Table 6.

Positron Emission Tomography Response Criteria in Solid Tumors (PERCIST)

Response	Criteria
CR	• Disappearance of all metabolically active tumor
PR	• > 30 % decrease in SUL peak (minimum 0.8 unit decrease) in lesion with greatest uptake (not necessarily the same lesion)
PD	• > 30 % increase in SUL peak (minimum 0.8 unit increase) • > 75 % increase in total lesion glycolysis • New lesions
SD	• Does not meet above criteria

CR complete metabolic response, PD progressive metabolic disease, PR partial metabolic response, SD stable metabolic disease, SUL standardized uptake value using lean body mass