颈动脉体瘤多层螺旋CT血管成像的诊断价值  

Carotid Body Tumor:Diagnostic Value of MSCT Angiography

作　　者：周建军[1] 周康荣[1] 陈祖望[1] 王建华[1] 曾蒙苏[1] 

机构地区：[1]复旦大学附属中山医院放射科

出　　处：《放射学实践》2006年第12期1225-1228,共4页Radiologic Practice

摘　　要：目的：分析颈动脉体瘤多层螺旋CT血管成像（MSCTA）的表现，评价其临床诊断价值。方法：搜集经手术病理证实的颈动脉体瘤17例，术前均行多层螺旋CT血管成像，注射流率采用4ml／s，有效层厚为1．3mm，获得的容积数据进行最大密度投影重组和客积重组。将CT扫描结果与手术病理结果作回顾性对照分析。结果：17例颈动脉体瘤中，右侧9例，左侧8例；按照Shamblin分型，Ⅰ型3例，Ⅱ型5例，Ⅲ型9例。肿瘤最大径2．3～9．7cm，平均4．6cm；16例显示颈动脉分叉夹角增大，角度48°～75°，平均67°，1例Shamblin Ⅲ型颈动脉夹角显示不清。平扫显示肿瘤呈等密度或略高密度，增强显示病灶强化迅速而显著，15例病灶内可见肿瘤滋养血管。结论：颈动脉体瘤主体多位于颈动脉分叉内，倾向于围绕颈总动脉和颈内、外动脉生长；肿瘤富含滋养血管和引流静脉，强化迅速、显著、不均匀。MSCTA不仅是颈动脉体瘤的有效诊断手段，而且可显示肿瘤大小、部位、范围以及血管累及程度，有利于指导手术方案的确定。Objective：To explore the MSCTA findings and clinical value for diagnosis of carotid body tumor. Methods.. 17 carotid body tumor patients underwent MSCT angiography with injection rates of 4ml/s and the collimation of 1.3mm before operations. All the patients were confirmed by surgical pathology in the end. The acquired volume data underwent the three-dimension reconstruction of maximum intensity projection （MIP） and volume rendering （VR）. The CT date were reviewed and analyzed retrospectively in correlation with surgical and pathological results. Results： 9 of 17 lesions were located in the right carotid artery, 8 in the left. 3,5,9 of 17 carotid body tumor was classified as shamblin Ⅰ , shamblin Ⅱ and shamblin Ⅲ type respectively. The diameter of the tumors was 2.3-9.7cm,with a mean diameter of 4.6cm. The angle of the common carotid bifurcation was enlarged （48°- 75°）, with a mean angle of 67°. Early and obvious opacification with nourish arteries were seen on contrast enhanced images. Conclusion：The tumor size, extent,location, the dilated angle of the common carotid bifurcation, early obvious opacification with nourish arteries, surrounding vessels involvement can well demonstrated by MSCT, MSCTA not only can support the diagnose, but also provide the data for surgical planning.

关 键 词：颈动脉体瘤 体层摄影术 X线计算机 CT血管成像 

分 类 号：R739.91[医药卫生—肿瘤]