纹理特征分析在肝囊肿及肝血管瘤磁共振成像鉴别诊断中的价值

发布时间：2018-05-27 19:17

本文选题：肝囊肿 + 肝血管瘤　；参考：《中国医学科学院学报》2017年02期

【摘要】：目的比较肝囊肿及肝血管瘤在磁共振成像(MRI)常规T2加权(T2WI)序列图像纹理特征差异。方法选取中国人民解放军总医院海南分院156例肝囊肿(A组:弥散加权成像呈等/低信号肝囊肿100例;B组:弥散加权成像呈高信号肝囊肿56例)及100例肝血管瘤(C组),分别对其MRI常规T2WI序列轴位图像进行纹理特征分析(选取能量、对比度、自相关、逆差距、熵5个纹理特征参数),采用独立样本t检验及Aspin-Welch检验各组之间的纹理特征差异。结果 5个纹理特征参数在3组数据中能量、对比度、自相关、熵差异均有统计学意义(A+B组比C组:P_(能量)=0.000,P_(对比度)=0.000,P_(自相关)=0.000,P_(逆差距)=0.822,P_熵=0.000;A组比C组:P_(能量)=0.000,P_(对比度)=0.000,P_(自相关)=0.000,P_(逆差距)=0.092,P_熵=0.000;B组比C组:P_(能量)=0.000,P_(对比度)=0.000,P_(自相关)=0.000,P_(逆差距)=0.046,P_熵=0.009),同时结合受试者工作特征曲线发现对比度、自相关在肝囊肿及肝血管瘤鉴别中具有较高诊断价值。结论肝囊肿及肝血管瘤在MRI常规T2WI图像的纹理特征显著不同,纹理特征分析可以作为基于MRI常规T2WI图像鉴别肝囊肿与肝血管瘤的工具。
[Abstract]:Objective to compare the texture characteristics of hepatic cyst and hepatic hemangioma in Mr imaging (MRI) T 2 weighted T 2 WI sequence. Methods 156 cases of hepatic cysts in Hainan Branch Hospital of Chinese people's Liberation Army were selected. Group A: 100 cases of hepatic cysts with diffusion-weighted imaging and group B: 56 cases of high-signal hepatic cysts with diffusion-weighted imaging) and 100 cases of hepatic hemangioma. The MRI conventional T2WI sequence axial images were analyzed by texture feature analysis (selecting energy, etc.) Contrast, autocorrelation, inverse disparity, entropy 5 texture feature parameters, independent sample t test and Aspin-Welch test were used to test the differences of texture features among the groups. Results the energy, contrast, autocorrelation of five texture feature parameters were observed in three groups of data. The difference of entropy is statistically significant in group A and B than in group C. There is a statistical difference between group A and group C in comparison with group C in terms of comparison between group A and group C (P = 0.000 / P / P / P / P / P) / P / P / P / P / P / P = P / P / P / P / P / P / P / P / P / P / P / P / P / P / P / A / P / P / P / P / P / P / P / P / P / P / P / P / P / P / A / P / P / P / P / A / P / P / P / P = 0.000 / P / P = 0.000 / P / P = The P _ entropy of 0. 046 ~ 0. 046% is 0. 009 ~ 0. 009, and the contrast is found according to the operating characteristic curve of the subjects. Autocorrelation has high diagnostic value in differentiating hepatic cyst from hepatic hemangioma. Conclusion the texture features of hepatic cyst and hepatic hemangioma are significantly different in MRI conventional T2WI images. Texture analysis can be used as a tool for differentiating hepatic cyst from hepatic hemangioma based on MRI conventional T2WI images.
【作者单位】：中国人民解放军总医院海南分院放射科;中国人民解放军总医院放射科;
【分类号】：R445.2;R735.7;R575

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