多层螺旋CT血管造影成像对脑动脉瘤的诊断及临床应用价值

目的探讨多层螺旋CT血管造影成像(MSCTA)对脑动脉瘤的诊断及价值。方法MSCTA诊断15例脑动脉瘤,5例行DSA脑动脉造影,2例行电解可脱弹簧圈栓塞治疗。用最大密度投影(MIP)和/或容积投影(VR)法进行血管三维重建,同时行多平面重建(MPR)。结果15例患者中MSCTA发现动脉瘤16个,其中椎动脉2个,基底动脉环5个,大脑前动脉5个,中动脉3个,动脉瘤显示直径3～25mm不等。5例DSA脑血管造影显示4个动脉瘤。CTA三维图像与MPR及原始横断面图像相结合及多角度观察法等对诊断很有帮助。5例行DSA患者CTA所显示动脉瘤位置、大小、是否为峡颈或宽底与DSA结果基本相符。结论MSCTA对脑内动脉瘤显示清晰,三维CTA结合MPR及原始图像可使诊断更准确、客观,为手术或介入治疗动脉瘤提供非常有价值的信息。

Clinical Applied Value of Multi - slice CT Angiography in Diagnosis of Cerebral Aneurysms

Objective To evaluate the diagnostic value of multi-slice CTA(MSCTA) in cerebral aneurysms.Methods 15 patients with cerebral aneurysms were undergone MSCTA,of which,DSA were performed in 5 cases,and Gnglielmi detachable coil were performed in 2 cases . The images of 15 patients were processed with maximum intensity projection ( MIP ) , volume rendering ( VR ) and multiple planar reconstruction ( MPR ) .Results 16 cerebral aneurysms in 15 patients were found by MSCTA , the location of aneurysms was in the vertebral artery in 2,in the cerebral arterial circle in 5,in the anterior cerebral artery in 5 ,and in the middle cerebral artery in 3.DSA displayed 4 cerebral aneurysms in 5. 3D-CTA imaging and MPR combined with original transect images and multi-angle observation wereof great advantageous for diagnosis. The position, size and width of the fundus of cerebral aneurysms in 5 patients displayed by CTA wereaccordant with the results of DSA.Conclusion MSCTA can display cerebral aneurysms clearly. 3D-CTA combined with MPR and original images can make diagnosis more accurate and objective, and provide valuable information for surgery or interventional therapy.