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• W1832474301 abstract "Both calcification and FDG uptake have been advocated as indicators of atheroma. Atheromas calcify as cells in the lesion undergo apoptosis and necrosis during evolution of the lesion and at the end stage of the lesion. FDG concentrates in lesions due to the relatively dense cellularity in regions of inflammation of active atheromas. This investigation examines the geographic relationship of focal vascular (18)F-FDG uptake, as a marker of atherosclerotic inflammation, to arterial calcification detected by contemporaneous CT.We reviewed PET/CT images from 78 patients who were referred for tumor staging for the presence of vascular (18)F-FDG uptake and vascular calcification. Arterial wall (18)F-FDG accumulation greater than adjacent blood-pool activity was considered inflammation. Arterial attenuation of >130 Hounsfield units was considered calcification. Sites in the ascending and descending aorta, the carotid and iliac arteries, and the coronary territories were examined on the emission, CT, and fusion images on a point-by-point basis. When lesions were seen, we evaluated whether they were overlapping or discrete.The (18)F-FDG arterial distribution was consistent with established atherosclerotic topography, with increased uptake in the thoracic aorta, at the carotid bifurcation, and in the proximal coronary vessels. Arteries typically displayed a patchwork of normal vessel, focal inflammation, or calcification; inflammation and calcification overlapped in <2% of cases. Arterial inflammation preceded calcification, in terms of mean patient age. Coronary inflammation was more prevalent in patients with more cardiovascular risk factors.Vascular calcification and vascular metabolic activity rarely overlap, suggesting these findings represent different stages in the evolution of atheroma." @default.
• W1832474301 created "2016-06-24" @default.
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• W1832474301 date "2005-08-01" @default.
• W1832474301 modified "2023-10-03" @default.
• W1832474301 title "Association of vascular 18F-FDG uptake with vascular calcification." @default.
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• W1832474301 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/16085583" @default.
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