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Industrial computed tomography (CT) scanning is any computer-aided tomographic process, usually X-ray computed tomography, that uses irradiation to produce three-dimensional internal and external representations of a scanned object. Industrial CT scanning has been used in many areas of industry for internal inspection of components.
As an example, each mm 2 of a CT detector may receive several hundred million photon interactions per second during a scan. [ 4 ] To avoid saturation in areas where little material is present between the X-ray source and the detector, the pulse resolving time must be small compared to the average time between photon interactions in a pixel.
CT scanner with cover removed to show internal components. Legend: T: X-ray tube D: X-ray detectors X: X-ray beam R: Gantry rotation Left image is a sinogram which is a graphic representation of the raw data obtained from a CT scan. At right is an image sample derived from the raw data.
Mar. 26—By TARA WYATT Bluefield Daily Telegraph PRINCETON — A new and affordable CT scanner is now available for coronary CTA examination to those wanting reassurance with their cardiac health ...
Electron beam CT scanners are considered a fifth generation CT scanner, with first generation being the pencil beam with translation and rotation, second generation being a fan beam with similar motion to its predecessor, third generation having both rotating fan beam and detectors and fourth generation being a fan beam with a rotating movement but fixed detector.
CT is based on the same principles as X-ray projections but in this case, the patient is enclosed in a surrounding ring of detectors assigned with 500–1000 scintillation detectors [13] (fourth-generation X-ray CT scanner geometry). Previously in older generation scanners, the X-ray beam was paired by a translating source and detector.
Recent research has evaluated the use of computer vision based algorithms that operate on the volumetric data used collected as CT-slice images by these and other manufacturers computed tomography (CT) baggage scanner machines for the automatic detection of other threat types (e.g. guns, knives, liquid containers) using 3D object classification.
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