目的：观察动脉硬化模型兔腹主动脉血流频谱，探讨超声多普勒检查诊断早期动脉硬化的局限性。
Objective: To assess the limitation of Doppler spectra in evaluating early arteriosclerosis by observing aortic flow spectra in rabbit models.
而且她们细小的冠状动脉血管，就是主动脉树上的分枝，在需要的时候很难被扩大，更加限制了血流。
What's more, their smaller coronary arteries-the twigs on the arterial tree-can fail to dilate when they should, further restricting blood flow.
研究者使用高分辨率超声测量颈动脉和主动脉壁厚度以及肱动脉血流调控舒张功能。
Researchers used high-resolution ultrasound to measure carotid and aortic arterial wall thickness and brachial artery FMD.
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