The role of single-shot TSE imaging at 0.5 T MR in the diagnosis of biliary obstructive diseases / 中华放射学杂志

ABSTRACT

Objective To evaluate the diagnostic accuracy of half-Fourier single-shot TSE MR cholangiopancreatography (HASTE-MRCP) of 0.5 T MR scanner, and to assess its imaging advantage and clinical value by comparing with 3D-TSE-MRCP MIP. Methods All 95 patients were examined by HASTE-MRCP and 3D-TSE-MRCP with respiratory-triggering (Philips 0.5 T T5-NT). The results, including anatomies and diseases, were evaluated after operation. Results By HASTE-MRCP, common bile ducts, 1-3 branches of hepatic ducts, gallbladder, and pancreatic ducts were demonstrated in 100.0%, 94.7%, 74.1%, and 63.2% of the cases. Stones, malignant diseases, and postoperative stenosis were revealed in 100.0% of the cases. Compared with 3D-TSE-MRCP, the demonstrating rates of 4-5 hepatic ducts,neck of the gallbladders,and calculi,especially mud calculi, were higher in HASTE-MRCP, and there was significant difference between the two ways. Stones displayed as low signal in the bile ducts. Block obstruction and mass contour were revealed in malignant diseases. Conclusion Comparing with 3D TSE-MRCP, HASTE-MRCP was better and faster, especially in serious patients or in cases with small and mud calculus.