The development of secondary collaterals can be affected by the degree of luminal stenosis, which is not parallel with plaque burden since the positive remodeling effect for elastic arteries. This study aimed to determine the association of carotid plaque burden with status of secondary collaterals in patients with severe carotid stenosis. We found that patients with poor collaterals had significantly larger Max WT than those with good collaterals (7.29 ±1.15 mm vs. 6.59 ± 0.93 mm; P=0.018) when the plaque is larger than 5.45mm.
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