The Value Of Gd-DTPA Orally Used In Low-Tesla MRCP And MRCP In Diagnosis Of Variations Of Cystic Duct

Part 1 The value of Magnevist (Gd-DTPA) orally used in low-Tesla MRCPObjective: Using oral Gd-DTPA as a negative contrast agent to null the bowel signal during MR cholangiopancreatography (MRCP) to improve the quality of MRCP.Methods: The MRCP of 50 cases acquired after orally using 5ml of Magnevist diluted by 15 ml of water were compared with those of themselves with the unified scan parameters done before taking Magnevist. Multiple MRCP images were acquired by the pulse sequence of half-fourier acquisition single-shot turbo echo (HASTE) .Results: The MRCP after Magnevist use with the lower signal of gastroduodenal liquid held the better images than the check before contrast agent use (P < 0. 05).Conclusion: The method of orally using diluted Magevist may hold the MRCP images with more quality,Part 2 The value of low-Tesia MRCP in diagnosis of variations of cystic ductObjective: To study the normal variations of cystic duct and evaluate the clinical value.Methods: Magnetic resonance cholangiopancreatography(MRCP) was performed in 500 cases who have clinical history of cholelithiasis . Multiple MRCP images were acquired by the pulse sequence of half-fourier acquisition single-shot turbo echo (HASTE). Gd-DTPA, the negative contrast agent in gut, was taken orally to improve thecontrast of biliary system before MRCP.Results: MRCP could clearly demonstrate the cystic ducts in 442 cases(88.4%), in which there were 268 cases(60.6%) and 174 cases (39.4%) having normal and abnormal cystic duct respectively.Conclusion: The anatomy variations of cystic duct can be clearly showed by MRCP, which is helpful to operation of biliary system.