Table 1.

p values from the two-tailed paired t testing on RAP values for reconstructions with varying beta. Results are shown for the low activity (1 GBq) NEMA phantom acquisition for all analysed spheres

Beta value	Sphere size (mm)	1	1000	2000	3000
1000	37	0.618
	28	0.929
	22	0.493
	17	0.817
2000	37	0.039*	0.111
	28	0.233	0.031*
	22	0.123	0.238
	17	0.779	0.979
3000	37	0.001†	0.003†	0.107
	28	0.014*	0.005†	0.091
	22	0.023*	0.029*	0.223
	17	0.744	0.934	0.928
4000	37	0.000†	0.000†	0.004†	0.125
	28	0.001†	0.000†	0.003†	0.114
	22	0.004†	0.002†	0.020*	0.208
	17	0.698	0.866	0.871	0.850

*p < 0.05

^†p < 0.01