永存枕窦和永存镰状窦的MR诊断  

MRV Diagnosis of Persistent Occipital Sinus and Persistent Falcine Sinus

作　　者：司建荣[1] 田锦林[2,3] 肖越勇[2] 张雅丽[1] 姜兆侯[1] 

机构地区：[1]广东省佛山市南海区中医院放射科,528200 [2]解放军总医院放射科,北京100853 [3]解放军252医院介入血管外科,河北省保定市071000

出　　处：《临床放射学杂志》2010年第12期1600-1603,共4页Journal of Clinical Radiology

摘　　要：目的探讨永存枕窦(persistent occipital sinus,POS)和永存镰状窦(persistent falcine sinus,PFS)的MRI表现。资料与方法搜集100名正常成人冠状位二维时间飞跃法(2D-TOF)颅内MR静脉成像资料,统计观察POS和PFS的MRI表现及其发生率。结果 POS是连接窦汇区与乙状窦远端或颈内静脉起始端的硬脑膜内血管,行径、数量、管径和形态变化较大,发生率为5%;PFS是连接上矢状窦后份与大脑大静脉或下矢状窦后端的大脑镰内血管,仅1支,行径相对恒定,管径和形态有差异,发生率为4%。结论 POS和PFS是常见的静脉变异,是某些病理情况下重要的静脉引流通道。Objective To investigate MRV manifestations of the persistent occipital sinus(POS)and the persistent falcine sinus(PFS).Materials and Methods In 100 normal persons(56 males,44 females,aged 9-69 years,mean age 45.1 years),two dimension time of flight MR angiography(2D-TOF MRA)were performed in coronal plane.Special attention was paid to MRV features of POS and PFS.Results Five cases of POS and 4 cases of PFS were seen on the MRV images.POS was a vascular channel which connected the torcular area with the end of sigmoid sinus or the begining of internal jugular vein.The route,size,number and shape of POS were variable.PFS was a vascular channel which connected the posterior portion of the superior sagittal sinus with the caudal end of the inferior sagittal sinus or the vein of Galen.PFS was solitary and its route was constant relatively,but its size and shape were variable.Conclusion POS and PFS are common variation of the intracranial veins.Under certain pathological conditions,they may function as important collateral pathways for the venous drainage.

关 键 词：永存枕窦 永存镰状窦 磁共振血管成像 变异 

分 类 号：R445.2[医药卫生—影像医学与核医学]