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. Author manuscript; available in PMC: 2017 Jul 10.
Published in final edited form as: Abdom Imaging. 2013 Feb;38(1):82–97. doi: 10.1007/s00261-012-9897-z

Figure 6. Ultra-low-dose CT colonography: traditional filtered back-projection (FBP) versus novel iterative reconstruction.

Figure 6

3D endoluminal image from ultra-low-dose CTC series (0.3 mSv) with FBP (A) shows substantial image noise that partially obscures an 8-mm polyp (arrow). When the same CTC series is reconstructed with a novel iterative method (B), the noise is greatly reduced and the polyp (arrow) is more conspicuous. Sub-mSv 3D CTC is feasible with these newer algorithms.