EJNMMI Research

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

From: Optimising quantitative ⁹⁰Y PET imaging: an investigation into the effects of scan length and Bayesian penalised likelihood reconstruction

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

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