Department of Magnetic Resonance Imaging, Cangzhou Central Hospital, No. 16, Xinhua West Road, Cangzhou City, Hebei Province, 061001, China.
Department of Pathology, Cangzhou Central Hospital, Cangzhou City, 061001, Hebei Province, China.
BMC Med Imaging. 2024 Jul 5;24(1):167. doi: 10.1186/s12880-024-01344-y.
PURPOSE: To develop and validate a multiparametric magnetic resonance imaging (mpMRI)-based radiomics model for predicting lymph-vascular space invasion (LVSI) of cervical cancer (CC). METHODS: The data of 177 CC patients were retrospectively collected and randomly divided into the training cohort (n=123) and testing cohort (n = 54). All patients received preoperative MRI. Feature selection and radiomics model construction were performed using max-relevance and min-redundancy (mRMR) and the least absolute shrinkage and selection operator (LASSO) on the training cohort. The models were established based on the extracted features. The optimal model was selected and combined with clinical independent risk factors to establish the radiomics fusion model and the nomogram. The diagnostic performance of the model was assessed by the area under the curve. RESULTS: Feature selection extracted the thirteen most important features for model construction. These radiomics features and one clinical characteristic were selected showed favorable discrimination between LVSI and non-LVSI groups. The AUCs of the radiomics nomogram and the mpMRI radiomics model were 0.838 and 0.835 in the training cohort, and 0.837 and 0.817 in the testing cohort. CONCLUSION: The nomogram model based on mpMRI radiomics has high diagnostic performance for preoperative prediction of LVSI in patients with CC.
目的:开发和验证一种基于多参数磁共振成像(mpMRI)的放射组学模型,用于预测宫颈癌(CC)的淋巴血管空间侵犯(LVSI)。
方法:回顾性收集了 177 例 CC 患者的数据,并将其随机分为训练队列(n=123)和测试队列(n=54)。所有患者均接受术前 MRI 检查。在训练队列中,使用最大相关性和最小冗余(mRMR)和最小绝对值收缩和选择算子(LASSO)进行特征选择和放射组学模型构建。基于提取的特征建立模型。选择最佳模型并结合临床独立危险因素,建立放射组学融合模型和列线图。通过曲线下面积评估模型的诊断性能。
结果:特征选择提取了 13 个用于模型构建的最重要特征。这些放射组学特征和一个临床特征的选择显示出对 LVSI 和非 LVSI 组的良好区分能力。在训练队列中,放射组学列线图和 mpMRI 放射组学模型的 AUC 分别为 0.838 和 0.835,在测试队列中分别为 0.837 和 0.817。
结论:基于 mpMRI 放射组学的列线图模型对预测 CC 患者术前 LVSI 具有较高的诊断性能。
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