脑静脉畸形的MRI诊断

目的探讨MRI对脑静脉畸形（CVM）的诊断价值。方法收集我院9例CVM患者资料进行回顾性分析。3例行CT平扫检查,9例行MRIT1WI、T2WI、T2FLAIR、T1WI增强扫描,其中有3例行3DTOFMRA扫描,2例行VENBOLDSENSE扫描。结果 CVM位于幕下5例,幕上4例。3例CT平扫均未见CVM直接征象,其中2例发现异常病灶,1例未见异常。5例MRI平扫显示髓静脉呈长T1长T2信号,中央静脉干呈长T1短T2信号或长T1长T2信号,FLAIR上髓静脉为稍高信号,中央静脉干为稍低信号或稍高信号,增强呈典型的＂水母＂征或＂树根＂征表现。2例MRI平扫显示条管状流空低信号,增强呈条状高信号。1例MRI平扫显示类圆形等长T1、等长T2信号,中心可见流空信号。增强MRA显示髓静脉呈放射状汇入中央静脉并见引流入上矢状窦。1例术前只诊断为血管畸形,未能明确分型。结论 MRI多序列成像对脑静脉畸形绝大多数可明确诊断,MRI增强及VENBOLDSENSE序列是发现脑静脉畸形最敏感的方法,应做为CVM的首选检查方法。

MRI diagnosis of cerebral venous malformation (CVM)

Objective To investigate the value of MRI in diagnosis of cerebral venous malformation (CVM). Methods 9 cases in our hospital patients with CVM data were analyzed retrospectively. 3 routine CT scan examination, 9 routine MRI T1WI, T2WI, T2FLAIR, T1WI enhanced scan, of which three routine 3D TOF MRA scans, two routine VEN BOLD SENSE scan. Results 5 cases were the infratentorial, 4 cases of supratentorial. 3 cases CT scan showed no direct signs of CVM, including two cases of unusual lesions, 1 case was normal...