目的 探讨64排128层CT颅脑CT 血管成像(CTA)诊断颅内动脉瘤的临床价 值。方法 收集2012年1月-2015年7月我院 经手术证实为颅内动脉瘤的112例患者的 临床资料，所有患者入院后均已接受CTA 检查，且影像学资料完整，总结颅内动 脉瘤CTA影像学特点，评估其诊断价值。 结果 112例患者，CTA检出110例，2例阴 性，阳性率为98.21%；CTA数据采集所需 时间为(3.8±0.3)s，图像重建时间为 (10.1±0.5)min；112例动脉血管瘤中， 检出动脉瘤125个，动脉瘤多发10例，载 瘤动脉：前交通动脉50个，后交通动脉41 个，椎动脉1个，大脑中动脉23个，颈内 动脉9个，小脑下动脉1个，2个动脉瘤漏 诊；形态：27个为梭形，80个呈囊状，14 个呈不规则表现，1个为夹层动脉瘤。结 论 64排128层CTA可清晰显示颅内动脉瘤 大小、形态及特点，准确测定瘤体直径， 且检查时间短，费用低廉，配合后处理技 术，可明确动脉瘤与载瘤动脉、血管解剖 关系，为术前评估提供参照，可将CTA作 为颅内动脉瘤筛查的首选方式。

Objective To investigate the clinical value of 64-row 128-slice brain CT angiography (CTA) in the diagnosis of intracranial aneurysm. Methods The clinical data of 112 patients diagnosed with intracranial aneurysm confirmed by operation in our hospital between January 2012 and July 2015 were collected. All patients underwent CTA after admission, and the imaging data were complete. The CTA imaging findings of intracranial aneurysms were summarized, and the diagnostic value was evaluated. Results Of the 112 cases of patients, CTA detected 110 cases, and 2 cases were negative. The positive rate was 98.21%. The time required for CTA data acquisition was (3.8±0.3)s, and the image reconstruction time was (10.1±0.5)min. In 112 cases of arterial hemangiomas, 125 arterial aneurysms and multiple aneurysms in 10 cases were detected. In parent arteries, there were 50 anterior communicating arteries, 41 posterior communicating arteries, 1 vertebral artery, 23 middle cerebral arteries, 9 internal carotid arteries and1inferior cerebellar artery. 2 aneurysms were missed diagnosed; In terms of shape, 27 were spindle-shaped, 80 were cystic, 14 were irregular and 1 was dissecting aneurysm. Conclusion 64-row rows 128- slice CTA can clearly display the size, shape and characteristics of intracranial aneurysms and accurately determine the diameter of aneurysms. Besides, the examination time is short and cost is low. With the post-processing technique, it can clear the relationship between aneurysms, parent arteries and vascular anatomy, which provides reference for preoperative evaluation. CTA can be used as the preferred method of screening for intracranial aneurysms.