成人烟雾病侧支循环的CT血管成像特点

Collateral circulation characteristics of CT angiography imaging of adult ischemic type moyamoya disease

目的:探讨烟雾病侧支循环形成的CT血管成像特点。方法:收集在医院就诊的120例烟雾病患者影像资料,所有患者均行CT血管成像(CTA),根据侧支循环代偿途径的不同将其分为Ⅰ组(15例),Ⅱ组(53例),Ⅲ组(38例),Ⅳ组(14例)。采用Lightspeed VCT对所有烟雾病患者行头颅CTA检查,评价4组患者的临床表现、烟雾病血管代偿模式以及脑底异常血管网情况。结果:Ⅰ组15例全部为缺血型烟雾病;Ⅱ组53例中缺血型烟雾病8例,出血型烟雾病45例;Ⅲ组38例中缺血型烟雾病7例,出血型烟雾病31例;Ⅳ组14例全部为出血型烟雾病。结论:缺血型烟雾病血管网以迂曲扩张或正常为主,而出血型烟雾病血管网以狭窄为主。烟雾病的类型与侧支循环血管代偿特点有密切关联。

Objective： To explore the characteristics of collateral circulation of moyamoya disease in CT angiography imaging. Methods： Data of 120 moyamoya disease patients diagnosed by the 94 th hospital were collected. All the patients underwent CT angiography imaging and were divided into groups according to compensatory ways of collateral circulation. Lightspeed VCT was used in all patients to conduct CTA check, and assessed the clinical performance of 4 groups. Results： Group 1 consisted of 15 cases（12.5%） of ischemic type moyamoya disease. Group 2 had 53 cases（44.2%）, 8 cases were ischemic type moyamoya disease, and 45 cases were beeding type group moyamoya disease. Group 3 had 38 cases（31.7%）, who showed moyamoya vessel formation in the bottom of the brain, 7 of these cases were ischemic moyamoya disease, and 31 were bleeding type moyamoya disease. Group 4 had 14 cases（11.6%）, all of whom belonged to bleeding type moyamoya disease, characterized by ophthalmic artery, temporal artery, middle meningeal artery, occipital artery communicating with terminal cortex intracranial vascular. Conclusion： Compensatory characteristics of collateral circulation vessels were closely correlated with the types of moyamoya disease.