MR Diagnosis of Extrahepatic Biliary Obstructive Disease
- VernacularTitle:肝外胆道梗阻性疾病的磁共振诊断
- Author:
Fang TIAN
;
Yongsheng DING
;
Jun YUAN
- Publication Type:Journal Article
- Keywords:
MRI;
bile duct obstruction;
extrahepatic;
bilary tract diseases
- From:
Journal of Practical Radiology
2001;0(09):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study MR manifestations of biliary obstructive disease.Methods MR examination (Philips Gyroscan INTERA 1.0T)in 69 patients with biliary obstructive disease were performed.The conventional sequences included:T1WI/FFE,T2WI/TSE,T2WI/SPIR and contrast-enhanced at axial position,coronal B-FFE and MRCP.All images in all cases were compared with the results of operation and pathology.Results 43 cases were benign disorder,of them,42 cases were choledocholithiasis,one case was choledochal cyst.Choledocholithiasis presented as single or multiple round or ovoid with low signal.The direct sign of malignant lesions (26 cases) was the masses with slightly high signal at the obstructive part,the indirect sign of malignant lesions was obstruction or narrow of bile duct. The MR diagnostic accuracy of obstructive location was 100%, and the accuracy for evaluating the causes of obstruction was 89.9%.Conclusion MRCP combining with B-FFE and routine MRI, analysising the direct sign and indirect sign, can improve the diagnostic accuracy of obstructive jaundice.
