Computing and electronics •
Graham scan, an algorithm for finding the convex hull of a set of points in the plane •
3D scanning, of a real-world object or environment to collect three dimensional data •
Counter-scanning, in physical micro and nanotopography measuring instruments like scanning probe microscope •
Elevator algorithm or SCAN, a disk scheduling algorithm •
Image scanning, an optical scan of images, printed text, handwriting or an object •
Optical character recognition, optical recognition of printed text or printed sheet music •
Port scanner, in computer networking • Scanf|, a function for retrieving formatted input in the C programming language •
Prefix sum, an operation on lists that is also known as the scan operator •
Raster scan, the rectangular pattern of image capture and reconstruction in television •
Scan chain, a type of manufacturing test used with integrated circuits •
Scan line, one line in a raster scanning pattern •
Screen reading, on computers to quickly locate text elements and images •
Shared Check Authorization Network (SCAN), a database of bad check writers and collection agency for bad checks •
Space Communications and Navigation Program (SCaN), by NASA
Medical •
Schedules for Clinical Assessment in Neuropsychiatry (SCAN), a set of psychiatric diagnostic tools by WHO •
DMSA scan, a radionuclide scan used in kidney studies •
Medical imaging, of the interior of a body •
Medical ultrasound, the medical procedure for examining internal structures, especially when applied to developing foetuses in the womb •
CT scan (computed tomography scan) •
Magnetic resonance imaging, MRI scan •
Switch access scanning, a technique that allows users with motor impairments to use a computer using switch access •
Partner-assisted scanning, a technique that allows a person with severe disabilities to communicate ==Businesses==