磁共振动态增强检查和弥散加权成像在肝结节性病变与小肝癌诊断的对比研究

Comparative study of dynamic enhanced magnetic resonance imaging(MRI)and diffusion weighted imaging(DWI) in liver nodules lesions and small hepatocellular carcinoma

目的研究磁共振动态增强和弥散加权成像(DWI)在肝结节性病变与小肝癌诊断中的应用,对比其对肝脏病变的检出率和诊断率。方法选取2013年5月至2014年5月收治的肝脏占位性病变患者125例(172个病灶),比较磁共振动态增强检查、DWI扫描检查和磁共振动态增强与DWI联合运用三种方法对肝脏占位性病变的检出率和诊断率。结果 172个病灶中,磁共振动态增强检出136个病灶,检出率为79.1%,DWI检出128个病灶,检出率74.4%,两种方法检出率差异无统计学意义(P>0.05)。磁共振动态增强和DWI联合运用检出163个病灶,检出率94.8%,显著高于磁共振动态增强组和DWI组,差异有统计学意义(P<0.05)。125例患者中,磁共振动态增强检查定性诊断出102例,占81.6%,DWI共定性诊断87例,占69.6%。磁共振动态增强和DWI联合运用组的定性诊断率为93.6%,显著高于磁共振动态增强组和DWI组,差异有统计学意义(P<0.05)。结论磁共振动态增强结合DWI扫描检查,有利于提高诊断率,为临床治疗提供确切的方案。

Objective To investigate the application of dynamic enhanced magnetic resonance imaging（MRI）and diffusion weighted imaging（DWI）in hepatic nodular lesions with a diagnosis of small hepatocellular carcinoma,and to compare the liver lesion detection rate and diagnosis rate between both methods.Methods One hundred and twenty five patients with total 172 focal hepatic lesions were enrolled from May 2013 to May 2014 in our hospital.Dynamic enhanced MRI,DWI and the combined apply of two methods were performed to scan liver nodules and small hepatocellular carcinoma.Results In 172 lesions,dynamic enhanced MRI detected 136 lesions,with detection rate as 79.1%,while DWI detected 128 lesions,with detection rate as 74.4%,which showed no significant difference（P0.05）.The combined apply of dynamic enhanced MRI and DWI detected 163 lesions with the detection rate as 94.8%,which was significantly higher（P0.05）than that of dynamic enhanced MRI or DWI group.Conclusion The combined apply of dynamic enhanced MRI and DWI is conducive to improving the rate of diagnosis,which provides the exact solutions for the clinical treatment.