硬膜窦血栓形成的MRI表现(附6例分析)

目的：探讨硬膜窦血栓形成的ＭＲＩ表现。方法：６例硬膜窦血栓形成，均做了ＭＲＩ检查，其中２例用了ＳＴＩＲ，１例用了ＦＬＡＩＲ序列，３例作了增强检查（Ｇｄ－ＤＴＰＡ），５例作了ＭＲＶ。结果：右横窦栓塞２例，左横窦１例，上矢状窦３例，脑肿胀５例，静脉性脑栓塞２例，脑血肿１例。增强检查，脑皮质及皮质静脉增强１例。结论：ＭＲＩ对硬膜窦血栓形成的诊断有独特的价值。硬膜窦流空信号消失和硬膜窦狭窄、闭塞是直接征像。脑肿胀、静脉性脑梗塞、脑血肿是间接征像

MRI Findings of Dural Sinus Thrombosis(An Analysis of 6 Cases)

Objective:To study the MRI findings of dural sinus thrombosis.Methods:6 cases of dural sinus thrombosis were examined by MRI.STIR and FLAIR techniques was used separately in 1 and 2 cases.Contrast-enhanced studies(Gd-DTPA)were given in 3 cases.MRV was performed in 5 cases.Results:Right transversal sinus was stenosis in 2 cases,The blocked sagittal sinus was seen in 3 cases,left transversal sinus was completely occluded in 1 cases,venous infarction was in 2 cases, brain swelling was in 5 cases,hematoma with mass effect was in 1 case.The cortex and cortical venous were enhancd in 1 case.Conclusion:The value of MRI for the diagnosis of dural sinus thrombosis is considered to be unique.Dural sinus signal void disappeared and dural sinus stenosis on MRV are direct features.Brain swelling,venous infarction and hematoma are indirect features.