Computed tomography or computed tomography

The term “ computed tomography ,” or CT, refers to a computerized x-ray imaging procedure in which a narrow beam of x-rays is aimed at a patient and quickly rotated around the body, producing signals that are processed by the machine’s computer to generate cross-sectional images, or “slices

For example, CT images of the brain are commonly viewed with a window extending from 0 HU to 80 HU

Pixel values of 0 and lower, are displayed as black; values of 80 and higher are displayed as white; values within the window are displayed as a grey intensity proportional to position within the window

A computed tomography (CT) scan, commonly referred to as a CT, is a radiological imaging study

The machine was developed by physicist Allan MacLeod Cormack and electrical engineer Godfrey Hounsfield

Their development awarded them the Nobel prize in Physiology or Medicine in 1979

The first scanners were installed in 1974