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目的探讨磁共振成像(MR I)及磁共振胰胆管成像(MRCP)对胆管癌的诊断价值。方法对27例有完整临床资料的胆管癌病例行常规MR I平扫,病变部薄层扫描,及三期轴位动态增强扫描,并用2种不同方法行磁共振胰胆管成像(MRCP):①HT2-FSE不屏气二维多平面薄层采集;②单次激发快速自旋回波技术(SSFSE)单平面厚层采集。结果几种成像方法对病变局部的显示率分别为T1W I 52%(14/27)、T2W I 70%(19/27)、局部薄层扫描85%(23/27)、增强扫描100%(27/27);定位诊断率:HT2-FSE二维多平面薄层采集为100%(27/27),SSFSE单平面厚层采集为89%(24/27)。结论胆道薄层扫描及动态增强扫描对恶性胆道肿瘤的定位及定性诊断有较大的帮助,MRCP可无创显示胆道形态,有助于诊断。
Objective To investigate the diagnostic value of magnetic resonance imaging (MR I) and magnetic resonance cholangiopancreatography (MRCP) in cholangiocarcinoma. Methods Twenty-seven cases of cholangiocarcinoma with complete clinical data underwent routine MRI scan, thin layer lesion of the lesion and dynamic enhanced MRI at three stages. Magnetic resonance cholangiopancreatography (MRCP) was performed by two different methods: -FSE non-holding two-dimensional multi-plane thin-layer acquisition; ② single-shot rapid spin echo technique (SSFSE) single plane thick acquisition. Results The results of several imaging methods showed that the local display rate of lesions was 52% (14/27) of T1W I, 70% (19/27) of T2W I, 85% (23/27) of local TLC and 100% (27/27). The localization rate of diagnosis was 100% (27/27) for HT2-FSE and 89% (24/27) for SSFSE monolayer. Conclusions Thin layer biliary tract scan and dynamic contrast-enhanced scan are helpful for the localization and qualitative diagnosis of malignant biliary tumors. MRCP can display the biliary morphology noninvasively and is helpful for the diagnosis.