Table 1. Numerical comparison between SPECTnet and OS-EM for Figure 8 in the uptake regions by activity mean value and SD.

Case	High-uptake region mean activity (SD)				Low-uptake background mean activity (SD)
	True	SPECTnet	OS-EM		SPECTnet	OS-EM
1	4	3.52 (0.83)	3.27 (0.87)		1.01 (0.19)	1.01 (0.27)
2	5	4.43 (0.98)	3.93 (1.22)		1.01 (0.30)	1.03 (0.32)
3	6	5.32 (0.99)	4.16 (1.53)		1.00 (0.29)	1.03 (0.32)
4	7	6.23 (1.16)	5.69 (1.72)		0.99 (0.30)	1.03 (0.39)
5	9	8.19 (1.34)	7.32 (2.37)		1.04 (0.31)	1.05 (0.44)