永磁型磁共振胰胆管水成像技术及其临床应用

Clinical Application of Magnetic Resorance Cholangio-Pancreatic

目的用MR水成像（water imaging）技术探讨磁共振胰胆管成像（MRCP）在胰胆管病变中的诊断价值。方法检查病人54例,其中正常志愿者12例,肝内外胆管结石27例,恶性胆管梗阻7例,胆总管囊肿2例,胆囊术后胆管扩张3例,胆管炎性狭窄2例,慢性胰腺炎1例。MRCP选择性应用单次激发超快速自旋回波序列（SSFSE-XL）（二维）。结果采用单次激发超快速自旋回波序列（SSFSE-XL）序列所得MRCP图像清晰显示正常胆管树,胆道梗阻患者均能显示梗阻部位及程度。结论利用开放式低场强磁共振进行MRCP检查具有无创、安全、快速、简单易行等特点,能够明确有无梗阻及梗阻程度,明确梗阻部位及判断梗阻原因。SSFSE-MRCP检查成功率高,操作简单快速,对胰胆管病变的定位诊断准确,结合常规MRI平扫、MRI增强扫描使用,对肝外胆管结石和恶性胆管梗阻及其他胰胆管病变的定性诊断有较高准确性及诊断价值。

Objective to evaluate the value of Magnetic Resonance Cholangio-Pancreatic（MRCP） imaging.Methods 54 patients are examined of MRCP,including 12 normal volunteer,27 inner or extra hepatic cholelithiasis,7 malignant bile duct obstruction,2 Choledochal Cyst,3 bile duct dilation after cholecystectomy,2 bile duct inflammatory stenosis and 1 chronic pancreatitis.The pulse sequence for MRCP is Single Shot Fast Spin Echo（SSFSE）.Result The MRCP technique can clearly demonstrate the bile duct tree and all bile duct infarction are detected by its location and degree.Conclusion MRCP with open magnetic resonance system has the advantage of non-invasive,quick,simple and available.It may detect the infarction of bile duct,show its location and give clue to diagnosis.