• Wonseok Huh, Bain & Company

4Statistical image reconstruction: a CT revolution • A picture is worth 1000 words • (and perhaps several 1000 seconds of computation?) Thin-slice FBP ASIR Statistical Seconds A bit longer Much longer (Same sinogram, so all at same dose) 5Why statistical/iterative methods for CT? • Accurate physics models ◦ X-ray spectrum, beam-hardening, scatter,... = ⇒ reduced artifacts? quantitative CT? ◦ X-ray detector spatial response, focal spot size,... = ⇒ improved spatial resolution? ◦ detector spectral response (e.g., photon-counting detectors) = ⇒ improved contrast? • Nonstandard geometrie