C-TIRADS联合声辐射力脉冲成像技术对C-TIRADS3~5类结节中甲状腺乳头状癌的诊断价值

目的  探讨C-TIRADS分类联合声辐射力脉冲成像技术中的声触诊组织成像(VTI)及声触诊组织量化成像(VTIQ)在CTIRADS3~5类甲状腺结节中鉴别诊断甲状腺乳头状癌的应用价值。方法  选取于我院就诊并分类为C-TIRADS3-5类的甲状腺结节患者194例共201个结节, 进行VTIQ及VTI检查, 获取病灶剪切波速度平均值及VTI图像。以病理学为金标准构建ROC曲线, 计算曲线下面积, 获取各诊断方法的最佳诊断界值, 分析3组单独诊断及C-TIRADS+VTI、C-TIRADS+VTIQ二者联合诊断组的诊断效能; 构建C-TIRADS联合VTIQ及VTI的二元Logistic回归预测模型, 计算并分析三者联合诊断组的诊断效能, 采用Z检验比较各组曲线下面积。结果  经明确的细胞病理及组织病理学证实良性结节81枚, 恶性结节120枚; C-TIRADS分类与甲状腺结节恶性率呈较强正相关关系(r=0.624, P < 0.01);与单独应用C-TIRADS (0.806)相比, C-TIRADS+VTI组、CTIRADS+VTIQ组及C-TIRADS+VTI+VTIQ组的曲线下面积均有一定升高, 且三者联合组升高最为明显(0.908), 差异均有统计学意义(P < 0.05), 三者联合诊断与病理的一致性Kappa值较C-TIRADS单独应用上升; 单独应用C-TIRADS诊断甲状腺良恶性结节的敏感度、特异性、准确率分别为90.0%、70.4%、82.0%;C-TIRADS+VTIQ+VTI三者联合预测模型组诊断甲状腺良恶性结节的敏感度、特异性、准确率分别为91.7%、80.2%、86.1%, 诊断恶性结节的准确率为89.2%。结论  声辐射力脉冲技术中的VTI和VTIQ增强了C-TIRADS对甲状腺结节的诊断性能, 声辐射力脉冲技术可作为常规超声的补充, 以非侵入性的方式提高对分类为3~5类的结节中甲状腺乳头状癌鉴别的能力。

Diagnostic value of C-TIRADS combined with acoustic radiation force pulse imaging technology for thyroid papillary carcinoma in C-TIRADS grade 3-5 nodules

  Objective  To explore the application value of acoustic palpation tissue imaging (VTI) and acoustic palpation tissue quantitative imaging (VTIQ) in C-TIRADS classification combined with acoustic radiation force pulse imaging technology in differential diagnosis of thyroid papillary carcinoma in C-TIRADS 3-5 thyroid nodules.  Methods  A total of 194 patients with thyroid nodules classified as C-TIRADS 3-5 in our hospital with 201 nodules were selected for VTIQ and VTI examination to obtain the average value of shear wave velocity and VTI image of the lesions.The ROC curve of the subjects was constructed based on the gold standard of pathology, and AUC was calculated to obtain the best diagnostic threshold of each diagnostic method.The diagnostic efficacy of three groups of independent diagnosis and C-TIRADS+VTI and C-TIRADS+VTIQ combined diagnosis were analyzed.The binary Logistic regression prediction model of C-TIRADS combined with VTIQ and VTI was constructed.The diagnostic efficacy of the three combined diagnostic groups was calculated and analyzed.The AUCs under the curve of each group were compared by Z-test.  Results  Eighty-one benign nodules and 120 malignant nodules were confirmed by clear cytopathology and histopathology.C-TIRADS grade was positively correlated with the malignant rate of thyroid nodules (r=0.624, P < 0.01).Compared with the application of C-TIRADS alone (0.806), the AUC of C-TIRADS VTI group, C-TIRADS VTIQ group and C-TIRADS VTI VTIQ group increased to a certain extent, and the combination of the three groups increased the most significantly (0.908), the difference was statistically significant (P < 0.05).The kappa value of the consistency between the three combined diagnosis and pathology was higher than that of C-TIRADS alone.The sensitivity, specificity and accuracy of C-TIRADS alone in the diagnosis of benign and malignant thyroid nodules were 90.0%, 70.4% and 82.0%, respectively.The sensitivity, specificity and accuracy of C-TIRADS VTIQ VTI combined prediction model group in diagnosis of benign and malignant thyroid nodules were 91.7%, 80.2% and 86.1%, respectively, and the accuracy of diagnosis of malignant thyroid nodules was 89.2%.  Conclusion  The VTI and VTIQ in acoustic radiation force pulse technology enhance the diagnostic performance of C-TIRADS for benign and malignant thyroid nodules.Acoustic radiation force pulse technology can be used as a supplement to conventional ultrasound to improve the ability to differentiate thyroid papillary carcinoma in nodules classified as 3-5 in a non-invasive way.