Using kinematic MR cholangiopancreatography to evaluate XXXX .

@entity1 @entity384 @entity3885 @entity2996 @entity74
OBJECTIVE: The purpose of this study was to evaluate the usefulness of @entity2996 as an aid in predicting the need for intervention in @entity1 with @entity384 . SUBJECTS AND METHODS: Fifty @entity1 with suspected @entity74 were separated into three groups. Group I @entity1 had @entity384 with periampullary lesions (n = 16), group II @entity1 had supraampullary obstructive lesions (n = 17), and group III @entity1 had @entity384 without @entity3885 (n = 17). Twenty consecutive single thick-slice MRCP images were obtained in the 15 degrees or 30 degrees left anterior oblique coronal plane. Two radiologists jointly reviewed the images without knowledge of the final diagnosis. The numbers of images showing relaxation of the sphincteric segment and the configuration of the distal margin of the common bile duct for the three groups were compared. RESULTS: Relaxation of the sphincteric segment was observed on the images of only two @entity1 (12%) in group I but on the images of all @entity1 in groups II and III, although not on all images. Lack of visualization of sphincteric relaxation on the kinematic MRCP images had a sensitivity of 88% and a specificity of 100% for the diagnosis of periampullary lesions. Most @entity1 whose images did not show sphincteric relaxation required biliary intervention at the sphincter level. CONCLUSION: Nonvisualization of sphincteric relaxation on kinematic MRCP indicates ampullary or periampullary lesions. Kinematic MRCP can be used to determine the necessity of biliary intervention in @entity1 with @entity384 .
