. Author manuscript; available in PMC: 2021 Feb 26.

Published in final edited form as: IEEE Trans Comput Imaging. 2020 Apr 27;6:843–856. doi: 10.1109/TCI.2020.2990299

Table II. Quantitative measures for low dose scans along with benchmark results for each algorithm. Averaged over 210 slices of test patient. Mean values are shown with their standard deviation.

	PSNR	SSIM	Train	Exec.	Parameter	Memory
FBP	32.48 ±1.55	0.73 ±0.0612	-10s	33ms	1	1477MB
LGS	43.25 ±1.24	0.963 ±0.0032	2h31m	149ms	128970	2229MB
U-Net denoiser	42.76 ±1.52	0.960 ±0.0026	1h38m	67ms	3.1·10⁷	2733MB
MS-LGS	41.42 ±1.33	0.948±0.0041	1h42m	53ms	128970	1143MB
MS-LFGS	42.85 ±1.25	0.960 ±0.0034	2h07m	154ms	129690	1143MB
∂ U-Net	43.51 ±1.23	0.965 ±0.0032	3h25m	224ms	2.3·10⁶	1351MB