环状胰腺的螺旋CT诊断  

MSCT diagnosis of annular pancreas

作　　者：唐永强[1] 李蕊[2] 李剑[1] 宦怡[1] 张劲松[1] 

机构地区：[1]第四军医大学西京医院放射科,陕西西安710032 [2]第四军医大学西京医院心内科,陕西西安710032

出　　处：《实用放射学杂志》2012年第9期1380-1383,共4页Journal of Practical Radiology

摘　　要：目的 探讨螺旋CT在诊断成人型环状胰腺的应用价值.方法 回顾分析7例病人的临床资料及CT影像特点,CT采用常规平扫及多期增强扫描,3例均行CT平扫及增强扫描,其余4例直接增强扫描,螺旋扫描后薄层重建传至三维工作站,采用多平面重建（MPR）、曲面重建（CPR）、最小密度投影（MinIP）等三维重建方法观察胰腺,详细分析其影像学表现及特点.最终诊断由2位高年资医师盲法观察、共同作出.结果 环状胰腺的CT直接征象为胰头增大变形,环形包绕十二指肠降段（6例）,钳状包绕十二指肠降段（1例）,相应十二指肠管腔结构消失或缩窄,胰头内见副胰管（5例）.间接征象包括被包绕十二指肠近端扩张（6例）,胆道扩张（3例）,十二指肠壁增厚（1例）,合并胆囊炎（4例）.结论 CT是诊断环状胰腺的一种准确可靠的影像学方法.Objective To evaluate the value of CT in diagnosing aduh annular pancreas . Methods CT and clinical data in seven adult patients with annular pancreas were retrospectively analyzed. All cases underwent contrast enhanced CT and the images were carried out with three dimentional reconstruction including MPR, CPR and MinIP. CT findings were reviewed by two radiologists blindly,and the consensus agreement of the final diagnosis was reached. Results The direct CT findings of annular pancreas included enlarged and deformed head of pancreas,complete（6 cases） and in-complete（1 case） ring of pancreatic tissue surrounding the second parts of the duodenum, in which, the structures of duodenum diappreared or showed stricture, the accessory pancreatic duct presented within the peacreatic head（6/7）. The indirect CT signs included expansion of the near end of the duc）denum（ 6 cases）, thickened duodenum wall（ 1 case） and in combination with cholecystitis（4 cases）. Conclusion CT plays a pivotal role in the diagnosis of annular pancreas in adult patients.

关 键 词：胰腺 环状胰腺 体层摄影术 X线计算机 

分 类 号：R576[医药卫生—消化系统] R814.42[医药卫生—内科学]