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使用材料是100具童尸(♂41,♀59),身长为50—120厘米。1.各脑动脉左右粗细的变化很大,左右等粗的约为半数,在左右不等粗的例数中,以左侧大于右侧的较多。2.大脑动脉环的类型:(1)闭锁型97±1.71%,开放型3±1.71%;(2)对称型23±4.20%,不对称型77±4.20。3.大脑前动脉与前交通动脉的类型:(1)有前交通动脉的88±3.24%,无前交通动脉的12±3.24%;(2)简单型44±4.96%,复杂型56±4.96%。4.大脑后动脉与后交通动脉的类型:(1)大脑后动脉内侧部大于同侧后交通动脉的有72.5±4.45%,(2)大脑后动脉内侧部小于同侧后交通动脉脉的有16.5±3.70%,(3)大脑后动脉内侧部与同侧后交通动脉等大的有11±3.12%。5.岛的出现率:基底动脉有9例,大脑前动脉有7例,小脑上动脉有1例。6.大脑前动脉发出分枝到对侧半球的旁中央小叶及楔前叶的有5例。7.前交通动脉发出胼胝体正中动脉的有8例。8.各脑动脉的核心枝:(1)大脑前动脉发出1条内侧前穿动脉及3—4条外侧前穿动脉;(2)颈内动脉发出2条纹状体内囊动脉;(3)大脑中动脉发出2—3条内侧穿动脉及4—5条外侧穿动脉;(4)脉络膜前动脉发出2—3条纹状体内囊动脉;(5)后交通动脉发出4—5条小枝到灰结节及乳头体等处;(6)大脑后动脉内侧部发出5—7条后穿动脉;(7)大脑后动脉外侧部发出2—3条外侧后穿动脉及3—4条膝状体丘脑动脉。
The material used is 100 children dead (♂ 41, ♀ 59), length 50-120 cm. 1. The left and right cerebral arteries vary greatly in thickness, so roughly about half of the rough, ranging from about the number of cases of rough, to the left more than the right side. 2. Types of cerebral arterial rings: (1) 97 ± 1.71% of occlusive type and 3 ± 1.71% of open type; (2) 23 ± 4.20% of symmetrical type and 77 ± 4.20.3 of asymmetric type. Arterial types: (1) 88 ± 3.24% with anterior communicating artery and 12 ± 3.24% without anterior communicating artery; (2) 44 ± 4.96% with simple form and 56 ± 4.96% with complex form. 4. Types of posterior cerebral artery and posterior communicating artery: (1) The posterior cerebral artery is larger than the ipsilateral posterior communicating artery by 72.5 ± 4.45%; (2) the posterior cerebral artery is smaller than the posterior communicating arterial veins 16.5 ± 3.70%, (3) 11 ± 3.12% of the posterior cerebral artery and ipsilateral posterior communicating artery. 5. Island incidence: 9 cases of basilar artery, anterior cerebral artery in 7 cases, 1 case of superior cerebellar artery. Anterior cerebral artery branches issued to the contralateral hemisphere next to the central lobule and anterior wedge in 5 cases. 7. Former traffic artery issued corpus callosum middle artery in 8 cases. 8. The core branches of each cerebral artery: (1) the anterior cerebral artery sends out 1 medial anterior perforating artery and 3-4 lateral anterior perforating arteries; (2) the internal carotid artery sends out 2 striatal internal capsule arteries; (3) the brain 2-3 middle arteries and 4-5 posterolateral arteries were disseminated in the middle arteries; 2-3 arterial velae of the striatum were disseminated in the anterior choroidal artery; 4-5 branchlets were disseminated to the ashes after posterior communicating artery And the nipple and so on; (6) posterior cerebral artery posterior 5-7 after the issue of arteries; (7) posterior lateral cerebral artery issued 2-3 after the posterolateral arteries and 3-4 of the geniculate body artery.