静脉注射联合口服钆喷酸葡胺磁共振胆胰管成像在低场强MR的应用

目的分析口服稀释静脉用钆喷酸葡胺溶液作为低场强磁共振胃肠道阴性对比剂及联合静脉注射钆喷酸葡胺磁共振胆胰管成像(MRCP)在低场MR中用于显示胆胰管及疾病的能力。方法 30例临床可疑有胆胰管病变的患者,均有不同程度胆系梗阻、腹痛、不同程度皮肤或巩膜黄染等,部分有腹部肿块,均行MR平扫、Gd-DTPA(钆喷酸葡胺)强化检查,部分同时行超声及CT检查。结果 30例受检者均能清楚显示胆胰管树,并能清晰显示病变位置,其中18例发现肝内胆管占位,10例发现肝内胆管、肝外胆管及(或)胆囊结石,2例胰头占位。结论口服钆喷酸葡胺溶液可抑制胃及十二指肠内潴留液的高信号以及胆胰管树背景的小血管信号,改善MRCP图像的质量,结合肝胆MR平扫、强化应用具有较高的肝内、外胆管显示率及肝内、外胆管病变的显示能力,能为胆胰管病变的诊断及鉴别诊断提供更多帮助。

Intravenous and oral Gd-DTPA MRCP application in low field MR

Objective To analyse the capability of oral diluted intra-venous Gd-DTPA solution as a low-field magnetic resonance contrast agents and the gastrointestinal tract negative combined with intravenous injection of Gd-DTPA magnetic resonance cholangiopancreatography（MRCP） in the low-field MR to display pancreatic duct and disease.Methods 30 cases with suspected pancreatic duct with varying degrees of biliary obstruction,abdominal pain,varying degrees of skin or sclera jaundice,etc.,part of the abdominal mass,underwent MR scan,Gd-DTP A（Gd-DTPA） enhanced checks,part of the same line of ultrasound and CT.Results 30 subjects were clearly showhn clear bile duct tree and location of lesions,including 18 patients with intrahepatic bile duct mass,10 patients with intrahepatic bile duct,extrahepatic bile duct and（or） gallbladder stones,and 2 cases with pancreatic head mass.Conclusion Oral administration of Gd-DTPA solution can inhibit fluid retention within the stomach and duodenum of high background signals and bile duct tree signal of small blood vessels can improve MRCP image quality,combined with hepatobiliary MR scan to strengthen the application of high liver,bile duct display rate and liver,bile duct lesion display capabilities.It is useful for the diagnosis and differential diagnosis of bile duct lesions.