Fig. 5

The nomogram and calibration curves of the training, internal test, and external test cohorts. (a) Nomogram for predicting the probability of cervical LNM in PTC patients; (b) Calibration curves of the nomogram across the three cohorts. LNM: lymph node metastasis; PTC: papillary thyroid carcinoma; RS1.0Â mm: radiomics signature based on intratumoral and 1Â mm peritumoral region