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. Author manuscript; available in PMC: 2024 May 1.

Published in final edited form as: IEEE Trans Radiat Plasma Med Sci. 2023 Feb 22;7(5):465–472. doi: 10.1109/trpms.2023.3243576

TABLE II.

Similarity Metrics of SSIM and NMSE between Input SUVR, Synthetic K_i and Ground truth K_i Images

		SUVR		SISO		MISO		SIMO
		SSIM	NMSE	SSIM	NMSE	SSIM	NMSE	SSIM	NMSE
Total	Mean	0.691		0.729	0.139	0.704	0.165	0.704	0.153
Total	Normalized Std	0.103		0.087	0.580	0.010	0.728	0.010	0.626
Group 1	Mean	0.653		0.675	0.014	0.643	0.016	0.638	0.016
Group 1	Normalized Std	0.147		0.072	0.412	0.111	0.552	0.110	0.511
Group 2	Mean	0.727		0.771	0.008	0.759	0.010	0.757	0.009
Group 2	Normalized Std	0.068		0.056	0.317	0.058	0.748	0.062	0.450
Group 3	Mean	0.672		0.735	0.007	0.712	0.008	0.713	0.008
Group 3	Normalized Std	0.085		0.080	0.218	0.088	0.245	0.087	0.203
Group 4	Mean	0.717		0.713	0.016	0.693	0.020	0.695	0.016
Group 4	Normalized Std	0.049		0.054	0.647	0.054	0.733	0.050	0.643
Group 5	Mean	0.689		0.750	0.007	0.713	0.009	0.718	0.009
Group 5	Normalized Std	0.142		0.121	0.292	0.130	0.341	0.124	0.271