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. Author manuscript; available in PMC: 2023 Mar 3.

Published in final edited form as: Nat Rev Cardiol. 2022 Apr 21;19(10):684–703. doi: 10.1038/s41569-022-00687-9

Figure 1. — (A) Guide wire (arrow) causes a shadow (asterisk). (B) Gas bubbles in the catheter (arrow) cause a shadow (asterisk). (C) Suboptimal vessel flushing leads to residual blood in the lumen (asterisk), hampering the assessment of the vessel (D) Ghost lines (arrow). (E) Non-uniform rotational distortion (NURD) (asterisk). (F) Fold-over artifact (arrow). (G) Tangential signal dropout. Blue lines indicate the direction of light beams tangential to the tissue that appears to have an artifactual light dropout. (H) Seam artifact (arrow). (I) Blooming. Stent struts (arrows) appear thicker than the actual thickness due to blooming artifact. (J) Saturation. Arrows point to high signal intensity artifact that extends along the axial dimension. (K) Merry-go-round artifact is artifactual stretching in the lateral (rotational) direction of stent struts (arrows), which occurs due to scatters in the lumen such as residual blood, clots and neointima. (L) Sunflower artifact may cause a well-apposed stent to appear malapposed in a vessel (white circles).

Figure 1. — (A) Guide wire (arrow) causes a shadow (asterisk). (B) Gas bubbles in the catheter (arrow) cause a shadow (asterisk). (C) Suboptimal vessel flushing leads to residual blood in the lumen (asterisk), hampering the assessment of the vessel (D) Ghost lines (arrow). (E) Non-uniform rotational distortion (NURD) (asterisk). (F) Fold-over artifact (arrow). (G) Tangential signal dropout. Blue lines indicate the direction of light beams tangential to the tissue that appears to have an artifactual light dropout. (H) Seam artifact (arrow). (I) Blooming. Stent struts (arrows) appear thicker than the actual thickness due to blooming artifact. (J) Saturation. Arrows point to high signal intensity artifact that extends along the axial dimension. (K) Merry-go-round artifact is artifactual stretching in the lateral (rotational) direction of stent struts (arrows), which occurs due to scatters in the lumen such as residual blood, clots and neointima. (L) Sunflower artifact may cause a well-apposed stent to appear malapposed in a vessel (white circles).