Computed tomography (CT) is a non-destructive imaging technique that uses a computer to generate cross-sectional images from a series of X-ray projections acquired at multiple angles around an object. Scanning methods are typically categorized by their X-ray beam geometry, including parallel beam, fan beam, and cone beam systems. A computer then processes these projection data to reconstruct a cross-sectional image (also known as a CT slice or tomogram). The mathematical principle underlying this reconstruction is based on the Radon transform and its inverse.
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