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目的探讨声触诊组织量化成像(VTIQ)剪切波弹性成像技术对不同大小的甲状腺实性结节良恶性鉴别的诊断价值。方法回顾性分析经手术后病理证实的50例患者62个甲状腺实性病灶的常规超声与VTIQ图像资料。先行常规超声检查,对二维超声图像特征进行描述。然后根据病灶大小(≤10 mm和>10 mm)分为两组,测量良恶性病灶及周边组织在VTIQ上的剪切波速度(SWV),绘制受试者操作特性(ROC)曲线,曲线下面积(AUC)进行组间比较,分析评估VTIQ鉴别甲状腺实性病灶良恶性的诊断价值。结果 62个甲状腺病灶中,恶性病灶32个,良性病灶30个。良性病灶与其周边组织的SWV差异无统计学意义(P=0.355),恶性病灶SWV明显高于其周边组织SWV值(P=0.000);良恶性病灶周边组织的SWV差异无统计学意义(P=0.164)。≤10 mm的病灶AUC为0.951,鉴别良恶性SWV截断值为2.53 m/s时,准确性85.7%,灵敏度91.3%,特异度75.0%,阳性预测值87.5%,阴性预测值81.8%,优势比31.5。>10 mm的病灶AUC为0.784,鉴别良恶性SWV截断值为2.56m/s时,准确性77.8%,灵敏度88.9%,特异度77.2%,阳性预测值61.5%,阴性预测值92.8%,优势比20.8。结论 VTIQ对鉴别甲状腺实性良恶性病灶有一定诊断价值,尤其是对≤10 mm的病灶。
Objective To investigate the diagnostic value of acoustic palpation Tissue Quantitative Imaging (VTIQ) shear wave elastography for benign and malignant thyroid solid nodules of different sizes. Methods The routine ultrasound and VTIQ images of 62 thyroid solid lesions in 50 patients confirmed by pathology were retrospectively analyzed. First conventional ultrasound, two-dimensional ultrasound image features described. According to the lesion sizes (≤10 mm and> 10 mm), the shear wave velocity (SWV) of VTIQ in benign and malignant lesions and surrounding tissues were measured and the ROC curve was drawn. Under the curve Area (AUC) were compared between groups to analyze and evaluate the diagnostic value of VTIQ in distinguishing benign and malignant thyroid solid lesions. Results Of 62 thyroid lesions, 32 were malignant and 30 were benign. There was no significant difference in SWV between benign and adjacent tissues (P = 0.355). SWV in malignant lesions was significantly higher than that in surrounding tissues (P = 0.000). There was no significant difference in SWV between benign and malignant lesions (P = 0.164). The AUC of lesions ≤10 mm was 0.951, the accuracy was 85.7%, the sensitivity was 91.3%, the specificity was 75.0%, the positive predictive value was 87.5% and the negative predictive value was 81.8% when the cutoff value of benign and malignant SWV was 2.53 m / s. The odds ratio 31.5. The AUC of lesions> 10 mm was 0.784. The accuracy was 77.8%, the sensitivity was 88.9%, the specificity was 77.2%, the positive predictive value was 61.5% and the negative predictive value was 92.8% when the cutoff value of benign and malignant SWV was 2.56 m / s. 20.8. Conclusion VTIQ has some diagnostic value in the diagnosis of benign and malignant thyroid lesions, especially for ≤ 10 mm lesions.