MSCT后处理技术在脑血管成像中的应用  

Application of postprocessing techniques in MSCT cerebral angiography

作　　者：陈耀华[1] 邱国庆[1] 丁爱民[1] 邓淑珍[1] 胡凌[1] 

机构地区：[1]抚州市第一人民医院放射科,江西344000

出　　处：《放射学实践》2010年第6期609-611,共3页Radiologic Practice

摘　　要：目的:探讨多排螺旋CT血管造影(MSCTA)及后处理技术在脑血管成像中的应用。方法:对临床疑似颅内血管性病变的93例患者行MSCTA检查,所得扫描数据传输到工作站,利用容积重建(VR)和最大密度投影(MIP)技术进行处理,表面遮盖法(SSD)和仿真内镜(CTVE)技术作为辅助手段,其中55例行DSA检查对照,38例与外科手术对照。结果:93例患者共检出脑动脉瘤63个(59例),其中<3 mm的动脉瘤6个,血管畸形15例,烟雾病19例。所有病例经VR、MPR、MIP及CTVE重组处理后能够全面直观地显示动脉瘤的大小、形态、位置,血管与动脉瘤的内部结构,能多方位观察瘤体与载瘤动脉及AVM的供血动脉与引流静脉的解剖关系。结论:多种重组技术联合运用能为脑动脉瘤及血管畸形的诊断提供更多信息,充分显示动脉瘤和血管畸形的解剖结构。Objective：To explore the applicable value of multi-slice spiral CT（MSCT） angiography and postprocessing techniques in cerebral angiography.Methods：Ninety-three patients suspected of intracranial vascular lesions were scanned with MSCT angiography,and then cerebral blood vessel reconstruction was undertaken on work station,including maximum intensity projection（MIP）,multiple planar reformation（MPR）,volume rending（VR）,and with the assistance method of surface shade display（SSD） and CT virtual endoscopy（CTVE）.The results of MSCT angiography in 55 cases were compared with DSA,38 cases were confirmed by surgery.Results：63 cerebral aneurysms were detected from 93 patients,in 6 cases the diameters were smaller than 3mm.There were 15 cases of vascular malformation,and 19 cases of Moyamoya disease.When all the CT source images were postproessed with VR,MPR,MP and CTVE,the recon images could display the size,shape,and location of the aneurysms.The blood vessels and their internal structure of aneurysms could be multi-dimensional observed and the anatomical relationship between the AVM feeding artery and the draining vein can be found as well.Conclusion：The combined application of imaging recon techniques may provide more information for the diagnosis of intracranial aneurysms and vascular malformation,and adequately display the anatomic structure of vascular malformation and aneurysms.

关 键 词：体层摄影术 X线计算机 颅内动脉瘤 血管造影术 图像处理 计算机辅助 

分 类 号：R816.1[医药卫生—放射医学]