Comparison of MR cholangiopancreatography with fast imaging employing steady state acquisition in the diagnosis of common bile duct obstruction disease

ObjectiveTo compare the diagnostic value of 3 imaging techniques, 2D and 3D MR cholangiopancreatography (MRCP) and fast imaging employing steady state acquisition (FIESTA), in the diagnosis of obstructive diseases of the common bile duct system.

MethodsA total of 44 cases of choledocholithiasis were retrospectively analyzed with 2D, 3D MRCP and FIESTA sequences, including 35 cases of choledocholithiasis, 3 cases of pancreatic head cancer, 3 cases of acute pancreatitis, 2 cases of gallbladder cancer, and 1 case of duodenal malignant tumor.The quality of 2D, 3D MRCP and FIESTA images of the 44 cases was evaluated according to the image quality evaluation criteria, and the difference in the diagnostic accuracy of 2D MRCP, 2D combined with 3D MRCP, and 2D, 3D MRCP combined with FIESTA imaging for choledochal obstruction disease was compared by using the χ² test with the surgery as the gold standard.

ResultsThe differences in the image quality of 2D MRCP, 3D MRCP, and FIESTA were statistically significant (P < 0.05), and the image quality of 2D MRCP was better than that of 3D MRCP and FIESTA, while there was no significant difference in the image quality of the latter two.The diagnostic accuracy of 2D MRCP was 77.3% in 44 cases, the diagnostic accuracy of 2D MRCP combined with 3D MRCP was 88.6%, and the diagnostic accuracy of 2D MRCP combined with 3D MRCP was 88.6%.In 44 cases, the diagnostic accuracy of 2D MRCP was 77.3%, 2D MRCP combined with 3D MRCP was 88.6%, and 2D and 3D MRCP combined with FIESTA was 97.7%, and the difference in diagnostic accuracy among the three methods was statistically significant (P < 0.05).

ConclusionsAmong the three imaging sequences, the image quality of 2D MRCP was better than that of 3D MRCP and FIESTA; 2D and 3D MRCP combined with FIESTA imaging technology can significantly improve the diagnostic correction of choledochal obstruction and more comprehensively reveal the etiology of choledochal obstruction, which is of high clinical application value.