<0.05),其中135方向游程长不均匀度、梯度偏度及小波低高频转换系数s-3这3组参数曲线下面积(area under curve,AUC)分别为0.759、0.803及0.731,诊断准确率中等。另外,分析发现,135方向游程长不均匀度联合梯度偏度、梯度偏度联合小波低高频转换系数s-3鉴别两组病变的诊断效能分别为0.824和0.833,诊断准确率较单一参数高。
结论:
基于磁共振T2WI序列的纹理分析可用于鉴别NPC和NPH性疾病。
Abstract
Objective:
To evaluate the value of texture analysis derived from T2WI in differential diagnosis between nasopharyngeal carcinoma (NPC) and nasopharyngeal hyperplasia (NPH).
Methods:
Forty-eight cases of NPC and NPH confirmed by operation and pathology were analyzed retrospectively. All of them were examined by magnetic resonance im
aging (MRI). Thirty cases were NPC and 18 cases were NPH. Two groups of lesions were analyzed by MaZda software. A total of groups of parameters were obtained by selecting the largest layer of the lesion on the T2WI image and measuring the parameters of the region of interest (ROI). Finally
multi-parameter combination were used to identify NPC and NPH.
Results:
The seven parameters of S(0
5) Entropy
S(5
5) Entropy
S(5
-5) Entropy
45dgr_RLNonUni
135dr_RLNonUni
GrSkewness and WavEnLH_s-3 were of statistical significance between the two groups (
P
<0.05)
among which
the area under curve (AUC) of 135dr_RLNonUni
GrSkewness and WavEnLH_s-3 were 0.759
0.803 and 0.731
respectively
and the diagnostic accuracy was at a moderate level. In addition
the two- parameter combined analysis of this study found that the diagnostic efficacy of 135dr_RLNonUni + GrSkewness and GrSkewness + WavEnLH_s-3 in the identification of two groups of lesions were 0.824 and 0.833
respectively
and contrast to the single parameter
the accuracy of combined analysis of two parameters was better.
Conclusion:
Texture analysis of T2WI can be used to identify NPC and NPH.