. Author manuscript; available in PMC: 2019 Jun 1.

Published in final edited form as: IEEE Trans Med Imaging. 2018 Jun;37(6):1511–1521. doi: 10.1109/TMI.2018.2829896

TABLE IV.

PSNR, ISNR, and SSIM Values of ROI (Barcode) by Different Reconstruction Algorithms for the Cs Phantom

Incident photon	Penalty	Noise level (×10⁻⁵)	PSNR	ISNR	SSIM
5×10³	FDK	120	17.61	/	0.76
	TV	3.51	21.91	5.97	0.96
	Ours	3.46	28.89	11.29	0.99
1×10⁴	FDK	95.20	19.22	/	0.82
	TV	2.79	24.39	5.17	0.97
	Ours	2.74	30.78	11.56	0.99
5×10⁴	FDK	52.10	20.82	/	0.90
	TV	1.96	32.65	11.83	1.00
	Ours	1.96	33.26	12.43	1.00