2.

Features and their weights included in LN-model

Features	Time	Collective measurement	Weight
LN, lymph node; GLCM, gray level co-occurrence matrix; NCRT, neoadjuvant chemoradiotherapy.
GLCM correlation	Pre-NCRT	Maximum value	1.2316
Skewness	Pre-NCRT	Minimum value	−1.9235
GLCM sum mean	Pre-NCRT	Median value	1.0979
GLCM homogeneity	Post-NCRT	Maximum value	3.2172
Minimum signal intensity	Post-NCRT	Minimum value	−1.9282
Skewness	Post-NCRT	Minimum value	−0.3457
Skewness	Post-NCRT	Standard deviation	0.2052