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  • Title: Thoracic aorta calcification but not inflammation is associated with increased cardiovascular disease risk: results of the CAMONA study.
    Author: Blomberg BA, de Jong PA, Thomassen A, Lam MGE, Vach W, Olsen MH, Mali WPTM, Narula J, Alavi A, Høilund-Carlsen PF.
    Journal: Eur J Nucl Med Mol Imaging; 2017 Feb; 44(2):249-258. PubMed ID: 27796543.
    Abstract:
    PURPOSE: Arterial inflammation and vascular calcification are regarded as early prognostic markers of cardiovascular disease (CVD). In this study we investigated the relationship between CVD risk and arterial inflammation (18F-FDG PET/CT imaging), vascular calcification metabolism (Na18F PET/CT imaging), and vascular calcium burden (CT imaging) of the thoracic aorta in a population at low CVD risk. METHODS: Study participants underwent blood pressure measurements, blood analyses, and 18F-FDG and Na18F PET/CT imaging. In addition, the 10-year risk for development of CVD, based on the Framingham risk score (FRS), was estimated. CVD risk was compared across quartiles of thoracic aorta 18F-FDG uptake, Na18F uptake, and calcium burden on CT. RESULTS: A total of 139 subjects (52 % men, mean age 49 years, age range 21 - 75 years, median FRS 6 %) were evaluated. CVD risk was, on average, 3.7 times higher among subjects with thoracic aorta Na18F uptake in the highest quartile compared with those in the lowest quartile of the distribution (15.5 % vs. 4.2 %; P < 0.001). CVD risk was on average, 3.7 times higher among subjects with a thoracic aorta calcium burden on CT in the highest quartile compared with those in the lowest two quartiles of the distribution (18.0 % vs. 4.9 %; P < 0.001). CVD risk was similar in subjects in all quartiles of thoracic aorta 18F-FDG uptake. CONCLUSION: Our findings indicate that an unfavourable CVD risk profile is associated with marked increases in vascular calcification metabolism and vascular calcium burden of the thoracic aorta, but not with arterial inflammation.
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