Table 2. Definition of the different types of response according to the RECIST criteria used in humans, adapted from Padhani et al.¹⁰⁶.

Response type	RECIST criteria
Complete response (CR)	Disappearance of all target lesions confirmed at 4 weeks
Partial response (PR)	At least 30% reduction of the longest diameter of the lesion
Stable disease (DS)	Neither CR nor PD criteria are met
Progressive disease (PD)	At least 20% increase of the longest diameter of a target lesion