Combined Apparent Diffusion Coefficient Maps Radiomics Signature and Hormone Receptors Predict Pathological Complete Response of Neoadjuvant Chemotherapy in Breast Cancer
Objective To investigate the value of a combined apparent diffusion coefficient(ADC)mapsbased radiomics signature and hormone receptors model in predicting pathological complete response to neoadjuvant chemotherapy(NC)in breast cancer.Methods Data was collected from 165 female breast cancer patients,aged 28 to 70 years,who underwent NC prior to diffusion-weighted imaging examination.A total of 396 radiomics features were extracted from the ADC maps followed byfeature selection.The clinical features of the pathological complete response(PCR)group and pathological partial response(PPR)group were compared.Significant features and optimal radiomics features were then included in the logistic regression to establish the models.The performance of the model was evaluated using the ROC curve and decision analysis curve.Results There was significant difference in hormone receptors between the two groups both in the training and testing set.The performance of ADC maps maps-based radiomics model yield an AUC of 0.785 in the training set and an AUC of 0.639 in the testing set.The proposed model that combined(ADC)maps-based radiomics signature and hormone receptors yielded a maximum AUC of 0.904 in the training set and an AUC of 0.789 in the testing set.The decision curve showed that the benefit of the combined model was higher than that of the(ADC)maps-based radiomics model.Conclusion The combined model,which integrated with(ADC)maps-based radiomics signature and hormone receptors,may serve as a potential markers to successfully predict complete pathological response to NC.
Breast CancerApparent Diffusion CoefficientHormone ReceptorRadiomicsNeoadjuvant Chemotherapy