scholarly journals 2871Positive effect of new oral anticoagulation on coronary plaque composition? A coronary CT study

2017 ◽  
Vol 38 (suppl_1) ◽  
Author(s):  
F. Plank ◽  
C. Beyer ◽  
M. Wildauer ◽  
M. Stuehlinger ◽  
W. Dichtl ◽  
...  
Keyword(s):  
Oral Anticoagulation ◽  
Coronary Plaque ◽  
Plaque Composition ◽  
Coronary Ct

scholarly journals P360 Site specific phenotype of atherosclerotic lesions according to plaque location within the coronary tree, a CCTA based study

2020 ◽  
Vol 21 (Supplement_1) ◽  
Author(s):  
D Opincariu ◽  
N Rat ◽  
A Mester ◽  
R Hodas ◽  
D Cernica ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Stable Coronary Artery Disease ◽  
Coronary Plaque ◽  
The European Union ◽  
Plaque Composition ◽  
Cross Sectional ◽  
Coronary Ct ◽  
Atherosclerotic Lesions ◽  
The Government ◽  
Artery Disease

Abstract Funding Acknowledgements Research grant PlaqueImage, contract number 26/01.09.2016, SMIS code 103544, Project funded by the European Union and the Government of Romania Background The coronary CT angiography (CCTA)-based differences in composition, morphology and vulnerability of coronary plaques (CPs), according to their location within the coronary tree, have not been investigated so far. Purpose We sought to perform a comparative analysis between plaques located at different levels within the coronary tree, to identify the differences in plaque composition, morphology, and vulnerability between the three major coronary branches. Methods We conducted a cross-sectional, observational study on 75 patients with stable coronary artery disease who underwent CCTA for assessment of coronary lesions that exhibited at least one vulnerable plaque (VP) in the coronary tree. After image acquisition, coronary plaque analysis was performed with the use of the Syngo.via Frontier (Siemens) software. Plaque analysis also included evaluation of presence of VM: low attenuation plaque – LAP; napkin ring sign – NRS; spotty calcifications – SC; positive remodeling – PR. VP were defined as lesions that presented at least 1 vulnerability marker (VM). In total, 90 coronary VPs located at the level of the left anterior descending (LAD; n = 30), circumflex (CXA; n = 30) and right coronary artery respectively (RCA; n = 30) were identified and analyzed. Results Lesions located in the RCA presented a significantly higher length (LAD - 18.67± 5.49 vs. CXA - 15.48 ±3.73 vs. RCA - 20.47 ± 5.97 mm, p = 0.001), a higher degree of stenosis (LAD - 57.77 ± 8.62 vs. CXA - 54.50 ± 11.25 vs. RCA - 59.63 ± 10.42 mm, p = 0.022), and were more voluminous (LAD - 187.9 ± 86.03 vs. CXA - 146.9 ± 102.4 vs. RCA - 248.1 ± 11.4 mm3, p = 0.0007) compared to those located in the LAD and CXA, but no difference was observed regarding the remodeling (p = 0.180) or eccentricity indexes (p = 0.423). Plaque composition was also significantly different according to plaque location: calcified volume (LAD - 44.07 ± 63.90 vs. CXA - 12.40 ± 19.65 vs. RCA - 33.69 ± 34.38 mm3, p = 0.002), non-calcified volume (LAD - 143.8 ± 76.02 vs. CXA - 134.5 ± 102.2 vs. RCA - 214.4 ± 99.67 mm3, p = 0.002), lipid rich volume (LAD - 14.95 ± 22.69 vs. CXA - 6.44 ± 13.42 vs. RCA -16.07 ± 15.74 mm3, p = 0.0005), fibrotic volume (LAD - 128.9 ± 66.10 vs. CXA - 128.1 ± 91.56 vs. RCA - 198.3 ± 92.34 mm3, p = 0.003). The highest number of VM per plaque was present in the LAD (LAD - 2.2 ± 0.8 vs. CXA - 1.6 ± 0.7 vs. RCA - 1.8 ± 0.6, p = 0.01), as well as highest rate of VPs (LAD – 80%, CXA – 46.6%, RCA – 70%, p = 0.01). No difference was registered between coronary arteries on the presence of SCs (p = 0.670), NRS (p = 0.455), PR (p = 0.833), but LAPs were more frequently located in the LAD (p = 0.0009). Conclusions Coronary plaques located in the RCA were more voluminous and exhibited a higher volume of lipid rich and non-calcified atheroma. However, compared to the RCA and CXA, the left anterior descending artery presented CPs with a more expressed degree of vulnerability, a higher number of vulnerability markers per plaque, and a higher incidence of LAP.

