摘要
目的:探讨十二指肠乳头旁憩室(PAD)的CT、MRI特点及其诊断价值.材料和方法:搜集CT、MRI和MRCP检查发现的PAD 21例,男8例,女13例,平均年龄59.1岁.CT检查采用平扫加三期增强扫描,5~10mm层厚.MRI检查轴位T1WI使用FSPGR序列,T2WI使用FSE+Fat SAT序列,冠状位T2WI使用FIESTA序列.MRCP采用SS-FSE序列厚层单次投射法.结果:21例PAD直径为1.6~5.2cm,CT、MRI表现为十二指肠环内侧与胰头间类圆形气泡影,内可见气液面或网状影,甚至全部为液体充填.MRCP显示胆总管下段受压,肝外胆管扩张或胆胰管开口于PAD,胆胰管均有扩张.结论:PAD有典型的CT、MRI表现,MRCP可进一步观察PAD与胆胰管关系,对PAD综合征的临床诊断很有帮助.
Purpose: To study the signs and value of CT and MRI in periampullar diverticula(PAD). Materials and Methods: Twenty-one cases of PAD who were finded by CT, MRI and MRCP came into the study,male 8 ,female 13 ,mean age 54.1 yeas old. CT examination used common scan and three period contrast scan, slice thick 5 - 10mm. MRI examination used T1WI FSPGR, T2WI FSE + Fat SAT and FIESTA. MRCP used SS-FSE, thick single projection. Results: Twenty-one cases of PAD, which lesions ranged in diameter from 1.6 cm to 5. 2 cm, CT and MRI manifested between duodenum and pancreatic head as a hemicycle lesion with gaseous density,which had a air-fliud level or netting image, fulling of fliud indeed. MRCP showed that the lower segment of common bile duct was oppressed, outside liver bile duct expanded or pancreatic-bile duct opened the mouth to PAD, pancreatic-bile duct dilated. Conclusion: PAD has typical feature at CT and MRI, MRCP could observe the PAD and pancreatic-bile duct's relations further, very helpful for the clinical diagnosis of PAD syndrome.
出处
《中国医学影像学杂志》
CSCD
2006年第3期205-208,共4页
Chinese Journal of Medical Imaging