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目的：探讨分水岭脑梗塞的病因和ＣＴ特点。方法：根据ＣＴ结果，参考Ｂｉｇａｕｓｓｌｕｖｓｋｇ和Ｋａｓｈｉｈａｒａ二氏分型法。结果：１０４例中，既往有高血压及／或发病时血压升高者７８例，占７５％。其中皮层前型１８例，皮层后型２２例，皮层下型６４例，（内含皮层下前型，上型和外侧型）。首发症状以肢体无力多见，占５４％；１８例皮层前型中，１４例出现偏瘫，占７７．８％。２２例皮层后型中，１５例出现偏瘫，占６８．２％；皮层下型病灶多发，表现复杂。ＣＴ结果显示，皮层前型位于ＡＣＡ／ＭＣＡ交界区，相当额中回：皮层后型位于ＭＣＡ／ＰＣＡ之间以及ＡＣＡ／ＭＣＡ／ＰＣＡ交界区，分别在枕叶和颞顶枕：皮层下型位于ＭＣＡ皮层支与深穿支动脉之间，分布在基底节及侧脑室体旁。结论：本文结果显示分水岭脑梗塞的主要病因可能与高血压有关，临床表现多以偏瘫为主，ＣＴ显示病变主要累及ＡＣＡ、ＭＡＣ和ＰＣＡ分布的交界区，尤其是ＭＣＡ分布的基底节及侧脑室体旁。
Objective: To explore the etiology and CT features of watershed cerebral infarction. Methods: According to the CT results, reference Bigaussluvskg and Kashihara two sub-type method. Results: Among the 104 cases, there were 78 cases with high blood pressure and / or high blood pressure at onset, accounting for 75%. There were 18 cases of pre-cortex, 22 cases of cortex and 64 cases of subcortical (including subcortical anterior, upper and lateral). The first symptom of limb weakness more common, accounting for 54%; 18 cases of prefrontal cortex, 14 cases of hemiplegia, accounting for 77.8%. In 22 cases of cortical posterior type, 15 cases showed hemiplegia, accounting for 68.2%. Subcortical lesions were complicated with complicated manifestations. The results of CT showed that the pre-cortex was located in the ACA / MCA junction with a moderate back: the posterior cortex located between the MCA / PCA and the ACA / MCA / PCA junction in the occipital lobe and temporal roof respectively: MCA between the cortical branch and the deep perforating branch artery, located in the basal ganglia and lateral ventricle body. Conclusion: The results of this study suggest that the major causes of watershed cerebral infarction may be related to hypertension. The main clinical manifestations are hemiplegia. CT showed that the lesions mainly involved the junctional areas of ACA, MAC and PCA distribution, especially the basal ganglia and lateral ventricle with MCA distribution Body side.