<P> Industrial CT Scanning (industrial computed tomography) is a process which utilizes X-ray equipment to produce 3D representations of components both externally and internally . Industrial CT scanning has been utilized in many areas of industry for internal inspection of components . Some of the key uses for CT scanning have been flaw detection, failure analysis, metrology, assembly analysis, image - based finite element methods and reverse engineering applications . CT scanning is also employed in the imaging and conservation of museum artifacts . </P> <P> CT scanning has also found an application in transport security (predominantly airport security where it is currently used in a materials analysis context for explosives detection CTX (explosive - detection device) and is also under consideration for automated baggage / parcel security scanning using computer vision based object recognition algorithms that target the detection of specific threat items based on 3D appearance (e.g. guns, knives, liquid containers). </P> <P> The history of X-ray computed tomography goes back to at least 1917 with the mathematical theory of the Radon transform . In October 1963, Oldendorf received a U.S. patent for a "radiant energy apparatus for investigating selected areas of interior objects obscured by dense material". The first commercially viable CT scanner was invented by Sir Godfrey Hounsfield in 1967 . </P> <P> The word "tomography" is derived from the Greek tome (slice) and graphein (to write). Computed tomography was originally known as the "EMI scan" as it was developed in the early 1970s 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 röntgenography . </P>

In which decade was the ct scanner developed