磁敏感加权成像(SWI)对肝硬化结节癌变的诊断价值

The Value of Susceptibility Weighted Imaging(SWI)in the Diagnosis of Canceration of Liver Cirrhosis Nodules

目的:探究对肝硬化结节癌变患者实施磁敏感加权成像(SWI)诊断的效果。方法:随机抽取2017年4月至2020年4月广东医科大学附属医院52例肝硬化患者为观察对象,对其均实施常规磁共振扫描及磁敏感加权成像检查,以手术病理检查结果为参照,对比常规磁共振扫描及磁敏感加权成像检查的检出效果。结果:经常规磁共振检查显示,58个结节中,33个恶性结节,25个良性结节,误诊9个,漏诊4个。经一致性检测显示Kappa值为0.787,提示一致性良好。经磁敏感加权成像检查显示,58个结节中,31个恶性结节,27个良性结节,误诊4个,漏诊1个。经一致性检测显示Kappa值为0.897,提示一致性良好。常规磁共振诊断肝硬化结节癌变的敏感度、特异度、总准确率分别为85.71%、70.00%、77.59%,磁敏感加权成像诊断肝硬化结节癌变的敏感度、特异度、总准确率分别为96.43%、86.67%、91.38%,统计发现,磁敏感加权成像诊断肝硬化结节癌变总准确率较常规磁共振更高,P<0.05。结论:对肝硬化结节癌变患者实施磁敏感加权成像诊断的效果较佳,更有助于提高诊断准确率。

Objective:To investigate the effect of susceptibility weighted imaging(SWI)in the diagnosis of patients with canceration of liver cirrhosis nodules.Methods:52 patients with liver cirrhosis received by our hospital from April 2017 to April 2020 were randomly selected as the objects of observation.Routine MR scanning and SWI were performed on them.The detection effects of routine MR scanning and SWI were compared with the reference of the results of surgical pathological examination.Results:According to the routine MR inspection,among 58 nodules,33 were malignant,25 were benign,9 were misdiagnosed and 4 were missed.The consistency test showed that Kappa value was 0.787,indicating good consistency.According to the SWI inspection,among 58 nodules,31 were malignant,27 were benign,4 were misdiagnosed and 1 was missed.The consistency test showed that Kappa value was 0.897,indicating good consistency.The sensitivity,specificity and total accuracy of diagnosis of canceration of liver cirrhosis nodules by conventional MRI were 85.71%,70.00%and 77.59%,respectively.The sensitivity,specificity and total accuracy of diagnosis of canceration of liver cirrhosis nodules by SWI were 96.43%,86.67%and 91.38%,respectively.According to statistics,it was found that the overall accuracy rate of SWI in the diagnosis of canceration of liver cirrhosis nodules was higher than that of conventional MRI(P<0.05).Conclusion:The effect of SWI in the diagnosis of patients of canceration of liver cirrhosis nodules is better.It can help to improve the accuracy of diagnosis.