高场2D-SSFSE和3D-FRFSE序列胆胰管成像质量及显示程度的对比研究  

A Comparative Study of Imaging Quality and Display of Pancreaticobiliary Duct between 2D-SSFSE and 3D-FRFSE MRCP Sequences

作　　者：刘念[1] 黄小华[1] 董国礼[1] 高才良[1] 于红梅[1] 汤梦月[1] 

机构地区：[1]医学影像四川省重点实验室,川北医学院附属医院放射科

出　　处：《中国医学计算机成像杂志》2013年第6期514-518,共5页Chinese Computed Medical Imaging

基　　金：四川省卫生厅科研项目(090147)~~

摘　　要：目的：通过3．0TMRI二维单次激发快速自旋回波（2DSSFSE）与三维快速恢复快速自旋回波（3DFRFSE）序列MRCP成像，评价不同序列MRCP成像质量及胆胰管显示。方法：40例行高场MRCP检查患者，均行2D—SSFSE（TR／TE2840－6000／900ms，NEXl）和屏气3D—FRFSE（TR／TE2140／800ms，NEX1）序列MRCP成像。成像质量及显示程度由两名影像医师参照评分标准盲法评分，评分标准按图像质量标准和胆胰管显示程度分为1～5分，并将胰胆管系统分为9段（肝右管、肝左管、肝总管、胆囊管、胆总管、胰胆管汇合部、胰头管、胰体管和胰尾管），分段计分。计分结果行统计学分析。结果：2D—SSFSE和屏气3D—FRFSE两种序列成像对胆囊管、胆总管、胰头管、胰体管、胰尾管显示的图像质量有统计学意义（P〈0．05），对肝右管、胆囊管、胰头管、胰体管、胰尾管、胰胆管汇合部的显示程度有统计学意义（P〈0．05）。屏气3D—FRFSE序列在显示胆囊管和胆总管的图像质量优于2D—SSFSE序列，胰头管、胰体管及胰尾管的图像质量低于2D-SSFSE序列；2D—SSFSE序列对肝右管、胰头管、胰体管、胰尾管、胰胆管汇合部的显示程度优于3D—FRFSE序列，对胆囊管的显示低于3D—FRFSE序列。结论：2D—SSFSE和3D—FRFSEMRCP序列对胆胰管系统图像质量及显示程度各有优势，不同序列MRCP选择应结合临床诊断要求个性化。Purpose： To evaluate the imaging quality and display degree of pancreaticobiliary duct in different MRCP （magnetic resonance cholangiopancreatography） sequences by means of 3.0T MRI two- dimensional single-shot fast spin-echo （2D-SSFSE） and three-dimensional fast recovery fast spin echo （3D-FRFSE）. Methods： Forty cases were undergone MRCP examinations on a 3.0T MRI by means of 2D-SSFSE （TR/TE 2840-6000/900ms, NEX1） and 3D-FRFSE （TR/TE 2140/800ms, NEX1） sequences. Two radiologists applied the blinded scoring methods according to the grading criteria to evaluate the imaging quality and display degree of pancreaticobiliary duct. Five scores from 1 to 5 were used to grade nine sections of pancreaticobiliary duct which were right hepatic duct, left hepatic duct, common hepatic duct, cystic duct, common bile duct, pancreaticobiliary duct junction, pancreatic duct in the head, body and tail, respectively. All the data were statistically analyzed. Results： Statistical significances were found between the two MRCP sequences of 2D-SSFSE and 3D-FRFSE on the imaging quality of cystic duct, common hepatic duct, pancreatic duct in the head, body and tail, and on the display degree of right bile duct, cystic duct, pancreatic duct in the head, body and tail, and pancreaticobiliary duct junction （P〈0.05）. 3D-FRFSE was better than 2D-SSFSE in displaying the cystic duct and common bile duct, but was not as good as 2D-SSFSE in displaying the imaging quality of pancreatic duct in the head, body and tail. 2D-SSFSE was better than 3D-SSFSE in the displaying of right hepatic duct, pancreatic duct in the head, body and tail, and pancreaticobiliary duct junction, but was not as good as 3D-SSFSE in the display of cystic duct. Conclusion： 2D-SSFSE MRCP sequence and 3D-FRFSE MRCP sequence have their own advantages on the imaging quality and display degree of pancreaticobiliary duct and the choice of different sequence should be according to the clinical diagnosis.

关 键 词：磁共振胰胆管成像 单次激发快速自旋回波 3D快速恢复快速自旋回波 图像质量 

分 类 号：R445.2[医药卫生—影像医学与核医学]