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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.