TABLE 1.

Training set and test set of CT, or PET for binary and four-class classification.

	Training set	Test set
*Binary classification
Adc vs. NAdc	131 vs. 221	37 vs. 56
Sqc vs. NSqc	103 vs. 249	26 vs. 67
Primary vs. Mts	287 vs. 65	77 vs. 16
Four-class classification
Adc vs. Sqc vs. Mts vs. Oth	131 vs. 103 vs. 65 vs. 53	37 vs. 26 vs. 16 vs. 14

*Adc, Adenocarcinoma, Sqc, squamous cell carcinoma, Mts, metastases, NAdc, not adenocarcinoma, NSqc, not squamous cell carcinoma.