Table 2 The spatial resolution values of the NEMA point sources in a warm background for the WT-PET and the Quadra-like TB-PET

WT-PET

Center

(1, 0, 0)

1.20

1.62

1.30

2.87

4.14

3.06

(10, 0, 0)

1.16

1.90

1.12

2.81

4.83

2.89

(20, 0, 0)

1.17

1.94

1.19

2.60

4.36

2.81

3/8 of AFOV

(1, 0, 39.75)

1.14

2.13

1.24

2.86

5.22

3.20

(10, 0, 39.75)

1.21

2.48

1.29

3.19

7.11

3.06

(20, 0, 39.75)

1.26

2.52

1.05

2.08

5.58

2.08

Center

(0, 1, 0)

1.18

1.75

1.34

2.43

3.79

2.54

(0, 10, 0)

1.22

1.92

1.33

2.54

4.20

2.54

(0, 20, 0)

1.32

2.25

1.41

2.71

7.08

2.71

3/8 of AFOV

(0, 1, 39.75)

1.29

2.24

1.16

2.58

5.71

2.59

(0, 10, 39.75)

1.52

2.71

1.46

2.91

6.54

3.35

(0, 20, 39.75)

1.65

3.36

1.88

3.76

8.18

3.96

Quadra-like TB-PET 322 MRD

Center

(1, 0, 0)

2.55

2.62

2.85

5.68

6.45

7.03

(10, 0, 0)

3.76

3.27

2.95

7.24

7.98

7.78

(20, 0, 0)

5.24

3.97

3.62

10.39

9.39

8.03

3/8 of AFOV

(1, 0, 39.75)

2.09

2.35

2.24

4.76

5.70

4.68

(10, 0, 39.75)

2.78

3.14

2.89

5.85

7.64

5.03

(20, 0, 39.75)

4.63

3.31

3.20

8.61

6.81

5.76

Quadra-like TB-PET 85 MRD

Center

(1, 0, 0)

2.62

2.70

2.72

5.02

5.66

4.82

(10, 0, 0)

2.86

2.72

2.78

6.66

6.43

5.86

(20, 0, 0)

5.24

3.40

2.94

9.27

9.71

5.79

3/8 of AFOV

(1, 0, 39.75)

2.22

2.44

2.40

4.80

5.71

4.84

(10, 0, 39.75

3.31

3.02

2.71

6.35

6.67

5.95

(20, 0, 39.75)

4.29

2.66

2.23

8.55

10.78

5.82