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Quantitative assessment of shear-wave ultrasound elastography in thyroid nodules: Diagnostic performance for predicting malignancy

机译：甲状腺结节中剪切波超声弹性成像的定量评估：预测恶性肿瘤的诊断性能

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Objectives: To evaluate the predictability of shear-wave ultrasound elastography (SWE) for thyroid malignancy and to compare the diagnostic performances of SWE and B-mode US. Methods: Retrospective review of 99 patients who underwent SWE before US-guided fine-needle aspiration of thyroid nodules was performed. SWE elasticity indices of the mean (Emean), maximum (Emax), and minimum (Emin) of nodules were measured. Diagnostic performance of SWE was compared with that of B-mode US. Results: Among a total of 99 nodules, 21 were papillary thyroid carcinoma (PTC) and 78 were benign. Emean, Emax, and Emin were significantly higher in PTCs than in benign nodules (P 0.001). Sensitivity and specificity for predicting malignancy were 76.1 %, 64.1 % with E max (65 kPa), 61.9 %, 76.1 % with Emin (53 kPa), and 66.6 %, 71.6 % with Emean (62 kPa). Areas under the ROC curves (Az) of SWE values were not significantly different from those of US categories on B-mode US. However, combining Emean and Emin with B-mode US of probably benign lesions improved the specificity (P = 0.02, 0.007) for predicting PTC. Conclusions: The quantitative parameter of SWE was significantly higher in PTC than in benign nodules, and combined use of quantitative SWE and B-mode US provided higher specificity for predicting malignancy. Key Points: ? Quantitative shear-wave elastography (SWE) helps differentiate benign from malignant nodules ? SWE and conventional ultrasound have comparable diagnostic performance for predicting thyroid malignancy ? Combined quantitative SWE and B-mode ultrasound is highly specific for thyroid malignancy
机译：目的：评估剪切波超声弹性成像（SWE）对甲状腺恶性肿瘤的可预测性，并比较SWE和B型超声的诊断性能。方法：回顾性分析99例在美国指导的甲状腺结节细针穿刺术前接受SWE的患者。测量结节的平均值（Emean），最大（Emax）和最小（Emin）的SWE弹性指数。将SWE的诊断性能与B型US的诊断性能进行了比较。结果：在总共99个结节中，乳头状甲状腺癌（PTC）21个，良性78个。 PTC中的Emean，Emax和Emin明显高于良性结节（P <0.001）。预测恶性肿瘤的敏感性和特异性分别为76.1％，Emax（65kPa）为64.1％，Emin（53kPa）为61.9％，76.1％，Emean（62kPa）为66.6％，71.6％。 SWE值的ROC曲线（Az）下的面积与B模式美国的美国类别的面积无显着差异。但是，将Emean和Emin与可能良性病变的B型US结合可以提高预测PTC的特异性（P = 0.02，0.007）。结论：PTC中SWE的定量参数显着高于良性结节，并且定量SWE和B型US的联合使用为预测恶性肿瘤提供了更高的特异性。关键点： ？定量剪切波弹性成像（SWE）有助于区分良性还是恶性结节？ SWE和常规超声在预测甲状腺恶性肿瘤方面具有可比的诊断性能。结合定量SWE和B型超声对甲状腺恶性肿瘤具有高度特异性

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