Table 3: Performance on tumor-specific tissues. Five texture features, i.e. dissimilarity, contrast, homogeneity, energy, and corre- lation, were extracted from all the image patches of a tumor. The mean absolute error of each feature was reported.

Kernel	Model	dissimilarity	contrast	homogeneity	energy	correlation
BL57	GANai	0.124 ± 0.098	0.124 ± 0.098	0.018 ± 0.012	0.098 ± 0.054	0.877 ± 0.368
	STAN-CT	0.114 ± 0.026	0.114 ± 0.026	0.017 ± 0.005	0.041 ± 0.019	0.847 ± 0.408
BR40	GANai	0.616 ± 0.104	0.616 ± 0.104	0.091 ± 0.018	0.222 ± 0.061	1.184 ± 0.646
	STAN-CT	0.602 ± 0.081	0.602 ± 0.081	0.076 ± 0.011	0.182 ± 0.061	1.184 ± 0.646