ABSTRACT
Objective To explore CTA and MRA characteristics of persistent trigeminal artery (PTA)with vascular disease. Methods 54 patients diagnosed as PTA by CTA and MRA were collected retrospectively,whose classification,variation and associated vascular disease were analyzed.Results There were more females than males in 54 patients,whose average age was 59.72±16.32,and the incidence of left ones were higher than that of the right ones.Type Ⅰ of Weon classification was 16 cases (29.63%),type Ⅱ 7 cases (12.96%),typeⅢ 16 cases (29.63%),type Ⅳ 1 1 cases (20.37%),type Ⅴ 4 cases (7.41%).The lateral type of Salas classification was significantly higher than that in the middle type.There were 16 cases (29.63%)with aneurysm,in which 3 cases (18.75%)were rupture.3 cases were with moyamoya disease (5.56%).39 cases (72.22%)were with basilar artery dysplasia.There were 33 cases (61.11%)with the postembryonic cerebral artery.There were 29 cases with cerebral infarction (53.7%),4 cases with cerebral hemorrhage (7.4%),3 cases with subarachnoid hemorrhage (5.5 6%).Cerebral arteriosclerosis with different degrees of stenosis was showed in 1 7 cases (31.48%). 2 cases were accompanied with trigeminal neuralgia (3.7%),and only 1 case was with ocular nerve palsy (1.85%).Conclusion CTA and MRA could be used to display the anatomical features and radiographic classification of PTA ,and also clearly display and evaluate PTA associated with vascular disease.