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目的 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HASTE 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10 0 % ;对病变定位的准确率分别为 94.4%、83 .3 %和 86.1% ;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% ( 81.0 % ) ;对肿瘤的定性准确率 (特异性 )分别为 85 .7% ( 90 .0 % )、61.9% ( 83 .3 % )和 5 7.1% ( 76.7% )。结合所有的序列对结石诊断的准确率 (特异性 )为 96.7% ( 95 .2 % ) ,对肿瘤定性诊断的准确率 (特异性 )为 90 .5 % ( 93 .3 % )。结论 TrueFISP序列对胰胆管疾病的管壁和管周病变的显示良好。HASTE MRCP有利于胰胆管的整体显示 ,结合两者可对胰胆管疾病作出更准确的评价并有利于治疗方式的选择。
Objective To evaluate the value and limit of TrueFISP sequence in pancreaticobiliary diseases. Materials and Methods TrueFISP and HASTE MRCP scans were performed on 98 patients with suspected pancreaticobiliary diseases and 12 normal volunteers. Results TrueFISP, MRCP and MRCPMIP images showed that the accuracy of pancreaticobiliary dilatation was 100%, and the accuracy of localization of lesions was 94.4%, 83.3% and 86.1% respectively. The accuracy rate of biliary calculi (Specificity) were 73.3% (88.1%), 93.3% (92.9%) and 66.7% (81.0%) respectively, and the qualitative accuracy (specificity) of the tumors were 85.7% (specificity) 90.0%), 61.9% (83.3%) and 51.1% (76.7%). The accuracy (specificity) of combining all the sequences for the diagnosis of stones was 96.7% (95.2%) and the accuracy (specificity) of qualitative diagnosis of tumors was 90.5% (93.3%). Conclusion The TrueFISP sequence shows good performance in the wall and tube of pancreaticobiliary diseases. HASTE MRCP is beneficial for the overall presentation of pancreaticobiliary duct. Combining the two can provide a more accurate assessment of pancreaticobiliary disease and is conducive to the choice of treatment modality.