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Figure 1 | Radiation Oncology

Figure 1

From: Post-processing sets of tilted CT volumes as a method for metal artifact reduction

Figure 1

An additional tilted CT provides complementary information. Left top (coronal plane): a reconstructed CT consists of a stack of slices (light grey bars), and one of the slices contains two opaque bodies (white circles). Left bottom (transverse plane): this slice containing the opaque bodies is prone to feature a streaking artifact between them (dark grey area). Right top (coronal plane): An additional CT which is tilted against the first one offers complementary information from a different angle, in particular, the dark grey area is partially covered by slices which do not contain any opaque bodies. Right bottom (transverse plane): as a result, when averaging over two or more CTs with complementary information, streaking artifacts are reduced.

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