结论脑桥梗死多发生在脑桥中上部的旁正中区域，主要由椎基底动脉狭窄、高血压性基底动脉穿通支闭塞所致。
Conclusions pontine infarctions, which mainly located in mid-upper paramedian pons, are usually due to vertebrobasilar artery stenosis and occlusion of pontine perforating arteries by hypertension.
此外，MRA示除基底动脉和左侧椎动脉外，其它主要大血管均未见狭窄和闭塞；
In addition, MRA showed no stenosis or occlusion of large vessels except basilar artery.
烟雾病是一种进行性双侧颈内动脉末端狭窄或闭塞并在脑基底部出现异常动脉血管网的疾病。
Moyamoya disease is characterized by progressive stenosis or occlusion at the terminal portions of the bilateral internal carotid arteries with arterial collateral vessels at the base of the brain.
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