Table 4 Means and standard deviations of image quality parameters determined for NEMA PET body phantom measurements

RC_mean

¹⁸F-FDG

1.06 ± 0.01

1.08 ± 0.02

1.00 ± 0.04

1.02 ± 0.05

⁶⁸Ga-HCl

0.97 ± 0.09

1.03 ± 0.08

0.95 ± 0.06

0.96 ± 0.05

⁶⁴Cu-HCl

1.05 ± 0.03

1.07 ± 0.02

1.10 ± 0.03

1.12 ± 0.03

RC_max

¹⁸F-FDG

1.38 ± 0.05

1.45 ± 0.04

1.33 ± 0.09

1.37 ± 0.11

⁶⁸Ga-HCl

1.28 ± 0.13

1.41 ± 0.15

1.23 ± 0.04

1.28 ± 0.07

⁶⁴Cu-HCl

1.38 ± 0.06

1.43 ± 0.05

1.42 ± 0.09

1.51 ± 0.06

RC_peak

¹⁸F-FDG

1.12 ± 0.23

1.10 ± 0.25

1.00 ± 0.33

1.03 ± 0.34

⁶⁸Ga-HCl

1.01 ± 0.13

1.08 ± 0.16

1.00 ± 0.16

0.99 ± 0.21

⁶⁴Cu-HCl

1.10 ± 0.22

1.10 ± 0.27

1.09 ± 0.33

1.13 ± 0.34

CRC (%)

¹⁸F-FDG

100.99 ± 1.72

101.57 ± 2.99

96.46 ± 4.07

97.86 ± 5.24

⁶⁸Ga-HCl

81.99 ± 10.88

76.48 ± 8.32

80.98 ± 5.75

91.20 ± 5.06

⁶⁴Cu-HCl

98.97 ± 3.67

98.79 ± 2.18

103.90 ± 3.32

106.09 ± 3.09

CNR

¹⁸F-FDG

34.26 ± 0.58

24.60 ± 0.72

86.55 ± 3.65

64.19 ± 3.44

⁶⁸Ga-HCl

27.83 ± 3.69

19.36 ± 2.11

70.48 ± 5.00

61.10 ± 3.39

⁶⁴Cu-HCl

46.86 ± 1.74

33.24 ± 0.73

76.40 ± 2.44

57.87 ± 1.69

CoV_BG (%)

¹⁸F-FDG

8.96 ± 0.33

12.55 ± 0.15

9.72 ± 0.21

13.29 ± 0.77

⁶⁸Ga-HCl

9.60 ± 0.40

12.87 ± 0.41

9.67 ± 0.43

12.56 ± 0.81

⁶⁴Cu-HCl

9.30 ± 0.64

13.09 ± 0.63

9.68 ± 0.69

13.04 ± 0.77

Lung count error [%]

¹⁸F-FDG

3.82

5.42

4.19

5.22

⁶⁸Ga-HCl

7.85

13.48

8.23

5.90

⁶⁴Cu-HCl

3.72

5.11

3.76

4.95