Figure 1.
Simplified decay scheme of I-124 with a transition probability >3%, *maximal energy (β+: positron emission, γ: gamma emission, X: x-ray emission, ε: electron capture).
Table 1.
Specific activities and sphere-to-background-ratios used in PET-measurements.
Figure 2.
Relative contrast of F-18, Ga-68 and I-124 with and without PGC as a function of sphere diameter.
Reconstruction iterative with scatter correction and a Gauss-filter with a FWHM of 2 mm and a S∶BG≈10∶1.
Figure 3.
RC of I-124 with PGC depending on post-reconstruction filtering as a function of sphere diameter.
Reconstruction iterative with scatter correction and a S∶BG = 9.9∶1.
Figure 4.
RC of F-18, Ga-18 and I-124 with and without PGC as a function of sphere diameter.
Reconstruction iterative with scatter correction and a Gauss-filter with a FWHM of 2 mm and a S∶BG≈10∶1.
Figure 5.
Sinograms of I-124 phantom images with PGC (right) and without PGC (left), top: with background activity, bottom: without background activity.
Figure 6.
Transaxial views of I-124 phantom images with PGC (right) and without PGC (left), top: with background activity, bottom: without background activity.