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EJNMMI Physics

Table 2 Spatial resolution and magnitude of Gibbs artifacts (GA)

From: The influence of different signal-to-background ratios on spatial resolution and F18-FDG-PET quantification using point spread function and time-of-flight reconstruction

 

Spatial resolution (mm)

GA (%; diameter, 50/70 mm)

SBR1

  

 FBP

6.8 (6.7 to 6.9)

0.0/0.4

 FBP + TOF

6.8 (6.7 to 6.8)

0.0/0.1

 3D-OSEM

5.0 (4.9 to 5.1)

0.7/0.5

 3D-OSEM + TOF

5.5 (5.4 to 5.5)

0.7/0.7

 PSF

4.1 (4.0 to 4.2)

7.3/6.3

 PSF + TOF

4.0 (3.9 to 4.0)

7.4/6.3

SBR2

  

 FBP

6.7 (6.7 to 6.8)

0.1/0.3

 FBP + TOF

6.7 (6.7 to 6.8)

0.0/0.2

 3D-OSEM

5.7 (5.6 to 5.9)

1.4/1.2

 3D-OSEM + TOF

5.7 (5.6 to 5.8)

0.7/1.2

 PSF

5.3 (5.2 to 5.5)

5.0/4.6

 PSF + TOF

5.0 (5.0 to 5.1)

5.1/5.0

SBR3

  

 FBP

7.0 (6.8 to 7.2)

0.1/0.2

 FBP + TOF

7.1 (6.9 to 7.3)

0.0/0.0

 3D-OSEM

6.7 (6.5 to 7.0)

0.2/1.2

 3D-OSEM + TOF

6.7 (6.6 to 6.9)

0.5/1.2

 PSF

6.9 (6.7 to 7.2)

1.6/2.6

 PSF + TOF

6.4 (6.1 to 6.6)

2.6/2.7

  1. Mean (range) spatial resolutions of all spheres and GA of the two largest spheres are displayed for each SBR and reconstruction method based on 3-mm slice thickness.
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