TABLE 3.

Comparison of Results Obtained from Analysis of Image Quality in LD PET Images and Predicted Images in PIS and PSS for Validation Dataset

Dataset	SSIM	PSNR	RMSE
Validation
PIS	0.97 ± 0.02	34.60 ± 1.08	0.18 ± 0.02
PSS	0.98 ± 0.01	38.25 ± 0.66	0.15 ± 0.03
LD	0.84 ± 0.04	29.00 ± 0.92	0.40 ± 0.03
P (PIS vs. PSS)	0.022	0.019	0.016
P (PIS vs. LD)	0.037	0.021	0.036
P (PSS vs. LD)	0.042	0.025	0.030
Test
PIS	0.96 ± 0.03	31.70 ± 0.75	0.18 ± 0.04
PSS	0.97 ± 0.02	37.30 ± 0.71	0.17 ± 0.01
LD	0.82 ± 0.15	29.92 ± 0.71	0.41 ± 0.04
P (PIS vs. PSS)	0.031	0.024	0.018
P (PIS vs. LD)	0.040	0.036	0.041
P (PSS vs. LD)	0.041	0.031	0.031