In comparison with DSA, MRA could accurately show the stenosis or occlusion of cerebral arteries and tortuous collateral circulation.
与DSA对比，MRA能够准确地显示闭塞或狭窄的大血管和代偿的不成形的弯延扭曲的侧支血管网。
To observe the ratio and distribution of the involved arteries and the condition of collateral circulation in acute cerebral infarction after the first attack.
目的 观察急性脑梗死患者首次发病时的脑血管狭窄病变比例、分布及其侧支循环状态。
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