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. Author manuscript; available in PMC: 2015 Feb 7.
Published in final edited form as: Phys Med Biol. 2014 Jan 17;59(3):541–559. doi: 10.1088/0031-9155/59/3/541

Table 1.

Measured spatial resolution for each point source based on different system models.

(a) Radial FWHMs (mm)
Axial position 0 cm
Radial distance 0 cm 6 cm 12 cm 18 cm 24 cm
TOF-acc 2.53 2.53 2.59 3.00 3.58
TOF-Siddon/R+ 2.57 2.70 2.71 3.27 3.68
TOF-Bresenham/R+ 2.44 2.67 2.76 3.33 3.78
Axial position 6 cm
Radial distance 0 cm 6 cm 12 cm 18 cm 24 cm
TOF-acc 2.99 3.22 3.15 3.67 4.28
TOF-Siddon/R+ 3.15 3.21 3.45 3.83 4.44
TOF-Bresenham/R+ 2.98 3.07 3.74 3.81 4.47
(b) Tangential FWHMs (mm)
Axial position 0 cm
Radial distance 0 cm 6 cm 12 cm 18 cm 24 cm
TOF-acc 2.50 2.44 2.61 2.79 2.99
TOF-Siddon/R+ 2.58 2.59 2.65 3.00 3.28
TOF-Bresenham/R+ 2.48 2.66 2.69 3.01 3.30
Axial position 6 cm
Radial distance 0 cm 6 cm 12 cm 18 cm 24 cm
TOF-acc 2.59 2.70 2.51 2.61 2.80
TOF-Siddon/R+ 2.70 2.75 2.69 2.72 3.16
TOF-Bresenham/R+ 2.57 2.72 2.78 2.77 3.27
(c) Axial FWHMs (mm)
Axial position 0 cm
Radial distance 0 cm 6 cm 12 cm 18 cm 24 cm
TOF-acc 2.22 2.37 2.33 2.30 2.31
TOF-Siddon/R+ 2.26 2.49 2.42 2.51 2.46
TOF-Bresenham/R+ 2.27 2.51 2.44 2.56 2.46
Axial position 6 cm
Radial distance 0 cm 6 cm 12 cm 18 cm 24 cm
TOF-acc 3.68 3.11 3.23 3.30 3.33
TOF-Siddon/R+ 3.77 3.55 3.30 3.42 3.58
TOF-Bresenham/R+ 3.75 3.54 3.29 3.51 3.66