Table 1 Lesion-level patterns of progression defined. Progressing lesions includes lesions that are progressing between baseline and follow-up, as well as new lesions identified at follow-up imaging21.

From: Quantitative [68Ga]Ga-PSMA-11 PET biomarkers for the analysis of lesion-level progression in biochemically recurrent prostate cancer: a multicentre study

Progression criteria

Patients with ≤ 3 baseline lesions

Patients with > 3 baseline lesions

Systemic

 ≥ 2 lesions with PD

 ≥  3 lesions with PD

Mixed

1 lesion with PD

 ≤ 2 lesions with PD

No progression

No PD in any lesion

No PD in any lesion

  1. PD, Progressive disease.