Table 2.

Results of the SelectKBest module on 105 extracted features by PyRadiomic on the label map of teeth. The numbers of features are associated with the features in the Appendix Table 5

	Score functions
NSF	${\chi }^2$	ANOVA-FV	MI	FV	MIR
1	37	37	21	37	21
5	22, 37, 69, 72, 80	22, 37, 69, 72, 80	21, 22, 29, 40, 75	22, 37, 69, 72, 80	21, 22, 27, 40, 45
10	7, 22, 37, 44, 52, 69, 72, 75, 80, 96	22, 37, 52, 69, 72, 75, 80, 85, 87, 96,	21, 22, 27, 29, 40, 68, 75, 81, 87, 91,	22, 37, 52, 69, 72, 75, 80, 85, 87, 96,	21, 22, 27, 29, 39, 40, 68, 75, 87, 91,

${\chi }^2$ chi-squared, FV F-value, MI mutual information, MIR mutual information regression, NSF number of selected features