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- W4383621787 abstract "Abstract Objectives Pre-clinical models of human atherosclerosis are extensively used; however, traditional histological methods do not allow for a holistic view of vascular lesions. We describe an ex-vivo, high-resolution MRI method that allows the 3 dimensional imaging of the vessel for aortic plaque visualization and quantification. Materials and methods Aortas from apolipoprotein-E-deficient ( apoE −/− ) mice fed an atherogenic diet (group 1) or a control diet (group 2) were subjected to 14 T MR imaging using a 3D gradient echo sequence. The obtained data sets were reconstructed (Matlab), segmented, and analyzed (Avizo). The aortas were further sectioned and subjected to traditional histological analysis (Oil-Red O and hematoxylin staining) for comparison. Results A resolution up to 15 × 10x10 μm 3 revealed that plaque burden (mm 3 ) was significantly ( p < 0.05) higher in group 1 (0.41 ± 0.25, n = 4) than in group 2 (0.01 ± 0.01, n = 3). The achieved resolution provided similar detail on the plaque and the vessel wall morphology compared with histology. Digital image segmentation of the aorta's lumen, plaque, and wall offered three-dimensional visualizations of the entire, intact aortas. Discussion 14 T MR microscopy provided histology-like details of pathologically relevant vascular lesions. This work may provide the path research needs to take to enable plaque characterization in clinical applications." @default.
- W4383621787 created "2023-07-09" @default.
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- W4383621787 date "2023-07-08" @default.
- W4383621787 modified "2023-10-14" @default.
- W4383621787 title "High-field magnetic resonance microscopy of aortic plaques in a mouse model of atherosclerosis" @default.
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- W4383621787 doi "https://doi.org/10.1007/s10334-023-01102-1" @default.
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