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. 2012 Dec;85(1020):e1190–e1197. doi: 10.1259/bjr/18174517

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© 2012 The British Institute of Radiology

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Maximum intensity projection images of the right coronary artery (RCA) in five different patients show the image quality score. (a) Score 1, no motion artefact was found in the whole RCA. (b) Score 2, minimal motion artefact was found in the RCA, middle segment (RCA2) (arrow). (c) Score 3, two stair-step artefacts were found in RCA2 (arrows). (d) Score 4, severe artefacts were found in the RCA, distal segment (RCA3) (arrow), and the assessment of RCA3 was limited. (e) Score 5, RCA2 cannot be identified because of marked motion artefact (arrow), but RCA3 was well delineated, so the image quality of RCA3 was rated as score 1.