A sinogram of the Shepp Logan phantom

The Radon transform plays an important role in computed tomography since it describes how the raw data are collected. As the x-ray tube rotates around the gantry, the detectors opposite measure the x-ray projections through the object, producing a sinogram, which is effectively the Radon transform of the image. This video demonstrates how the sinogram is created by rotating the digital phantom <as opposed to rotating the x-ray tubes around a real object> and taking projections at each angle. The matlab code and original video were created for a section of a graduate course I taught at UBC.