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ABSTRACT
In order to induce a modified rabbit model of carotid atherosclerotic plaque suitable for the stroke study and to evaluate the lesion with magnetic resonance imaging (MRI). Eight rabbits of group A were fed with high-fat diet only. Atherosclerosis at the right common carotid artery was induced in rabbits of group B (n = 12) by high-fat diet and balloon catheter injury to the endothelium 4 weeks later. The rabbits were examined in vivo with a 1.5-T MRI. After 4 weeks on the high-fat diet, the serum lipid levels were markedly increased, which became significantly higher than the baseline levels. The lesions on both MRI and histology were remarkable. One week after balloon injury, the signal of injured right common carotid was higher on all the contrast-weighted images than the left side. The extent of abnormal signal was reduced 9 weeks after balloon injury. Hemorrhage was detected on all the contrast-weighted images. In conclusion, the rabbit model established by the authors is such a feasible one to the study of stroke caused by carotid atherosclerosis.
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