脑静脉血管瘤16层螺旋CT及CTV诊断

目的:探讨16层螺旋CT和CTV对脑静脉血管瘤的诊断价值.方法:回顾性分析10例脑静脉血管瘤的16层螺旋CT平扫、CTA及CTV表现.结果:4例脑静脉血管瘤CT平扫表现为条状或点状略高密度影,1例伴发出血仅发现呈高密度的小脑血肿影,另5例CT平扫未见明显异常.5例动脉期CT血管扫描(CTA)未发现明显异常,5例病灶仅部分显示,且密度淡.10例CTV均清晰显示放射状排列的髓静脉及中央静脉,整个形态似海蛇头.结论:CT平扫对脑静脉血管瘤的诊断价值有限,静脉期的16层螺旋CT血管扫描(CTV)能清晰显示脑静脉血管瘤的影像特征,是诊断本病的可靠方法.

16-detector-row Multi-slice CT and CT Venography in the Diagnosis of Cerebral Venous Angioma

Objective:To evaluates the 16-row detector multi-slice CT (MSCT) and MSCT venography (MSCTV) in the diagnosis of cerebral venous angioma.Methods:The imaging data of MSCT were retrospectively analyzed in 10 cases with cerebral venous angioma (CVA).Results:On pre-contrast CT,4 lesions manifested as linear or spotty slightly hyper-attenuation,in one lesion located in right cerebellum accompanied with hemorrhage only high density hematoma was shown.No positive findings were displayed on pre-contrast CT in the remaining 5 patients.On CT arterial phase (CTA),only slightly increased attenuation was displayed in part of the lesion in 5 cases.While on CTV phase,medullary vein and central vein could be detected in all cases with radiated arrangement and assimilated to a "Caput Meduse".Conclusion:Pre-contrast CT had limited value in the diagnosis of CVA.Characateristic features of CVA could be clearly showed on MSCTV using 16 row-detector spiral CT,which is a reliable diagnostic technique for this disease.