Saguchi T, Murayama Y, Ishibashi T, Ebara M, Irie K, Takao H, Abe T
Department of Neurosurgery, Jikei University School of Medicine; Japan.
Interv Neuroradiol. 2006 Jan 20;12(Suppl 1):45-8. doi: 10.1177/15910199060120S104. Epub 2006 Jun 15.
A follow-up of the embolized cerebral aneurysm with Guglielmi Detachable Coils (GDC) were performed mainly using craniograms and digital subtraction angiograms (DSA) so far.Recently, several authors have reported about efficacy of the time of flight (TOF) magnetic resonance angiogram (MRA) as a follow-up for the embolized cerebral aneurysms. In our institution, 3-D reconstructed TOF MRAs have been performed as a follow-up of the embolized cerebral aneurysms.We examined efficacy of 3-D reconstructed TOF MRA. 3-D TOF MRA was performed for a followup of the embolized cerebral aneurysms at our outpatient clinic in 35 patients. Morphological examination of the 3-D images between 3-D TOF MRA and 3-D DSA was performed. Almost similar images of 3-D MRA were obtained after 3-D reconstruction as compared with those of 3-D DSA. In three cases, recanalization was suspected in the 3-D TOF MRA. And recanalization was confirmed in the 3-D DSA actually. A quality of 3-D TOF MRA for a diagnosis of recanalization was good and practical. However, in two cases, arteries were partially disappeared in the 3-D TOF MRA.These were the artifact due to coil mass and this is a current limitation of 3-D TOF MRA. The images of 3-D TOF MRA that were reconstructed in the 3-D workstation were very similar to those of 3-D DSA. 3-D reconstructed TOF MRA was very useful for a less-invasive diagnosis of a recanalization of the embolized cerebral aneurysms.
迄今为止，主要使用颅骨平片和数字减影血管造影（DSA）对用 Guglielmi 可脱性弹簧圈（GDC）栓塞的脑动脉瘤进行随访。最近，几位作者报道了时间飞跃（TOF）磁共振血管造影（MRA）作为栓塞脑动脉瘤随访手段的有效性。在我们机构，已采用三维重建的 TOF MRA 对栓塞的脑动脉瘤进行随访。我们研究了三维重建 TOF MRA 的有效性。在我们门诊，对 35 例患者的栓塞脑动脉瘤进行三维 TOF MRA 随访。对三维 TOF MRA 和三维 DSA 的三维图像进行形态学检查。三维重建后获得的三维 MRA 图像与三维 DSA 图像几乎相似。在 3 例患者中，三维 TOF MRA 怀疑有再通情况。而实际上三维 DSA 证实了再通。三维 TOF MRA 用于诊断再通的质量良好且实用。然而，在 2 例患者中，三维 TOF MRA 中动脉部分消失。这些是由弹簧圈团块导致的伪影，这是当前三维 TOF MRA 的一个局限性。在三维工作站重建的三维 TOF MRA 图像与三维 DSA 图像非常相似。三维重建的 TOF MRA 对于栓塞脑动脉瘤再通的微创诊断非常有用。
