View clinical trials related to Plaque, Atherosclerotic.
Filter by:To assess the feasibility of CT-derived computed fractional flow reserve (FFRCT), wall shear stress and total plaque force on coronary atherosclerotic plaque and to collect the preliminary data to apply those parameters for the prediction of clinical outcomes in patients with coronary artery stenosis.
Biofilm has been identified as the major bacterial phenotype contributing to atherosclerosis. It has become very important to evaluate atherosclerosis and the role of biofilm using advanced technologies. It is also important to understand wound biofilm at a genetic and a molecular level.
The possibility to identify the risk of rupture of a carotid plaque will have tremendous impact in clinical decision making. A vulnerable plaque is considered to have a large lipid rich necrotic core (LRNC), a thin fibrous cap, the presence of inflammatory cells, intraplaque haemorrhage and/or neovascularisation (vasa vasorum). The investigators aim to validate imaging of plaque vulnerability with histology. Previous studies have evaluated the use of imaging to assess carotid plaque vulnerability, mostly showing a good correlation between imaging and histology and/or clinical characteristics. However, they have focused on single modalities, (magnetic resonance imaging [MRI], multidetector-row computed tomography (MDCT), ultrasonography (US) or transcranial Doppler (TCD), and have used relatively small cohorts The primary goal of this study is to investigate whether there is a correlation between neovascularisation in the carotid atherosclerotic plaque as observed with 3.0 Tesla dynamic contrast-enhanced MRI and histology. Moreover, the investigators aim to investigate the correlation between the volume of the LRNC as determined by dual-energy CT and histology. Secondly, the investigators will investigate the correlation between the volume of the LRNC, the fibrous cap status and the volume of the calcifications determined by MRI versus histology, the correlation between number of microembolisms and fibrous cap status and the correlation between the deformation pattern seen with ultrasound and the volume of the LRNC. The imaging parameters showing good correlation with plaque vulnerability characteristics can be used for further analysis in assessing the vulnerable plaque
The purpose of this study is to investigate the antiatherogenic effect of GSPE in clinical use
Gingival inflammation has been associated with cardiovascular diseases, including heart attack and stroke, because of elevation of blood risk markers such as cholesterol, glucose and C reactive protein. The treatment of gingival diseases decreases the concentration of these risk factors in the blood of cardiovascular patients.
The present study aims at assessing the ability of 68Ga-NODAGA-RGD PET/CT for the detection of inflammatory atheromatous plaques in the carotid arteries, compared to 18F-FDG PET/CT, MRI and US and to determine the contribution of each imaging technique. Current gold standard for inflammation is histopathology. Hypothesis : 68Ga-NODAGA-RGD might give a better initial evaluation of patients with atheromatous plaques in the carotid artery eligible for endarterectomy.
Comparison of Fractional Flow Reserve versus instant Wave-Free Ratio for assessment of coronary artery stenosis severity in routine practice - To compare FFR to iFR in arbitrary consecutive patients referred for percutaneous coronary intervention (PCI). - To investigate the influence of hyperemia on iFR. - To test reproducibility of iFR and FFR.
This is a single-centre prospective trial with 140 patients employing [18F]-fluorodeoxyglucose positron emission computed tomography (FDG PET/CT) and advance motion correction and image fusion algorithms to create motion frozen displays and quantify FDG-uptake and thus inflammatory activity in atherosclerotic plaques in the coronary tree. Four groups of patients, two with stable coronary artery disease and two with acute coronary syndrome will be compared and the results of FDG PET/CT will be correlated to results of invasive coronary angiography, intravascular ultrasound / virtual histology, patient risk profile and serum markers of inflammation. The investigators hypothesize that increased FDG accumulation in atherosclerotic plaques shows a positive correlation with inflammatory activity in coronary plaques and markers of plaque vulnerability as well as the risk profile of the patients and serum markers of inflammation. The investigators furthermore hypothesize that FDG PET/CT is able to detect high risk patients and provide an important means for risk stratification and optimization of patient management.
- Fimasartan will be more beneficial in stabilizing the plaque vulnerability compared to control group in deferred coronary lesions. - Fimasartan will be more beneficial in reducing total plaque volume compared to control group in deferred coronary lesions. - Fimasartan will be more beneficial in reducing functional impairment of stenotic lesions (assessed by FFR:Fractional Flow Reserve) in deferred coronary lesions.
The hypothesis is that switching calcium based phosphate binders to sevelamer carbonate will be associated with less inflammation including less atherosclerotic plaque inflammation (inflammation of the vessel walls).