CT Scan Reconstruction Simulator

Computed tomography never photographs the inside of the body directly — it infers the cross-section from many one-dimensional X-ray measurements. This simulator models that process end to end: a source/detector pair orbits a virtual patient slice containing soft tissue, a bone ring and a lesion of adjustable contrast, sending a parallel beam of rays through it at every angle. Each ray's attenuation becomes one projection; every projection is smeared back across a reconstruction grid, and — with the ramp filter enabled — sharpened the way a real scanner's filtered back-projection does. Watch the blurry star pattern of plain back-projection resolve into a clean image as more angles accumulate, and see how low tissue contrast makes that convergence much harder.