Fig. 5
From: SUV variability in EARL-accredited conventional and digital PET
Axial FDG-PET/CT images (a, b and c) from a lung cancer patient with bilateral adrenal gland metastases showing higher SUVs on the dPET scan (b) that was acquired 24 min after the cPET scan (a). The left-gland metastasis (diameter 11 mm) showed ΔSUVs of 7% (SUVmean), 10% (SUVpeak) and 15% (SUVmax). ΔSUVs of the right-gland metastasis (diameter 14 mm) were 13% (SUVmean) and 11% (SUVpeak and SUVmax). In this case the impact of the digital scanner cannot be separated from the SUV rise caused by the prolonged FDG-uptake. Meanwhile, the visual image quality of both PET scans appeared comparable in terms of image noise, texture and FDG-uptake as intended with an EARL-compatible protocol