颅内深静脉MRV成像研究

MR Venographic Study of the Cerebral Deep Veins

目的:探讨正常人颅内深静脉的MRV的表现。材料和方法:对120例正常人进行T1WI、T2WI、T2WI-FLAIR、DWI磁共振检查,排除颅内疾病后用3D-PC法进行颅内深静脉MRV成像。结果:大脑大静脉(VOG)、大脑内静脉(ICV)、基底静脉(BVR)、丘纹静脉(TSV)的显示率分别为100%、100%、85%、97.5%。VOG按照构成情况分为5型:Ⅰ型,由左右ICV和左右BVR构成(83例);Ⅱ型,由左右ICV和单支BVR构成(19例);Ⅲ型,由左右ICV构成(10例);Ⅳ型,由单支ICV和左右BVR构成(6例);Ⅴ型,由单支ICV和单支BVR构成(2例)。大脑深静脉的引流:BVR引流至VOG106例,引流至ICV4例;ICV120例均引流至VOG;VOG120例均引流至直窦;直窦引流至窦汇65例,引流至右侧横窦39例,引流至左侧横窦16例。结论:MRV是显示颅内深静脉解剖形态的有效无创检查方法。

Purpose： To study the normal MR venographic findings of cerebral deep veins. Materials and Methods： 3 D-PC venography of cerebral deep vein in 120 normal subjects were obtained after intracranial abnormities excluded by conventional MR T1WI, T2WI, T2WI- flair and DWI. Results： The demonstration rates of the vein of Galen （VOG） , the internal cerebral veins （ ICV ） , the basal vein of Rosenthals（BVR） and the thalamostraite vein（TSV） were 100% ,100% ,85% and 97.5% respectively. VOG could be divided into five types according to VOG component： type Ⅰ was composed of bilateral ICV and BVR（83 eases） ,type Ⅱ was of bilateral ICV and single BVR （ 19 cases） ,type Ⅲ was of bilateral ICV（ 10 cases）, type Ⅳ was of single ICV and bilateral BVR （6 cases）, and type Ⅴ was of single ICV and single BVR（2 cases）. BVR drained to VOG in 106 cases and to ICV in 4 cases. ICV joined to VOG in 120 cases. VOG connected with straight sinus in 120 cases. The straight sinus was drained to toreular herrophili in 65 cases, to right transverse sinus in 39 cases and to left transverse sinus in 16 cases. Conclusion： MR venography is a effective and non-invasive method in demonstrating cerebral deep veins.