Nakatsuka M, Mizuno S, Uchida A
Department of Neurosurgery, Chita Kousei Hospital, Aichi-ken, Japan.
Neuroradiology. 2002 Jan;44(1):25-30. doi: 10.1007/s002340100689.
Three-dimensional computed tomographic angiography (CTA) is a noninvasive technique for detecting lesions after acute subarachnoid hemorrhage. We encountered extravasation on CTA, a finding that has not been reported previously. Three patients with saccular aneurysms showed extravasation on CTA performed within 3 h of the onset of hemorrhage, and all three patients died within 2 weeks. At autopsy, the site of rupture of the aneurysm was confirmed in all three cases. There were two patterns of extravasation shown by CTA, which seemed to depend on the direction of rupture. Extravasation on CTA might represent the natural progression of ruptured aneurysm and may indicate a poor prognosis.
三维计算机断层血管造影（CTA）是一种用于检测急性蛛网膜下腔出血后病变的非侵入性技术。我们在CTA上发现了造影剂外渗，这一发现此前未见报道。3例囊状动脉瘤患者在出血发作后3小时内进行的CTA检查显示有造影剂外渗，且所有3例患者均在2周内死亡。尸检时，所有3例均证实了动脉瘤的破裂部位。CTA显示出两种造影剂外渗模式，这似乎取决于破裂方向。CTA上的造影剂外渗可能代表破裂动脉瘤的自然进展，且可能预示预后不良。
