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目的:探讨多层螺旋CT血管成像在颅内动脉瘤的诊断中的应用。方法:收集经手术证实或DSA的颅内动脉瘤31例,所有的病例均行多层螺旋CT血管成像。CTA通过采取VR、MIP及CPR等后处理重建技术,实现脑内血管重现,展现颅内血管的真实情况。20例行手术治疗,11例行DSA检查。结果:本组31例,共36个颅内动脉瘤。29例单发,2例多发(7个动脉瘤)。MSCTA发现颅内动脉瘤33个,1个动脉瘤误诊;MSCTA正确诊断动脉瘤32个,4个动脉瘤漏诊。MSCTA诊断颅内动脉瘤的准确率为97%(32/33),敏感度为89%(32/36),平均直径为8mm(范围在3～35mm之间)。MSCTA所显示的动脉瘤与手术及DSA所见显示动脉瘤位置、大小、形态基本一致。结论:MSCTA能清楚显示颅内动脉瘤的形态、位置及其与周围的解剖关系,其诊断结果与DSA或/手术诊断符合率相当高,在颅内动脉瘤的诊断中有重要的价值。
Objective: To investigate the application of multislice CT angiography in the diagnosis of intracranial aneurysms. Methods: Thirty-one cases of intracranial aneurysms confirmed by surgery or DSA were collected. All patients underwent multi-slice spiral CT angiography. CTA through the VR, MIP and CPR and other post-processing reconstruction techniques to achieve intracerebral vascular reappearance, showing the true situation of intracranial blood vessels. Twenty patients underwent surgical treatment and 11 underwent DSA. Results: The group of 31 cases, a total of 36 intracranial aneurysms. 29 cases of single, 2 cases of multiple (7 aneurysms). MSCTA found 33 intracranial aneurysms and 1 aneurysm was misdiagnosed. MSCTA correctly diagnosed 32 aneurysms and missed 4 aneurysms. The accuracy of MSCTA in diagnosing intracranial aneurysms was 97% (32/33), with a sensitivity of 89% (32/36) and an average diameter of 8 mm (range 3 to 35 mm). The aneurysms shown by MSCTA were similar to those seen by surgery and DSA in terms of aneurysm location, size, and morphology. Conclusion: MSCTA can clearly show the morphology, location and anatomy of intracranial aneurysms. The diagnostic results are in good agreement with DSA or / and surgical diagnosis, and are of great value in the diagnosis of intracranial aneurysms.