Table 7. Modified RECIST criteria used to evaluate treatment response.

Effectiveness	CT (size)	CT (density)	PET
Complete ablation	Disappears or shrinks	Without an enhanced zone	Without a metabolic zone
Incomplete ablation	Remains unchanged	No change in the enhanced zone	With a highly metabolic zone, which remains unchanged
Local progression	Enlarged by 10 mm	Enlarged enhanced zone	Newly developed highly metabolic zone or the highly metabolic zone becomes enlarged

RECIST, Response Evaluation Criteria in Solid Tumors; CT, computed tomography; PET, positron emission computerized tomography.