肝脏孤立性结节病变的多层CT 与磁共振成像对照研究

摘要

Objective To compare the efficacy of MRI and multi-slice CT(MSCT) for characterization of liver isolation nodular lesions in cirrhosis patients .Methods A total of 64 patients with 64 lesions ,underwent MSCT and MRI .Chi-square tests were used to compare the performances of MSCT and MRI in characterization of lesions .Results The detection rate ,accuracy ,sensitivity ,spe-cificity ,positive predictive and negative predictie of MSCT and MRI were 76 .56% ,65 .31% ,37 .50% ,78 .79% ,72 .22% ,46 .15%and 87 .50% ,85 .71% ,66 .67% ,97 .14% ,82 .93% ,93 .33% respectively .There were statistical difference in accuracy ,specificity , positie predictie between MSCT and MRI (P< 0 .05) .Conclusion MRI is superior to MSCT in accuracy ,specificity ,and positive predictive for characterization of liver isolation noduler lesions .%目的：探讨多层CT（MSCT）、磁共振成像（MRI）在肝硬化背景下肝脏孤立性结节性病变诊断中的诊断效能差异。方法对有肝硬化背景的64例患者（64个孤立性病灶）分别行M SC T 和 M RI增强检查，并对其诊断结果进行分析。结果MSCT和MRI的检出率、准确度、灵敏度、特异度、阳性预测值和阴性预测值分别为76．56％、65．31％、37．50％、78．79％、72．22％、46．15％和87．50％、85．71％、66．67％、97．14％、82．93％、93．33％，M RI的诊断准确度、特异度、阳性预测值与M SC T相比差异有统计学意义（P＜0．05）。结论 MRI对肝硬化背景下肝脏局灶性病变的诊断准确度、特异度和阳性预测值优于MSCT。