Fig. 2.

¹⁸F-FDG-PET/CT images. (A) Maximal intensity projection (MIP) in the early phase: focal FDG uptake (black arrow) in the right sublingual gland mass and slight FDG uptake (black arrowhead) in the lower lobe of the left lung. (B and C) Fused axial CT and FDG-PET image (mediastinal window) in the early phase, showing in the different SUV scales: focal FDG uptake (white arrow) in the right sublingual gland mass, with the SUVmax 10.5. (D and E) Fused CT and FDG-PET image (lung window) of the larger nodule in the early phase: (D) axial image, (E) coronal image: slight FDG uptake (black arrow) with the SUVmax 2.6. (F) Fused axial CT and FDG-PET image (lung window) of the smaller nodule in the early phase: almost no FDG uptake (black arrow).