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EJNMMI Physics

Table 3 Spatial resolution (FWHM) in mm determined using the NEMA PET body phantom

From: Comparison of image quality and spatial resolution between 18F, 68Ga, and 64Cu phantom measurements using a digital Biograph Vision PET/CT

 

≈ 4:1 contrast; normal weight setup: mean ± STD (mm)

≈ 4:1 contrast; obese setup: mean ± STD (mm)

≈ 8:1 contrast; normal weight setup: mean ± STD (mm)

≈ 8:1 contrast; obese setup: mean ± STD (mm)

18F-FDG

4.55 ± 0.18

4.83 ± 0.32

4.10 ± 0.21

4.21 ± 0.24

68Ga-HCl

5.35 ± 0.19

5.35 ± 0.33

4.83 ± 0.16

4.87 ± 0.24

64Cu-HCl

4.35 ± 0.20

4.55 ± 0.19

4.17 ± 0.30

4.30 ± 0.20

  1. Spatial resolution is represented by the mean and standard deviation (STD) of the full width at half maximum (FWHM) of all six spheres (in mm) of the NEMA PET body phantom filled with 18F-FDG, 68Ga-HCl, or 64Cu-HCl at sphere-to-background activity concentration ratios of approximately 4:1 or 8:1 and with applied cooling packs around the phantom (obese setup) or without (normal weight setup)
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