Skip to main content

Table 1 The impact of a Gaussian post-smoothing filter with a kernel width of 1–7 mm on RCmean and RCmax for a TOF PET reconstruction with 4 × 4 × 4 mm3 voxels, without PSF modelling. RCs within EARL accreditation specifications are marked in italic style

From: Digital PET compliance to EARL accreditation specifications

Recon EARL minimum EARL maximum No filter Filter
1 mm
Filter
2 mm
Filter
3 mm
Filter
4 mm
Filter
5 mm
Filter
6 mm
Filter
7 mm
Sphere diameter (mm)
  RCmean
 10 0.27 0.38 0.34 0.33 0.32 0.30 0.28 0.26 0.24 0.22
 13 0.44 0.60 0.52 0.51 0.49 0.48 0.45 0.42 0.39 0.35
 17 0.57 0.73 0.67 0.65 0.65 0.64 0.61 0.58 0.55 0.52
 22 0.63 0.78 0.73 0.72 0.72 0.71 0.69 0.67 0.64 0.62
 28 0.72 0.85 0.77 0.77 0.77 0.77 0.76 0.74 0.72 0.71
 37 0.76 0.89 0.82 0.81 0.81 0.80 0.80 0.78 0.77 0.76
  RCmax
 10 0.31 0.49 0.52 0.51 0.49 0.46 0.42 0.38 0.34 0.31
 13 0.59 0.85 0.81 0.80 0.77 0.73 0.68 0.63 0.57 0.51
 17 0.73 1.01 0.93 0.92 0.91 0.89 0.86 0.82 0.77 0.72
 22 0.83 1.09 0.96 0.96 0.94 0.92 0.91 0.90 0.89 0.87
 28 0.91 1.13 0.98 0.98 0.96 0.96 0.94 0.93 0.92 0.91
 37 0.95 1.16 0.98 0.98 0.97 0.96 0.95 0.94 0.94 0.94