Metabolic activity of the ablated zone decreased markedly after 3 months as compared with that pre-ablation (p=0.001). A few lesions still remained uniformly surrounding high uptake of FDG 3-month post-ablation, but not obviously 9 months later, which pointed to inflammatory response. Increased metabolic activity, new uptake of FDG, and irregular or nodular high uptake of FDG (maximum standard uptake value (SUVmax) ≥3) of the ablated zone after 3 months were all findings concerning recurrence or residual.
Wang Y, Li G, Li W, He X, Xu L.Radiofrequency ablation of advanced lung tumors: imaging features, local control, and follow-up protocol. Int J Clin Exp Med. 2015 Oct 15;8(10):18137-43.上海肿瘤医院影像科
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