四征

MRCP资源像的选择性重建在四管征的显示中具有重要作用，不仅可以提高四管征的显示率，而且可以提高重建图像质量。

The source image especially selective-reconstruced MRCP image which can increase both rate of four-segment sign and quality of MRCP is important in analysis of MRCP .

结论：软藤征、空虚征和双管征是恶性梗阻性黄疸的重要MRCP征象，四管征可作为胰头癌的特异性征象。

Conclusion : The vine-sign , the defect-sign and the double-duct-sign are very important MRCP signs of malignant obstructive jaundice , and the four-segmental duct-sign can be regarded as a specific MRCP sign of pancreatic carcinomas .

结论：MRCP联合常规MR扫描诊断胰头癌及十二指肠乳头癌准确率高，应用价值大，且通过MRCP图像的特异征象（双管征、四管征）可区分胰头癌及十二指肠乳头癌。

Conclusion The accuracy of MRCP in the detection of periampullary carcinomas is high with help of the conventional MR images . The specific MRCP signs ( double-duct sign and four-segment sign ) can help to discriminate the pancreatic carcinomas and duodenal carcinomas , and elevate the diagnostic accuracy .

第四是肝肾综合征，占37.10%，并发症为重症肝炎病人死亡的主要原因，并发症越多，死亡率越高。

Complication is the main cause for the death of fulminate hepatitis patients . The more complications , the higher mortality .