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EJNMMI Physics

Table 1 Phantom recovery data for unfiltered images

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 (%)

106 (19.5)

136 (20.2)

155 (19.8)

168 (18.0)

184 (9.5)

186 (8.2)

46.3 (0.51)

TOF (%)

90 (12.0)

123 (11.2)

132 (7.2)

144 (11.0)

157 (11.4)

167 (13.7)

37.4 (0.48)

HD (%)

99 (13.7)

155 (7.2)

144 (6.2)

145 (5.3)

144 (7.1)

147 (6.0)

18.2 (0.32)

UHD (%)

103 (9.0)

151 (8.8)

141 (5.9)

136 (4.5)

135 (5.9)

138 (5.6)

14.9 (0.46)

  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 all four reconstruction algorithms with no post-filtering applied. 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.
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