Kaplan-Meier curves for response assessment by conventional imaging modalities and positron emission tomography. Progression-free survival according to the information provided by the response assessment using (A) conventional imaging modalities in accordance to the recommendations given by Cheson et al.
, (B) visual response assessment of interim PET using the recommendations given by Juweid et al. on behalf of the IHP
, and (C) relative decrease in SUVmax between baseline and interim PET. PFS, progression-free survival; CR, complete response; CRu, complete response unconfirmed; PR, partial response; SD, stable disease; Δ SUVmax, decrease in maximum standardized uptake value between staging and interim PET; neg., negative; pos., positive.