The incidence of AICA formed the loop of AICA near facial root was 83.3%.
小脑前下动脉在面神经根附近形成小脑前下动脉袢，出现率为83.3%。
2
Conclusion Clinical characteristic in ophthalmology of AICA were decreasion of acuity of vision , oculomotor palsy , abducens paralysis and different defect of visual field in side of AICA mainly.
结论 AICA眼部表现主要为患侧眼视力显著下降、不同程度视野缺损、动眼神经麻痹、展神经麻痹等。
3
Magnetic resonance imaging (MRI) on 72-weighted images showed hyperintense lesions in middle cerebellar peduncle, anterior inferior cerebellum, and flocculus corresponding to the distribution of AICA.