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Table 2 Phantom recovery data

From: Impact of point spread function modelling and time of flight on FDG uptake measurements in lung lesions using alternative filtering strategies

 

Sphere size

Background voxel COV

 

10 mm

13 mm

17 mm

22 mm

28 mm

37 mm

OSEM

53

80

96

102

110

110

12.9

Matched voxel COV

       

 TOF (%)

58 (4.4)

84 (3.4)

97 (3.2)

101 (2.4)

110 (2.4)

113 (3.8)

12.8 (0.23)

 HD (%)

73 (7.1)

123 (4.5)

122 (2.9)

121 (5.3)

121 (3.8)

123 (2.8)

12.8 (0.38)

 UHD (%)

89 (6.6)

138 (7.5)

129 (3.1)

123 (2.7)

125 (4.0)

127 (4.2)

12.7 (0.43)

Matched SUVmax

       

 TOF (%)

55 (3.8)

80 (2.8)

94 (2.9)

98 (1.8)

107 (2.3)

110 (2.9)

11.2 (0.37)

 HD (%)

47 (3.0)

80 (2.3)

103 (2.7)

102 (3.5)

105 (1.3)

106 (0.9)

7.57 (0.17)

 UHD (%)

49 (1.9)

81 (1.8)

102 (2.0)

100 (1.2)

104 (2.0)

105 (1.2)

6.27 (0.33)

  1. SUVmax in each of the image quality spheres expressed as a percentage of the true activity concentration, and voxel COV in the phantom background. Data are shown for OSEM (reference reconstruction) and the PSF and TOF-based reconstructions with the two post-filter sets. Values are mean and standard deviation (SD) obtained from the replicates, with the latter shown in parentheses. For clarity, the SD shown is the SD across the replicates expressed as a percentage of the true activity concentration in the sphere.