MRI纹理分析在鉴别甲状腺腺瘤和甲状腺乳头状癌中的价值

Value of MRI Texture Analysis in the Differentiation of Thyroid Adenoma and Papillary Thyroid Carcinoma

目的探讨MRI纹理分析对甲状腺腺瘤(TA)和甲状腺乳头状癌(PTC)的鉴别及诊断价值。方法回顾性分析33例经病理学诊断为TA(n=13)和PTC(n=20)患者的影像学资料,行甲状腺MRI检查,获得T_1WI及T_2WI图像,运用灰度直方图及灰度共生矩阵对TA及PTC的T_1WI、T_2WI图像进行纹理分析。结果 TA组T_2WI图像均值明显高于PTC组,差异具有统计学意义(P<0.01);TA组T_2WI图像熵值大于PTC组,差异具有统计学意义(P<0.01);偏度、峰度以及标准差差异均无统计学意义(P>0.05)。结论 T_2WI图像纹理特征有助于鉴别诊断TA和PTC。

Objective To evaluate the value of texture analysis in the differentiation and diagnosis of Thyroid adenoma(TA)and Papillary thyroid carcinoma(PTC).Methods Retrospective analysis of imaging data of 33 patients with TA(n=13)and PTC(n=20)which were confirmed by pathology was done,after thyroid MRI examination,T1WI and T2WI imaging are obtained,then gray histogram and gray-level co-occurrence matrix are applied for texture analysis on the T1WI and T2WI signals of TA and PTC.Results The mean value of MRI T2WI imaging in the TA group were significantly higher than those in the PTC group,the difference was statistically significant(P<0.01).The entropy of MRI T2 WI signal in the TA group was greater than that in the PTC group,the difference was statistically significant(P<0.01).There was no significant difference in skewness,kurtosis and standard deviation(P>0.05).Conclusion The texture features of MRI T2 WI signal are helpful for the differentiation and diagnosis of TA and PTC.