Optimization of brain PET imaging for a multicentre trial: the French CATI experience

EJNMMI Physics

Table 2 Recovery coefficient values for both reconstructions and all centres obtained from Jaszczak acquisitions

Centre number	7.86 mm Hot sphere		12.43 mm Hot sphere		14.43 mm Hot sphere		24.82 mm Hot sphere		9.89 mm Cold sphere		24.82 mm Cold sphere
Centre number	RP	OP	RP	OP	RP	OP	RP	OP	RP	OP	RP	OP
1	0.17	0.25	0.52	0.57	0.56	0.59	0.74	0.74	0.20	0.34	0.57	0.81
2	0.25	0.29	0.64	0.68	0.76	0.77	0.95	0.95	0.24	0.32	0.64	0.79
3	0.24	0.26	0.59	0.66	0.70	0.75	0.91	0.92	0.40	0.50	0.74	0.74
4	0.23	0.25	0.55	0.56	0.74	0.73	0.93	0.91	0.25	0.29	0.76	0.75
5	0.29	0.25	0.76	0.70	0.78	0.74	0.94	0.92	0.33	0.37	0.67	0.76
6	0.49	0.52	0.85	0.86	0.90	0.91	1.01	1.01	0.33	0.46	0.64	0.77
7	0.37	0.46	0.79	0.78	0.89	0.82	1.04	0.97	0.33	0.52	0.70	0.78
8	0.20	0.24	0.61	0.62	0.70	0.70	0.92	0.91	0.22	0.22	0.64	0.60
9	0.30	0.41	NA	NA	0.87	0.82	1.06	0.99	NA	NA	0.73	0.80
10	0.15	0.24	0.71	0.80	0.80	0.85	0.99	0.99	0.29	0.42	0.64	0.78
11	0.15	0.38	0.63	0.75	0.68	0.78	0.92	0.95	0.26	0.44	0.68	0.84
12	0.17	0.17	0.71	0.71	0.73	0.73	0.91	0.91	0.41	0.41	0.74	0.74
13	0.67	0.41	1.02	0.77	0.97	0.79	1.03	0.94	0.57	0.41	0.89	0.78
14	0.44	0.30	0.78	0.64	0.72	0.70	0.93	0.94	0.40	0.52	0.78	0.80
15	0.26	0.24	0.70	0.69	0.75	0.73	0.93	0.92	0.35	0.50	0.72	0.79
16	0.65	0.45	0.97	0.79	0.95	0.84	0.98	0.98	0.60	0.48	0.92	0.79
17	0.43	0.48	0.74	0.73	0.78	0.77	0.95	0.94	0.35	0.43	0.66	0.72
18	0.43	0.41	0.76	0.74	0.78	0.76	0.87	0.86	0.39	0.43	0.74	0.77
19	0.25	0.37	0.66	0.72	0.68	0.73	0.92	0.93	0.21	0.37	0.54	0.78
20	0.27	0.30	0.58	0.60	0.75	0.76	0.97	0.97	0.38	0.39	0.79	0.79
21	0.34	0.30	0.82	0.77	0.84	0.80	1.00	0.99	0.31	0.33	0.70	0.76
22	0.22	0.33	0.63	0.72	0.76	0.82	0.96	0.97	0.27	0.39	0.59	0.72
Mean	0.32	0.33^**	0.72	0.71	0.78	0.77	0.95	0.94	0.34	0.41^,^*	0.70	0.77^,^*
S.D.	0.14	0.09^***	0.13	0.08^***	0.09	0.06^***	0.07	0.06	0.10	0.08	0.09	0.05^***

RP routine parameters, OP optimized parameters
^*Wilcoxon signed rank test, p < 0.05 for 22 centres; ^**Wilcoxon signed rank test, p < 0.05 for 18 centres; ^***Pitman test, p < 0.05