Imaging of cerebral venous thrombosis
Imaging of cerebral venous thrombosis
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DOI：
10.1016/j.diii.2014.10.006
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发表时间：
2014-12-01
影响因子：
5.5
通讯作者：
Bonneville, F.
中科院分区：
文献类型：
--
作者：
Bonneville, F.
脑静脉血栓形成（CVT）是一种可能危及生命的紧急情况。临床症状的广泛性使得“切片”成像的使用对于诊断变得更加重要。 CT 和 MRI 均用于诊断静脉窦闭塞，但 MRI 在检测皮质或深静脉血栓方面优于 CT。 CT可显示自发性高信号凝块，CT血管造影可显示管腔内缺损。 MRI 还可以检测到这种血栓，其信号随时间变化：在急性期，T2* 为低信号，而 T1 和 T2 可能会出现错误的令人放心的情况；在亚急性期，所有序列（T1、T2、FLAIR、T2*、扩散）均呈高信号。 MRI 很容易显示 CVT 病例中脑实质的缺血性损伤，甚至出血性损伤。最后，影像学可以揭示 CVT 起源的病理，例如颅骨骨折、感染、肿瘤、硬脑膜瘘或颅内低血压。 (C) 2014 年法语版放射学。由 Elsevier Masson SAS 出版。版权所有。
Cerebral venous thrombosis (CVT) is a potentially life- threatening emergency. The wide ranging of clinical symptoms makes the use of imaging in "slices" even more important for diagnosis. Both CT and MRI are used to diagnose the occlusion of a venous sinus, but MRI is superior to CT for detecting a clot in the cortical or deep veins. CT can show the hyperintense clot spontaneously and CT angiography the intraluminal defect. MRI also detects this thrombus, whose signal varies over time: in the acute phase, it is hypointense in T2*, whilst T1 and T2 can appear falsely reassuring; in the subacute phase, it is hyperintense on all sequences (T1, T2, FLAIR, T2*, diffusion). MRI easily shows the ischemic damage, even hemorrhagic, in the cerebral parenchyma in cases of CVT. Finally, imaging may reveal pathology at the origin of the CVT, such as a fracture of the skull, infection, tumor, dural fistula, or intracranial hypotension. (C) 2014 Editions francaises de radiologie. Published by Elsevier Masson SAS. All rights reserved.