摘要
目的：比较3．0T超高场磁共振2DMRCP及3DMRCP的图像质量及对正常胆胰管系统的显示情况，探讨其临床应用价值。方法：对52例正常人分别行2D及3DMRCP扫描。2DMRCP采用SSFSE序列，小角度多层旋转屏气扫描，3DMRCP采用FRFSE序列，斜冠状面多层单块呼吸门控下扫描。分别判定图像质量（0-3级）、有无伪影（0-3级）及胆胰管显示质量（0-3级）。观察肝内胆管显示情况并分别测量左、右肝管，肝总管，胆总管及主胰管的最大横径。结果：52例受检者中80．6％图像质量达3级，97．9％图像无伪影或伪影很少，2DMRCP图像质量优于3D MRCP。1-3级胆管、胆囊、胆囊管及胆总管在2D和3DMRCP图像中的显示率均为100％。较细小结构如肝内4-5级胆管、主胰管、副胰管及胰管侧支2DMRCP的显示优于3DMRCP。各管径的测量值有较大的变化范围，主胰管的最大横径3DMRCP较2DMRCP宽[（2．78±0．90）min vs（2．37±0．66）min，P〈0．05]。左肝管最大横径较右肝管宽[（3．54±1．02）mm vs（3．08±0．97）mm，P〈0．05]。结论：3．0T超高场磁共振MRCP图像清晰完整，正常胆胰管得到良好显示。
Objective： To assess the ability of 3.0T MR cholangiopancrcalography （MRCP） to depict the normal biliary and pancreatic duct and compare the image quality of 2D MRCP with 3D MRCP. Methods： Fifty-two healthy adults without jaundice underwent 3.0T （GE Signa EXCITE Ⅱ 3.0T） 2D MRCP （SSFSE pulse sequence, 5° 8 - 12 slices, breath-hold） and 3D MRCP （FRFSE pulse sequence, simple block, breath-gating）. The image quality （ grade 0 - 3）, artifact （ grade 0 - 3） and the authenticity of the biliary and pancreatic duct for these two different techniques were investigated by three experienced doctors. The diameter of left and right hepatic duct, common hepatic duct, common bile duct and pancreatic duct were measured at the same time. Results： 80.6% of the images were in good quality （grade 3）, while 97.9% had no or little artifact （grade 0,1）. The image quality of2D MRCP was superior to that of 3D MRCP due to its high scan speed and little effect of breath and gastrointestinal movement artifact. 100% of normal gallbladders, cystic ducts, 1 - 3rd grade hepatic ducts and common bile ducts were shown in both 2D and 3D MRCP. Small ducts, such as 4 - 5th grade hepatic duct, pancreatic duct and accessory pancreatic duct, were shown more dearly in 2D MRCP than in 3D MRCP. There were some variations in the diameter of left and right hepatic duct, common hepatic duct, common bile duct and pancreatic duct, whereas there was no significant difference of these ducts in diameter between 2D and 3D MRCP except for pancreatic duct[（2.78 ± 0.90）mm vs （2.37 ±0.66）mm, P 〈 0.05]. Conclusion： Normal biliary and pancreatic duct can be clearly and completely shown at 3.0 Tesla.
出处
《山东大学学报（医学版）》
CAS
北大核心
2006年第4期410-413,共4页
Journal of Shandong University:Health Sciences
关键词
磁共振成像
胆胰管成像
3D成像
Magnetic resonance imaging
Cholangiopancrealography
Three-dimensional image
