ESCR 2015 / P-0030
Features of coronary CT angiography in evaluation of coronary plaques: Comparison with intravascular ultrasound.
Congress: ESCR 2015
Poster No.: P-0030
Type: Scientific Poster
Keywords: Computer Applications-Detection, diagnosis, Ultrasound, CT-Angiography, Cardiac, Arteries / Aorta, Arteriosclerosis
Authors: M. Shabanova, S. K. Ternovoy, S. Gaman, V. mironov, I. Merculova, M. Shariya, T. N. Veselova; Moscow/RU

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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