Is Iterative Reconstruction Ready for MDCT?

摘要

Although the very first computed to-mographic scanners used the iterative algebraic reconstruction technique, the filtered back-projection (FBP) method soon became the gold standard for computed tomographic reconstruction. Image quality has dramatically improved over the past 30 years thanks to advances in x-ray tubes, detector technologies, and overall system design and integration, as well as refinements to image reconstruction algorithms. Typical effective dose values range from 5 to 7 mSv for chest computed tomography (CT) and from 8 to 12 mSv for abdominal and pelvic CT, compared with 0.02 to 0.2 mSv for chest x-ray, making CT a comparatively high-dose modality.