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Figure 4 | Radiation Oncology

Figure 4

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

Figure 4

The location of artifacts depends on the orientation of the phantom: ‘tilted’ CTs from different angles provide complementary information. Six reconstructions of the same Gammex 467 phantom have been obtained from CTs taken at different angles. After co-registration, the reconstructions may be compared side by side as in this figure. In each case, the titanium insert on the right side causes streaking artifacts. However, the regions affected (or unaffected) by artifacts depend on the gantry angle. Therefore, the different reconstructions provide complementary information.

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