Fig. 1

Sphere activity profiles (37 mm). Radial activity profiles of the 37 mm sphere are displayed for signal-to-background ratio (SBR) 8:1 with the respective reconstructed spatial resolution (full width at half maximum, FWHM)
Sphere activity profiles (37 mm). Radial activity profiles of the 37 mm sphere are displayed for signal-to-background ratio (SBR) 8:1 with the respective reconstructed spatial resolution (full width at half maximum, FWHM)