True FISP序列在胰胆管疾病的应用

评价ＴｒｕｅＦＩＳＰ序列在胰胆管疾病中的应用价值与限度。材料与方法，对９８例怀疑胰胆管疾病的患者和１２例正常志愿者做ＴｒｕｅＦＩＳＰ与ＡＳＴＥ－ＭＲＣＰ扫描。结果ＴｒｕｅＦＩＳＰ像、ＭＲＣＰ断层像和ＭＲＣＰＭＩＰ像显示胰胆管扩张的准确性均达到了１００％，对病变定位的准确率分别为９４．４％、８３．３％；对胆管结石定性的准确率（特异性）分别为７３．３％（８８．１％）、９３．３％（９２．９％）和６６．７

Clinical Application of True FISP Sequences in Pancreaticobiliary Diseases

Objective To assess the clinical application and limitation of True FISP sequences in the diagnosis of biliary and pancreatic tract diseases.Materials and Methods Breath hold True FISP and HASTE MRCP were performed in 98 patients with suspected pancreaticobiliary disease and 12 normal volunteers. Imaging findings on True FISP and HASTE MRCP were correlated with direct cholangiographic, surgical and/or pathologic findings (72 patients). All images were interpreted by two radiologists on a blinded basis.Results Images of diagnostic quality were obtained in all 110 cases with True FISP (100%). All sequences showed 100% sensitivities in recognizing the dilated tracts. In 72 proved patients, the sensitivity (and specificity) for lesion location by True FISP, MRCP and MRCP MIP was 94.4%, 83.3% and 86.1%, respectively; for calculi recognition (n=30) was 73.3% (88.1%), 93.3% (92.9%) and 66.7% (81.0%), respectively; for tumor diagnosis (n=42) was 85.7% (90.0%), 61.9% (83.3%) and 57.1% (76.7%), respectively. When combined with all imaging sequences, the sensitivity (and specificity) for tumor and calculi definition was 90.5% (93.3%) and 96.7% (95.2%), respectively.Conclusion With its good delineating ability, HASTE MRCP can accurately evaluate pancreaticobiliary diseases. The True FISP sequence is good at revealing the pancreaticobiliary tract wall lesions as well as the tumor invasion. More accurate diagnosis will be obtained if these two imaging techniques are applied together.