静脉性出血性脑梗死磁敏感加权成像的初步研究

目的：探讨磁敏感加权成像（SWI）诊断脑静脉（窦）血栓形成（CVST）并静脉性出血性脑梗死（VHCI）的价值。方法：采用3.0T磁共振SWI序列，回顾性分析经DSA或病理证实的18例VHCI患者的影像学资料，并与病变部位近似的12例单纯性脑出血和8例脑肿瘤伴出血相对照。结果：18例VHCI患者，SWI表现为顶叶皮层或皮层下斑片状低信号，邻近大脑皮层或皮层下可见“线状”或“蚯蚓状”广泛扩张的皮层静脉或髓静脉。12例单纯性脑出血患者，SWI表现为均匀低信号，周围皮层静脉正常或稍减少。8例脑肿瘤伴出血患者，SWI表现为高低混杂信号，其内可见线状低信号小静脉影及斑点状低信号出血灶，周围皮层静脉明显减少。结论：对于顶叶皮层及皮层下出血性病变，SWI能够通过显示病灶邻近皮层扩张的皮层静脉或髓静脉的特殊征象，提高对VHCI的诊断，是常规磁共振成像（cMRI）及磁共振静脉血管成像（MRV）的重要补充。

Preliminary study of susceptibility weighted imaging in venous hemorrhagic cerebral infarction on 3.0T magnetic resonance

Objective: To explore the value of susceptibility weighted imaging(SWI) in the diagnosis of cerebral venous/ve- nous sinus thrombosis combined with venous hemorrhagic cerebral infarction(CVST-VHCI). Methods: The imaging data of the 18 patients with CVST-VHCI proved by DSA or pathology were studied retrospectively on GE 3.0T MR system, and were compared with those of 12 patients with simple cerebral hemorrhage and 8 patients with brain tumor which located in nearly the same region. Result: In the 18 patients...