CT angiography of intracranial aneurysms: advantages and pitfalls
CT angiography of intracranial aneurysms: advantages and pitfalls
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DOI：
10.1016/s0720-048x(97)01160-1
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发表时间：
1997-07-01
影响因子：
3.3
通讯作者：
Wan, YL
中科院分区：
文献类型：
--
作者：
Ng, SH;Wong, HF;Wan, YL
目的：探讨CT血管造影对脑动脉瘤的诊断价值。材料与方法：从1994年10月至1996年4月，26例患者的30个手术证实的颅内动脉瘤同时接受了CT血管造影和导管脑血管造影。这两种方法的研究结果进行了独立的审查，然后相互比较。结果如下：与导管血管造影相比，CT血管造影对7个动脉瘤瘤颈显示上级，但对1个动脉瘤瘤颈显示较差。CT血管造影可清晰显示动脉瘤的血栓形成部分及钙化。CT血管造影也有助于区分紧密的血管环和动脉瘤。在CT血管造影片上，一个后交通动脉瘤被忽略，另一个脉络膜前动脉瘤被误解为后交通动脉瘤。值得注意的是，2例患者的眶额动脉漏斗被误解为前交通动脉瘤。结论：CT血管造影能较好地显示动脉瘤的三维解剖结构，是传统血管造影的补充。它可以提供关于动脉瘤的颈部、钙化和血栓形成部分及其与邻近结构的关系的手术信息。然而，由于CT血管造影可能无法显示小但重要的血管，如后交通：脉络膜前动脉和眶额动脉，因此提倡谨慎。认识到CT血管造影的局限性对于最大限度地减少解释错误非常重要。(C)1997 Elsevier Science爱尔兰有限公司
Objective: To determine the clinical usefulness of computed tomography (CT) angiography in the evaluation of cerebral aneurysms. Materials and Methods: From October 1994 through April 1996, 26 patients with 30 surgical proven intracranial aneurysms underwent both CT angiography and catheter cerebral angiography. The findings of the two methods were reviewed independently and then compared with each other. Results: Comparing with catheter angiography, CT angiography was superior in demonstrating the aneurysmal neck in seven aneurysms but was inferior in one. The thrombosed part and calcification of aneurysms were clearly demonstrated on CT angiograms. CT angiography also aided in differentiating tight vascular loops from aneurysms. On CT angiograms, one posterior communicating arterial aneurysm was overlooked and another anterior choroidal artery aneurysm was misinterpreted as a posterior communicating artery aneurysm. Of note were two patients in whom the infundibulum of the orbitofrontal artery was misinterpreted as the anterior communicating artery aneurysm. Conclusion: CT angiography can compliment conventional catheter angiography for its better demonstration of the 3-dimensional anatomy. It can provide surgical information about the neck, calcification and thrombosed part of an aneurysm and its relation to adjacent structures. However, caution is advocated because CT angiography may fail to demonstrate small but important vessels such as posterior communicating: anterior choroidal and orbitofrontal arteries. Recognition of the limitations of CT angiography is important in minimizing interpretation errors. (C) 1997 Elsevier Science Ireland Ltd.