Fig. 2
CCTA examination showed different types of artefacts and scoring results. Patient 1 (1 A, 1B, 1 C, 1D) – 1 A shows the axial image at the position marked by the arrow in 1B (RCA curved CPR reconstruction). 1 C is the CCTA axial image, where the contour of the RCA segment is unclear, with a comet-tail blur at the arrow position. 1D (VR image) shows the overall continuity of the CCTA with no layering or motion artefacts, indicating that only the RCA segment exhibits artefacts, with a score of 4. Patient 2 (2 A, 2B, 2 C, 2D, 2E, 2 F) – 2 A and 2 C correspond to 2B (RCA curved CPR reconstruction) and 2D (LCX curved CPR reconstruction) at the marked positions in the axial images. 2E is the CCTA axial image, where the contours of both the RCA and LCX vessels are unclear, with comet-tail blur present. 2 F (VR image) demonstrates the overall continuity of the CCTA with no layering or motion artefacts, indicating artefacts in both the RCA and LCX segments, resulting in a score of 3.
