Fig. 1From: Prospective study of 11C–methionine PET for distinguishing between recurrent brain metastases and radiation necrosis: limitations of diagnostic accuracy and long-term results of salvage treatmentOutcome tree diagram of 37 lesions for which MET-PET was performed to differentiate between LR and RN. Figures in parentheses indicate number of lesions. Halftones indicate the lesions for which MET-PET diagnoses were incorrect or inconclusiveBack to article page