乳腺对比增强磁共振成像上导管原位癌同侧复发与影像组学特征的关系
Ipsilateral Recurrence of DCIS in Relation to Radiomics Features on Contrast Enhanced Breast MRI.
作者信息
Park Ga Eun, Kim Sung Hun, Lee Eun Byul, Nam Yoonho, Sung Wonmo
机构信息
Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea.
Division of Biomedical Engineering, Hankuk University of Foreign Studies, Yongin 17035, Korea.
出版信息
Tomography. 2022 Mar 1;8(2):596-606. doi: 10.3390/tomography8020049.
The purpose of this retrospective study was to investigate the association between ipsilateral recurrence of ductal carcinoma in situ (DCIS) and radiomics features from DCIS and contralateral normal breast on contrast enhanced breast MR imaging. A total of 163 patients with DCIS who underwent preoperative MR imaging between January 2010 and December 2014 were included (training cohort; n = 117, validation cohort; n = 46). Radiomics features were extracted from whole tumor volume of DCIS on early dynamic T1-subtraction images and from the contralateral normal breast on precontrast T1 and early dynamic T1-subtraction images. After feature selection, a Rad-score was established by LASSO Cox regression model. Performance of Rad-score was evaluated by the receiver operating characteristic (ROC) curve and Kaplan Meier curve with log rank test. The Rad-score was significantly associated with ipsilateral recurrence free survival (RFS). The low-risk group with a low Rad-score showed higher ipsilateral RFS than the high-risk group with a high Rad-score in both training and validation cohorts (p < 0.01). The Rad-score based on radiomics features from DCIS and contralateral normal breast on breast MR imaging showed the potential for prediction of ipsilateral RFS of DCIS.
本回顾性研究的目的是探讨乳腺导管原位癌(DCIS)同侧复发与DCIS及对侧正常乳腺在对比增强乳腺磁共振成像上的影像组学特征之间的关联。纳入了2010年1月至2014年12月期间接受术前磁共振成像检查的163例DCIS患者(训练队列;n = 117,验证队列;n = 46)。从早期动态T1减影图像上DCIS的整个肿瘤体积以及对比前T1和早期动态T1减影图像上对侧正常乳腺中提取影像组学特征。经过特征选择后,通过LASSO Cox回归模型建立Rad评分。通过受试者操作特征(ROC)曲线和采用对数秩检验的Kaplan Meier曲线评估Rad评分的性能。Rad评分与同侧无复发生存期(RFS)显著相关。在训练队列和验证队列中,Rad评分低的低风险组的同侧RFS均高于Rad评分高的高风险组(p < 0.01)。基于乳腺磁共振成像上DCIS及对侧正常乳腺的影像组学特征的Rad评分显示出预测DCIS同侧RFS的潜力。