Journal of Cardiovascular Computed Tomography

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Journal of Cardiovascular Computed Tomography Coronary CT angiography features of ruptured and high-risk atherosclerotic plaques: Correlation with intra-vascular ultrasound Daniel R. Obaid, Patrick A. Calvert, Adam Brown, Deepa Gopalan, Nick E.J. West, James H.F. Rudd, Martin R. Bennett Journal of Cardiovascular Computed Tomography DOI: 10.1016/j.jcct.2017.09.001 Copyright © 2017 Terms and Conditions

Fig. 1 CTCA, angiographic and IVUS features of plaque rupture. (A) CTCA image of intra-plaque contrast with colour mapping. (B) Corresponding ulceration on coronary angiography. (C) Demonstration that intra-plaque contrast (small arrow) can be difficult to distinguish from small calcified plaque (big arrow) on CTCA. (D) Corresponding co-registered plaque on IVUS. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.) Journal of Cardiovascular Computed Tomography DOI: (10.1016/j.jcct.2017.09.001) Copyright © 2017 Terms and Conditions

Fig. 2 Coronary CTA Napkin-Ring sign and corresponding plaque map. (A) ‘Napkin-Ring’ sign with low attenuation plaque surrounding by higher attenuation non-calcified plaque. (B) Plaque Map with plaque quantification necrotic core (35.3%-dark green) surrounded by fibrous plaque (51.5%-light green)(orange = lumen, calcified plaque = pink (13.2%) Necrotic core/fibrous plaque ratio = 0.69. (C) Co-registered VH-IVUS fibroatheroma (red = necrotic core, green = fibrous plaque and white = calcified plaque). Insets show cross-sectional images at arrows. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.) Journal of Cardiovascular Computed Tomography DOI: (10.1016/j.jcct.2017.09.001) Copyright © 2017 Terms and Conditions

Fig. 3 Co-registration of CT, IVUS and angiography. Fibroatheroma plaque with large necrotic core in Left anterior descending coronary (Arrow) in (A) Catheter angiography (B) CT curved multi-planar reformat and (C) IVUS longitudinal view. Co-registration performed using distances from Left main stem (LMS), LCX-left circumflex artery and SB-side branch. Journal of Cardiovascular Computed Tomography DOI: (10.1016/j.jcct.2017.09.001) Copyright © 2017 Terms and Conditions

Fig. 4 Receiver operator characteristics for plaque characteristics that differentiate thick and thin-capped fibroatheroma. AUC-area under curve. Journal of Cardiovascular Computed Tomography DOI: (10.1016/j.jcct.2017.09.001) Copyright © 2017 Terms and Conditions