Table 1:

Evaluation criteria values obtained by different settings of sCTU-net

	SSIM	PSNR	MAE	RMSE
CBCT	0.7109	27.35	44.38	126.43
pCT	0.8134	27.82	32.47	105.85
sCT-w/o-pCT-mae	0.8852	32.72	21.89	64.87
Relative improvement (%)	24.52%	19.63%	50.68%	48.69%
sCT-w/o-pCT-dssim	0.8850	32.38	23.50	68.11
Relative improvement (%)	24.49%	18.39%	47.05%	46.13%
sCT-w/o-pCT-dssim&mae	0.8880	32.69	21.68	65.05
Relative improvement (%)	24.91%	19.52%	51.15%	48.55%
sCT-w-pCT-mae	0.8875	33.19	19.17	64.08
Relative improvement (%)	24.84%	21.35%	56.80%	49.32%
sCT-w-pCT-dssim	0.8874	32.61	20.37	62.28
Relative improvement (%)	24.83%	19.23%	54.10%	50.74%
sCT-w-pCT-dssim&mae	0.8911	33.26	18.98	60.16
Relative improvement (%)	25.35%	21.61%	57.23%	52.42%