实时超声弹性成像中定量参数在甲状腺结节的诊断价值  

Evaluation of Quantitative Index in Elastography Ultrasound in Differentiating Thyroid Nodules

作　　者：梁婷[1,2] 丛淑珍[1,2] 周立峰[1,2] 郭汉涛[1,2] 王煜[1,2] 

机构地区：[1]广东省医学科学院 [2]南方医科大学附属广东省人民医院超声科,广州市510080

出　　处：《中国超声医学杂志》2012年第8期689-692,共4页Chinese Journal of Ultrasound in Medicine

基　　金：广东省科技计划项目[No.(2010)1096]

摘　　要：目的探讨弹性应变率中的ROI A值在鉴别甲状腺良恶性结节的应用价值,分析弹性应变率、ROI A值的相关性。方法经病理证实的229个甲状腺结节术前均行超声弹性成像检查,计算其弹性应变率、ROI A值,绘制这两种方法的ROC曲线;双变量相关分析评价弹性评分分别与弹性应变率、ROI A值的相关性。结果弹性应变率、ROI A值的最合适诊断界点分别为2.5、0.001 8,ROI A值的敏感性、特异性、准确性较弹性应变率的有所提高。ROI A值与弹性评分的相关性高于弹性应变率与弹性评分的相关性。结论 ROI A值在鉴别甲状腺良恶性结节上有良好的临床价值,且比弹性应变率的实用价值高。Objective The aim of the study is to explore the value and the practicability of a strain index （ROI A value） in differentiating thyroid nodules. Methods All 229 thyroid nodules were scanned by real-time elastography ultrasound to obtain the strain ratio and ROI A value before surgery. Two receiver operating characteristic（ROC） curves were drawn, one for strain ratio and one for the ROI A method to get the best cutoff value. And sensitivity, specificity, accuracy were calculated. Bivariate Correlations were used to analyze correlations between elastography score and strain ratio,ROI A value respectively. Results The best cutoff value of strain ratio and ROI value was 2.5,0. 001 8 respectively. And sensitivity, specificity, and accuracy of ROI A were higher than that of strain ratio. The closer correlation existed in elastography score and ROI A value than that of in elastography score and strain ration. Conclusions ROI A value is benefit for differentiating thyroid nodules, and has more practicability than strain ratio.

关 键 词：超声弹性成像 弹性应变率 甲状腺结节 

分 类 号：R445.1[医药卫生—影像医学与核医学]