动脉瘤样骨囊肿CT与MRI征象分析  

Sign of aneurysmal bone cyst on CT and MR imaging

作　　者：曾效力[1] 陈卫国[1] 邓凤贤[2] 樊长姝[3] 

机构地区：[1]南方医科大学附属南方医院放射科,广东广州510515 [2]广州中医药大学附属佛山中医院,广东佛山528000 [3]北京世纪坛医院,北京100038

出　　处：《中国医学影像技术》2007年第5期744-747,共4页Chinese Journal of Medical Imaging Technology

摘　　要：目的探讨CT与MRI对动脉瘤样骨囊肿(ABC)的诊断价值。方法回顾性分析43例经手术病理证实的动脉瘤样骨囊肿的影像表现,全部病例均行X线检查,其中14例行CT检查,19例行MRI检查,10例同时行CT及MRI检查。结果在X线上ABC表现为膨胀性骨质破坏。在CT上动脉瘤样骨囊肿表现为溶骨性骨质破坏,常有不同程度膨胀性改变,骨质破坏区内可见囊状低密度区及骨性分隔,MRI表现为T1WI及T2WI上可见病灶边缘有低信号环,病灶内主体部分充满囊状液体,信号混杂,在T1WI低或中高信号,在T2WI上呈不均匀高信号,病灶内可见T1WI及T2WI上均呈低信号的分隔。Gd-DTPA增强扫描后可见囊壁及病灶内的分隔强化。结论CT与MRI对动脉瘤样骨囊肿诊断与鉴别诊断有非常重要的价值。Objective To approach aneurysmal bone cyst display of CT and MRf,and the diagnostic value in this disease. Methods We reviewed 43 cases of aneurysmal bone cyst which had been confirmed by pathology. Fourteen cases were examined by the plain scan of CT, 19 cases were examined by the enhancement scanning of MRI, 10 cases were examined by both the plain scan of CT and the enhancement scanning of MRI. Results On plain radiography,the appearances of the aneurysmal bone cyst were expanding bony destruction. On the plain scan of CT, the appearances of the aneurysmal bone cyst were the various expansile changes. In destruction of bone, the capsular districts and septation can be seen. On MR T1WI and T2WI, we can see the low signal ring of the diseased region borderline, the diseased region bulk was full of fluid which has miscellaneous signals, it can be seen the low or slightly high signal. In the diseased region, the septation which have low signals both on the T1WI and T2WI can be seen. On enhancement scanning, the ring of the diseased region and septation in the diseased region distinctly enhanced. Conclusion CT and MRI are very valuable in diagnosis and differential diagnosis of the aneurysmal bone cyst.

关 键 词：骨囊肿 动脉瘤样 体层摄影术 X线计算机 磁共振成像 

分 类 号：R738.1[医药卫生—肿瘤] R730.44[医药卫生—临床医学]