应用容积重建成像三维CT血管造影方法诊断颅内动脉瘤  

Three-dimensional CT angiography with volume rendering for the detection of intracranial aneurysms

作　　者：方兵[1] 蒋定尧[2] 晁明[2] 张德钧[2] 李铁林[1] 

机构地区：[1]第一军医大学附属珠江医院神经外科,广州510282 [2]浙江大学医学院附属第二医院院放射科

出　　处：《中华医学杂志》2003年第21期1867-1870,共4页National Medical Journal of China

摘　　要：目的　研究CT血管造影 (CTA)及容积重建技术 (VR)对颅内动脉瘤的临床应用价值。方法　采用SiemensPlus4SomatomVolumeZoom型容积CT扫描机获得原始图像 ,采用容积重建成像技术 (VR)进行三维重建 ,并辅助运用多轴面重建 (MPR) ,共对 4 5例动脉瘤患者进行了CTA检查 ,其中有 2 5例同时行数字减影血管造影 (DSA)检查 ,2 1例行动脉瘤夹闭术治疗 ,3例行GDC栓塞术 ,其余保守治疗。结果　共诊断 4 5例动脉瘤患者 ,发现动脉瘤 5 9个 ,其中小动脉瘤 (≤ 5mm) 32个。容积重建成像CTA清晰显示颅内动脉瘤、载瘤动脉、动脉瘤的形状和大小及其与邻近结构的解剖关系 ,在部分病例上要优于DSA。结论　容积重建成像CTA是一种可靠、无创的快速诊断颅内动脉瘤的方法 ,为手术提供了详实的影像学资料 ,可帮助制定治疗方案。Objective To evaluate the value of three-dimensional CT angiography (3D-CTA) with volume rendering (VR) for the detection of intracranial aneurysm. Methods Axial CT images were obtained by helical CT scanning on 45 patients with incranial aneurysms, 15 males and 30 females, aged 63.9 (33～79 years). The primitive data were entered into the Silicon Graphics O2 board to be treated. VR technique was adopted to reconstruct 3D-CTA imaging, aided by multiplanar reformation to obtain the total volume of aneurysm. Among the 45 patients 25 underwent DSA simultaneously, 21 underwent clamping of aneurysm, and 3 underwent GDC thrombosis. Results Fifty-nine intracranial aneurysms were detected in 45 patients by 3D-CTA, including 32 small aneurysms(≤5 mm). 3D-CTA with VR well demonstrated aneurysms and provided useful information including the site, shape, size and spatial relationship to the surrounding vessels and bony structures. Conclusion A quick, reliable, and relatively noninvasive diagnostic tool for intracranial aneurysms, 3D-CTA with VR delineates the aneurysmal morphology in detail, and provides useful information for choosing and planning microsurgical or endovascular treatment.

关 键 词：容积重建成像 三维CT血管造影 诊断 颅内动脉瘤 

分 类 号：R739.4[医药卫生—肿瘤]