ObjectiveTo investigate the diagnostic value of magnetic resonance cholangiopancreatography(MRCP) combined with the coronal magnetic resonance imaging(MRI) in the biliary obstruction.MethodsSeventy patients with obstructive jaundice confirmed by pathology were selected as the subjects, and all patients were detected using MRCP and coronal MRI(plain scan+ enhancement) scanning before operation.The accuracy of the positioning and qualitative diagnosis of biliary obstruction using MRCP, MRI coronal examination and combination of MRCP and MRI were analyzed.ResultsThere was no statistical significance in the accuracy of positioning diagnosis of biliary obstruction among three groups(P>0.05).The qualitative diagnosis accuracy rate of the MRCP, MRI coronal examination and combination of MRCP and MRI in biliary obstruction were 71.4%, 82.9% and 94.3%, respectively, and the accuracy of combined examination was higher than that of MRCP or MRI coronal exmination alone(P < 0.05).There was no statistical significance in the accuracy of qualitative diagnosis of benign biliary obstruction among three groups(P>0.05).The accuracy of qualitative diagnosis of the MRCP, MRI coronal examination and combination of MRCP and MRI in malignant biliary obstruction were 58.7%, 78.3% and 93.5%, respectively, and the accuracy of combined examination was higher than that of MRCP or MRI coronal exmination alone(P < 0.01).ConclusionsIn the localization diagnosis of biliary obstruction, the diagnostic accuracy of MPCP and MRI coronal imaging are high.The qualitative diagnosis of MRI coronal position in malignant obstruction is better than that of MRCP sequence.The combination of MPCP and MRI coronal imaging can significantly improve the qualitative diagnosis of biliary obstruction, which can provide a valuable reference basis for the clinical determination of the etiology of obstructive jaundice, and is worthy of promotion and use.