographic diagnostic test used in optometry and ophthalmology to produce a two-dimensional, cross-sectional view of the eye and the orbit.