Preoperative Prediction of Axillary Lymph Node Metastasis in Breast Cancer Based on Intratumoral and Peritumoral DCE-MRI Radiomics Nomogram

Table 2

Evaluation results of the imaging model in the training cohort and validation cohort.

Performance indicators	Intratumoral		Peritumoral		Intratumoral + peritumoral
	Training	Validation	Training	Validation	Training	Validation
AUC	0.844	0.708	0.828	0.616	0.867	0.768
Accuracy	0.740	0.677	0.732	0.629	0.768	0.677
Sensitivity	0.714	0.708	0.776	0.500	0.929	0.958
Specificity	0.875	0.757	0.763	0.789	0.651	0.552