Department of Medical Ultrasound, Affiliated Hangzhou Chest Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China.
The Second Clinical Medical College, Zhejiang Chinese Medicine University, Hangzhou, Zhejiang Province, China.
Eur J Radiol. 2023 Sep;166:111000. doi: 10.1016/j.ejrad.2023.111000. Epub 2023 Jul 20.
PURPOSE: To investigate the clinical value of the radiomics model of grayscale ultrasound (GUS) and contrast-enhanced ultrasound (CEUS) to diagnosis subpleural pulmonary tuberculosis and nonpulmonary tuberculosis based on GUS and CEUS images. METHODS: This study included 221 patients with 228 lesions diagnosed using the composite reference standard. The patients were randomly divided into training (n = 183) and test (n = 45) cohorts in an 8:2 ratio. The regions of interest of the GUS and CEUS images were manually segmented to extract the radiomic features. The GUS, CEUS and GUS+CEUS radiomics models were constructed via the multistep selection of highly correlated features. Receiver operating characteristic curves of the different models were plotted, and the area under the curve (AUC), accuracy, sensitivity, specificity, positive predictive value and negative predictive value (NPV) of the different models were compared. RESULTS: Following Least Absolute Shrinkage and Selection Operator dimension reduction we selected 4, 9, and 11 features to construct the GUS, CEUS, and GUS+CEUS radiomics models, respectively. The AUC values of the three groups in the test cohort were 0.689, 0.748 and 0.779, respectively, and they did not differ significantly. In the test cohort, the GUS+CEUS radiomics model exhibited the highest AUC (0.779), accuracy (75.56%), and NPV (68.7%) of the three models. CONCLUSIONS: The GUS+CEUS radiomics model possesses good clinical value in diagnosing pulmonary tuberculosis.
目的:探讨基于灰阶超声(GUS)和超声造影(CEUS)图像的灰阶超声和超声造影纹理分析模型对胸膜下肺结核和非肺结核的诊断价值。
方法:本研究纳入了 221 名经综合参考标准诊断为 228 个病灶的患者。患者按 8:2 的比例随机分为训练(n=183)和测试(n=45)队列。手动分割 GUS 和 CEUS 图像的感兴趣区域以提取放射组学特征。通过多步选择高相关特征构建 GUS、CEUS 和 GUS+CEUS 放射组学模型。绘制不同模型的受试者工作特征曲线,并比较不同模型的曲线下面积(AUC)、准确性、敏感度、特异度、阳性预测值和阴性预测值(NPV)。
结果:经最小绝对收缩和选择算子降维后,我们分别选择了 4、9 和 11 个特征来构建 GUS、CEUS 和 GUS+CEUS 放射组学模型。测试队列中三组的 AUC 值分别为 0.689、0.748 和 0.779,差异无统计学意义。在测试队列中,GUS+CEUS 放射组学模型的 AUC(0.779)、准确性(75.56%)和 NPV(68.7%)最高。
结论:GUS+CEUS 放射组学模型对肺结核的诊断具有良好的临床价值。
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