Department of Ultrasound, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
Department of Ultrasound, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
Ultrasound Med Biol. 2020 Apr;46(4):981-991. doi: 10.1016/j.ultrasmedbio.2019.12.017. Epub 2020 Jan 21.
The objective of this study was to evaluate the inter-operator reproducibility of strain elastography (SE) and shear wave elastography (SWE) in three groups: all lesions, benign lesions and malignant lesions. Ninety-one lesions from ninety-one women were examined by SE and SWE from January 2017 to December 2017 by two radiologists. The reproducibility of elastic score, SE strain ratio and SWE Young's modulus between operators was prospectively evaluated. There was good agreement on elasticity score, with κ values of 0.711, 0.640 and 0.766. The intra-class correlation coefficients of the strain ratio, mean elastic modulus (E), maximum elastic modulus (E) and elastic modulus standard deviation (E) ranged from 0.723-0.876, which indicated good and excellent agreement. We concluded that both SE and SWE had good reproducibility among different operators using the same probe in the same ultrasound instrument. Strain elasticity score was more consistent among operators in malignant breast tumors. There was better agreement on strain elastic ratio and shear wave elasticity among operators in benign breast lesions.
本研究旨在评估应变弹性成像（SE）和剪切波弹性成像（SWE）在三组中的操作者间可重复性：所有病变、良性病变和恶性病变。两位放射科医生于 2017 年 1 月至 2017 年 12 月对 91 名女性的 91 个病灶进行了 SE 和 SWE 检查。前瞻性评估了弹性评分、SE 应变比和 SWE 杨氏模量在操作者之间的可重复性。弹性评分具有很好的一致性，κ 值为 0.711、0.640 和 0.766。应变比、平均弹性模量（E）、最大弹性模量（Emax）和弹性模量标准差（E）的组内相关系数范围为 0.723-0.876，表明具有良好和优秀的一致性。我们得出结论，使用相同探头和同一台超声仪器，SE 和 SWE 在不同操作者之间具有良好的可重复性。在恶性乳腺肿瘤中，应变弹性评分在操作者之间更一致。在良性乳腺病变中，应变弹性比和剪切波弹性在操作者之间的一致性更好。
