Fig. 1From: Monitoring bone and soft-tissue tumors after carbon-ion radiotherapy using 18F-FDG positron emission tomography: a retrospective cohort studyAn undifferentiated sarcoma occurred in the chest wall of a 74-year-old male. A small enhanced lesion persisted three months after CIRT (a), and the size of the lesion increased on MRI performed five months after CIRT (b). FDG-PET/CT showed no change in the FDG accumulation between before (c) and after the recurrence (d)Back to article page