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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