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本文对１０４例短暂性脑缺血发作（ＴＩＡ）的患者进行了ＣＴ和（或）ＭＲＩ检查，发现脑梗塞２８例（２６．９％），其中５０例颈内动脉系ＴＩＡ患者发现梗塞１９例（３８．０％），５４例椎基底动脉系ＴＩＡ患者发现梗塞９例（１６．７％）。对后组病人拍颈椎片均显示不同的改变，三维多普勒（ＴＣＤ）均显示椎基底动脉痉孪。因此结合文献考虑颈内动脉系的ＴＩＡ病因主要是微栓子，发生脑梗塞率较高，而椎基底动脉系ＴＩＡ病因主要是血管痉挛，发生脑梗塞率低。由于ＴＩＡ患者的脑梗塞率达２６．７％～７７％。故认为，ＴＩＡ的概念除传统的突然发作、持续时间短暂、症状体征在２４小时内完全消失及可以反复发作外，应加上影像学可见脑组织有小的软化灶这一现象，以统一临床与影像学之间的关系。
CT and / or MRI examination of 104 patients with transient ischemic attack (TIA) showed that cerebral infarction in 28 patients (26.9%), of which 50 cases of internal carotid artery TIA patients found 19 cases of infarction (38.0%). Among the 54 patients with vertebrobasilar artery TIA, 9 patients (16.7%) had infarction. The posterior group of patients with cervical spine films showed different changes, three-dimensional Doppler (TCD) showed vertebrobasilar spasm. Therefore, considering the literature consider the cause of TIA of the internal carotid artery is the main micro-emboli, a higher incidence of cerebral infarction, and vertebrobasilar TIA is mainly caused by vasospasm, the incidence of cerebral infarction is low. As TIA patients with cerebral infarction rate of 26.7% ~ 77%. Therefore, the concept of TIA in addition to the traditional sudden onset, short duration, symptoms and signs disappeared completely within 24 hours and can be recurrent episodes, the imaging should be seen with a small soft tissue lesions in the brain this phenomenon to unify the clinical And the relationship between imaging.