Comparison of the diagnostic performances between strain elastography and shear-wave elastography in differentiation of benign and malignant solid breast lesions
10.3877/cma.j.issn.1672-6448.2016.12.013
- VernacularTitle:应变式弹性成像与剪切波弹性成像技术鉴别诊断乳腺良恶性病灶的价值比较
- Author:
Xiaojing, PENG
;
Ao, LI
;
Xinhua, YE
;
Tao, YUAN
- Keywords:
Breast neoplasms;
Elasticity imaging techniques;
Diagnosis,differential
- From:
Chinese Journal of Medical Ultrasound (Electronic Edition)
2016;13(12):942-947
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the diagnostic performances of strain elastography (SE) and shear-wave elastography (SWE) in differentiating benign and malignant solid breast lesions. Methods From January 2015 to December 2015, 150 patients with 155 lesions were examined with SE and SWE respectively in the First Affiliated Hospital with Nanjing Medical University. Elasticity scores on a improved 5-point scale,strain ratio (SR), maximum elasticity (Emax), mean elasticity (Emean), standard deviation of the elasticity (Esd) and the lesion-to-fat elasticity ratio (Eratio) were assessed. The receiver operating characteristic (ROC) curve of SE and SWE parameters were plotted to assess the value in distinguishing benign and malignant breast lesions. The results were compared using the area under the ROC curve (AUC). The accuracy of the parameters with the largest AUC were compared between SE and SWE by McNemar test in different breast imaging reporting and data system (BI-RADS) categories. Results The AUC of elasticity scores, SR, Emax,Emean, Esd and Eratio were 0.823, 0.810, 0.877, 0.835, 0.881 and 0.853, respectively. The SE and SWE parameter with the largest AUC were elasticity scores and Esd respectively. The accuracy of Esd was higher than that of elasticity scores(86.3% vs 64.7%)in 4A lesions (2=4.639, P < 0.05). There were no significant differences in accuracy in other BI-RADS categories. Conclusions Both SE and SWE were helpful for the differentiation of benign and malignant solid breast lesions, and the diagnostic performance of SE and SWE was similar. The optimization of elastography can be achieved by combination with BI-RADS.
