磁共振成像对肿瘤患者合并脑静脉畸形的诊断价值  

Diagnostic value of MRI to patients with tumor combined with cerebral venous malformation in patients with tumor

作　　者：廖江[1] 陈韵彬[1] 陈加优[1] 陈英[1] 李伟宁[1] 

机构地区：[1]福建省肿瘤医院放射诊断科,福建福州350014

出　　处：《中国医药导报》2009年第32期51-53,共3页China Medical Herald

摘　　要：目的:探讨磁共振各种成像序列对肿瘤患者合并脑静脉畸形(cerebral venous malformation,CVM)的诊断价值。方法:回顾性分析19例肿瘤患者合并CVM的磁共振平扫、弥散加权成像(DWI)、增强扫描及其中3例扰相梯度回波加权成像(T2*)、2例磁敏感加权成像(SWI)、2例磁共振血管成像(MRA)的表现,分别评价其对肿瘤患者合并CVM的显示价值。结果:额叶11例,枕叶5例,顶叶、颞叶及小脑半球各1例,发现CVM20个。MRI平扫17个CVM可见引流静脉显示,10个CVM见扩张髓静脉区异常信号。MRI增强扫描后,20个CVM的引流静脉及扩张髓静脉均明显强化,其中,16个呈特征性的"海蛇头"征,2例合并脑转移瘤。MRA仅显示1例粗大引流静脉,扩张髓静脉均未见显示。T2*与SWI发现2例CVM合并海绵状血管瘤,1例合并出血。结论:各种磁共振成像序列相结合能明确诊断肿瘤患者合并CVM。Objective： To evaluate the diagnostic value of different MRI sequences to patients with tumor combined with cerebral venous malformation （CVM）. Methods： The DWI, pre- and post-contrasted MRI features in 19 tumor patients with CVM, and T2^＊ features in 3 of the 19 patients, SWI features in 2 of the 19 patients, MRA features in 2 of the 19 patients, were retrospectively analyzed. An evaluation of displaying the CVM in tumor patients with each technique was made. Resuits： 20 CVM were found in 19 cases. 11 eases were located in frontal lobe, 5 eases in occipital lobe and 3 eases in parietal lobe, temporal lobe and cerebella. On pre-contrasted MRI, the draining veins of 17 CVM and abnormal signal in the dilated medullary areas of 10 CVM were demonstrated. Post-contrasted MRI displayed the markedly enhanced draining veins and medullary veins in all 20 CVM. The typical ＂caput medusae＂ was presented in 16 of the 20 CVM. Two cases accompanied with cerebral metastasis. MRA revealed a dilated draining vein in 1 ease and no medullary veins were shown. T2^＊ and SWI revealed 2 eases accompanied with cavernous hemangioma, 1 ease accompanied with bleeding. Conclusion： Accompaniation with different MRI sequence can clearly diagnose CVM in patients with tumor.

关 键 词：磁共振成像 肿瘤 脑 血管畸形 

分 类 号：R445.2[医药卫生—影像医学与核医学]