|ESCR 2015 / P-0030|
|Features of coronary CT angiography in evaluation of coronary plaques: Comparison with intravascular ultrasound.|
Methods and Materials
Twenty five patients (8 women, age from 31 to 76 years) with acute coronary syndrome who showed significant coronary artery stenosis (> or =50% diameter stenosis) by invasive coronary angiography underwent MSCT and VH IVUS within 24 hours after onset. Cardiac CT imaging was performed using a 64-detector row helical scanner. CT angiography data sets were evaluated by an observer, who was blinded to the IVUS data. Invasive coronary angiography was performed according to the standard protocol. During selective coronary angiography, IVUS examinations were performed in burden segments. IVUS-console was used to interpretate results. All angiograms and IVUS images were analyzed at an angiographic laboratory by technicians. We used intravascular ultrasound with virtual histology as a gold standard for detection of coronary plaque components.
Percent of stenosis, plaque length, Xray minimum density, spotty calcification (diameter <3 mm), remodeling index (RI), uneven contour, “ringlike” enhancement were estimated in 40 burden segments by CT (Fig. 1 - fig. 5). The sings ofinstability by CT were compared with characteristics of plaques by VH IVUS.
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