scholarly journals Coronary CT Angiography in the Quantitative Assessment of Coronary Plaques

2014 ◽  
Vol 2014 ◽  
pp. 1-14 ◽  
Author(s):  
Zhonghua Sun ◽  
Lei Xu
Keyword(s):  
Quantitative Assessment ◽  
Coronary Plaque ◽  
Plaque Composition ◽  
Coronary Syndrome ◽  
Coronary Ct ◽  
Vulnerable Plaques ◽  
Clinical Presentations ◽  
Recent Developments ◽  
The Relationship

Coronary computed tomography angiography (CCTA) has been recently evaluated for its ability to assess coronary plaque characteristics, including plaque composition. Identification of the relationship between plaque composition by CCTA and patient clinical presentations may provide insight into the pathophysiology of coronary artery plaque, thus assisting identification of vulnerable plaques which are associated with the development of acute coronary syndrome. CCTA-generated 3D visualizations allow evaluation of both coronary lesions and lumen changes, which are considered to enhance the diagnostic performance of CCTA. The purpose of this review is to discuss the recent developments that have occurred in the field of CCTA with regard to its diagnostic accuracy in the quantitative assessment of coronary plaques, with a focus on the characterization of plaque components and identification of vulnerable plaques.

Abstract 681: Characteristics of Atherosclerotic Plaque Burden in Patients With and Without Acute Coronary Syndrome Presenting With Acute Chest Pain to the Emergency Department

Circulation ◽  
2008 ◽  
Vol 118 (suppl_18) ◽  
Author(s):  
Fabian Bamberg ◽  
Maros Ferecik ◽  
Quynh Truong ◽  
Ian Rogers ◽  
Michael Shapiro ◽  
...  
Keyword(s):  
Emergency Department ◽  
Chest Pain ◽  
Coronary Arteries ◽  
Atherosclerotic Plaque ◽  
Acute Chest Pain ◽  
Coronary Plaque ◽  
Plaque Burden ◽  
Coronary Syndrome ◽  
Coronary Ct ◽  
Calcified Plaque

Background: Coronary computed tomography (CT) may improve the early triage of patients with acute chest pain in the emergency department (ED). The aim of this study was to compare the presence and extent of coronary atherosclerotic plaque as detected by coronary CT in patients with and without acute coronary syndromes (ACS). Methods: The study was designed as a prospective, observational cohort study in patients with acute chest pain but negative cardiac biomarkers and no diagnostic ECG changes, admitted to rule out myocardial ischemia. All patients underwent coronary CT prior to hospital admission. The presence of coronary plaque was treated as a dichotomous outcome, and the extent of CAD was defined as number of (1) coronary segments with plaque, or (2) major coronary arteries with plaque detected by MDCT as assessed by two independent observers. The clinical outcome (ACS) was adjudicated by a review committee using established AHA criteria; subjects with history of CAD (stent placement, bypass) were excluded. Results : Among 368 patients with acute chest pain (mean age 53±12 years, 61% male) 31 patients were determined to have ACS (8%). None of the 183 subjects without plaque (50%) had an ACS. Among the remaining 185 subjects (mean age 58.0±11.5 years, 68% male) in whom coronary plaque was detected, patients with ACS had a significantly more plaque (7.2±3.7 vs. 4.2±3.4, p<0.0001 segments) as compared to subjects without ACS. Similar results were seen for calcified plaque and non-calcified plaque (6.5±3.7 vs. 3.6±3.5 segments, p<0.0001; and 3.6±3.2 vs. 1.8±2.2 segments, p<0.0001, respectively). In addition, the rate of ACS increased with the number of major coronary arteries with plaque (1-vessel: 6.8%, 2-vessels: 10.6%, 3 vessels: 30.8%, and 4-vessels: 25%; p<0.01). In contrast, the ratio of non-calcified to calcified plaque was not different between patients with and without ACS (0.68±0.6 vs. 0.54±0.72, p=0.31). Conclusions: The extent of coronary plaque differs between subjects with and without ACS among patients presenting with acute chest pain. Detailed assessment of the extent and composition of coronary plaque may be helpful to assess risk of ACS among patients with acute chest pain but inconclusive initial ED evaluation.

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