1. Atherosclerotic plaque characterization by CT angiography for identification of high-risk coronary artery lesions: a comparison to optical coherence tomography

    Atherosclerotic plaque characterization by CT angiography for identification of high-risk coronary artery lesions: a comparison to optical coherence tomography

    AIMS: Adverse plaque characteristics (APCs) by coronary computed tomography (CT) angiography (CTA) are associated with myocardial ischaemia and future acute coronary syndromes. The overall objective was to determine whether APCs on non-invasive CTA are associated with vulnerable plaque features by invasive optical coherence tomography (OCT). METHODS AND RESULTS: Sixty-eight coronary plaques in 45 patients were evaluated by CTA and OCT. APCs by CTA were: positive remodelling (PR), remodelling index ≥1.10; low attenuation plaque (LAP), any intraplaque voxel <30 Hounsfield units; spotty calcification (SC), intraplaque calcification ≤3 mm; and 'napkin-ring' sign, low intraplaque attenuation surrounded by a higher attenuation rim ...

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