Skip to main content

Table 1 The FWHM axial resolutions are displayed separately for the two reconstruction methods (MURA Decoding and 3D-MLEM) and for raw and preprocessed detector images

From: Assessment of the axial resolution of a compact gamma camera with coded aperture collimator

Source distance

[mm]

MURA decoding

3D-MLEM

Raw

[mm]

Preprocessed

[mm]

Raw

[mm]

Preprocessed

[mm]

12

5.3 ± 0.6

5.3 ± 0.6

2.17 ± 0.03

1.75 ± 0.03

14

4.7 ± 0.1

4.7 ± 0.1

2.20 ± 0.02

1.80 ± 0.06

16

6.0 ± 0.2

5.8 ± 0.2

2.32 ± 0.04

1.85 ± 0.08

18

6.9 ± 0.2

6.2 ± 0.2

2.34 ± 0.02

2.02 ± 0.03

20

7.5 ± 0.1

7.3 ± 0.1

2.60 ± 0.09

2.26 ± 0.02

25

11.0 ± 0.4

9.8 ± 0.4

2.37 ± 0.02

2.54 ± 0.04

30

12.1 ± 0.5

11.9 ± 0.5

2.74 ± 0.02

2.76 ± 0.11

35

17.2 ± 0.9

15.1 ± 0.8

2.45 ± 0.10

2.01 ± 0.14

40

16.9 ± 0.9

18.5 ± 1.1

\(\dagger\)4.32 ± 0.12

\(\dagger\)3.51 ± 0.15

45

14.2 ± 0.8

18.4 ± 1.3

\(\dagger\)5.48 ± 0.06

\(\dagger\)4.69 ± 0.13

50

15.6 ± 1.0

17.5 ± 1.0

\(\dagger\)5.53 ± 0.09

\(\dagger\)5.97 ± 0.09

55

18.3 ± 1.1

18.8 ± 1.1

\(\dagger\)5.52 ± 0.11

\(\dagger\)4.73 ± 0.08

60

19.4 ± 0.9

19.9 ± 0.9

\(\dagger\)6.71 ± 0.11

\(\dagger\)5.24 ± 0.10

65

23.9 ± 0.9

28.0 ± 1.2

\(\dagger\)7.04 ± 0.12

\(\dagger\)6.67 ± 0.10

70

22.2 ± 0.7

23.8 ± 0.9

\(\dagger\)8.19 ± 0.17

\(\dagger\)7.37 ± 0.11

75

26.6 ± 0.7

27.8 ± 0.7

\(\dagger\)9.79 ± 0.17

\(\dagger\)9.10 ± 0.17

80

32.6 ± 0.5

35.4 ± 0.5

\(\dagger\)10.40 ± 0.18

\(\dagger\)11.64 ± 0.27

85

32.7 ± 0.2

35.9 ± 0.4

\(\dagger\)11.11 ± 0.21

\(\dagger\)12.34 ± 0.24

90

37.0 ± 0.4

37.8 ± 0.5

\(\dagger\)11.20 ± 0.24

\(\dagger\)10.37 ± 0.24

95

35.2 ± 0.8

38.3 ± 0.8

\(\dagger\)12.28 ± 0.29

\(\dagger\)14.81 ± 0.41

100

34.8 ± 0.4

42.2 ± 0.9

\(\dagger\)14.84 ± 0.66

\(\dagger\)13.48 ± 0.86

  1. \(\dagger\)Additional ghost sources appear in the resulting image stack
  2. The standard deviation values are obtained through the fitting algorithm