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Table 3 Ratio values for both reconstructions and all centres obtained from Hoffman-3D acquisitions

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

Centre number Right/left ratio Anterior/posterior ratio Putamen/WM ratio Caudate/WM ratio GM/WM ratio
RP OP RP OP RP OP RP OP RP OP
1 1.01 1.00 1.00 1.01 2.39 2.49 1.68 1.95 2.92 2.98
2 1.00 1.00 1.01 1.01 2.50 2.53 1.84 2.00 2.98 3.02
3 1.01 1.01 1.00 1.00 2.37 2.42 1.73 1.85 2.84 2.92
4 1.01 1.01 1.01 1.01 2.57 2.57 1.92 1.94 3.09 3.09
5 0.99 0.99 1.02 1.02 2.50 2.45 1.89 1.93 3.01 2.91
6 1.02 1.02 1.03 1.03 2.48 2.52 1.91 2.06 2.96 2.98
7 1.00 1.00 1.05 1.01 2.37 2.56 1.71 2.03 2.85 2.98
8 1.02 1.02 1.04 1.05 2.24 2.25 1.57 1.61 2.73 2.70
9 1.01 1.01 1.01 1.01 2.66 2.77 1.78 2.20 3.40 3.32
10 1.03 1.03 1.00 1.00 2.65 2.72 1.86 2.08 3.33 3.37
11 1.03 1.03 0.98 0.97 2.33 2.64 1.57 2.11 2.83 3.18
12 1.01 1.01 1.03 1.03 2.32 2.32 1.74 1.74 2.69 2.69
13 1.00 1.00 1.05 1.04 2.96 2.62 2.48 2.05 3.75 3.09
14 1.01 1.00 1.05 0.99 2.15 2.37 1.75 1.81 2.34 2.82
15 1.00 1.00 1.01 1.01 2.42 2.51 1.83 2.05 2.79 2.84
16 0.99 1.00 1.02 1.03 3.06 2.78 2.60 2.19 3.77 3.28
17 1.00 1.00 1.01 1.02 2.57 2.62 1.89 2.08 3.06 3.06
18 1.00 1.00 1.05 1.05 2.52 2.50 2.00 2.03 2.99 2.94
19 0.99 0.99 1.01 1.02 2.46 2.64 1.68 2.02 3.00 3.18
20 1.00 1.00 1.01 1.01 2.48 2.50 1.89 1.93 2.93 2.95
21 1.00 1.00 1.02 1.02 2.58 2.51 1.95 1.93 3.06 2.93
22 1.03 1.02 1.00 1.01 2.57 2.67 1.82 2.04 3.23 3.28
Mean 1.01 1.01 1.02 1.02 2.51 2.54*,** 1.87 1.98*,** 3.03 3.02
S.D. 0.01 0.01 0.02 0.02 0.20 0.13*** 0.24 0.14*** 0.32 0.18***
  1. RP routine parameters, OP optimized parameters, WM white matter, GM grey matter
  2. *Wilcoxon signed rank test, p < 0.05 for all centres; **Wilcoxon signed rank test, p < 0.05 for 18 centres; ***Pitman test, p < 0.05