Table 3.

P values by performing t test between our proposed method and all the comparing methods for MAE, PSNR, and NCC on the brain and pelvic data.

Method	Brain			Pelvis
	MAE	PSNR	NCC	MAE	PSNR	NCC
RF‐based	0.008	<0.001	0.011	0.008	0.009	0.014
GAN‐based	0.002	0.009	<0.001	<0.001	0.002	0.002
2D cycle GAN‐based	0.009	0.011	0.001	0.002	0.005	0.007

GAN, Generative adversarial networks; HU, Hounsfield units; MAE, mean absolute error; NCC, normalized cross correlation; PSNR, peak signal‐to‐noise ratio.