Fig. 3

Positron emission tomography/computed tomography (PET/CT) scans before proton beam therapy (PBT) (A). A solid tumor with the abnormal accumulation of 2-deoxy-2-(18F)fluoro-d-glucose (SUVmax = 19.44) was observed adjacent to the left renal vein (B). A dose distribution curve of the axial and sagittal sections C orange, purple, pink, green, yellow, sky blue, and dark blue lines in the circle represent doses of 5225, 4950, 4400, 3850, 2250, 1650, and 550 cGyE, respectively, which were delivered to the patient over the course of the PBT regimen. PET/CT scans of the para-aortic lesion after PBT (D). The recurrent para-aortic lesion was completely eradicated