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Combined positron emission tomography/computed tomography (PET/CT) and CT modalities used in the follow-up imaging protocol after ablation. Initial PET/CT is required for staging. Thereafter, chest CT with CT nodule densitometry through the ablation zone is performed at 1 to 2 months, PET/CT at 3 months, and thereafter alternating every 3 months with chest CT for up to 2 years.
