“…In terms of LC and survival, smaller tumor size, good performance status, non-squamous cell carcinoma histology, lesion SUVmax ≤ 5, the presence of oligometastases, response, and BED 10 values have been reported as favorable factors in many studies [ 4 , 11 , 12 , 26 ]. In a Spanish study, for early-stage lung cancer, CR was 54% with CT or PET/CT at 3 months following SBRT, and only CR was associated with local and distant control [ 28 ]. Increased glucose metabolism on PET/CT was also reported to be significant for CR (59% vs. 31%).…”