In the article “Evaluation of 68Ga-PSMA PET/CT with Volumetric Parameters for Staging of Prostate Cancer Patients” [1] a citation was unintentionally omitted by the authors. The sentence that reads “The areas with 68Ga-PSMA involvement were drawn separately in 3D, for prostate, lymph node, bone and other distant metastases with a 40% SUVmax threshold semi-automatically (Figure 2) with LIFEx software” on page 504 should have been cited with the following citation [2]: C Nioche, F Orlhac, S Boughdad, S Reuzé, J Goya-Outi, C Robert, C Pellot-Barakat, M Soussan, F Frouin, and I Buvat. LIFEx: a freeware for radiomic feature calculation in multimodality imaging to accelerate advances in the characterization of tumor heterogeneity. Cancer Research 2018; 78(16):4786-4789.

1. Aksu A, Şen NPK, Tuna EB, Aslan G, Kaya GC. Evaluation of 68Ga-PSMA PET/CT with volumetric parameters for staging of prostate cancer patients. Nucl Med Commun. 2021; 42:503–509. 2. Nioche C, Orlhac F, Boughdad S, Reuzé S, Goya-Outi J, Robert C, et al. LIFEx: a freeware for radiomic feature calculation in multimodality imaging to accelerate advances in the characterization of tumor heterogeneity. Cancer Res. 2018; 78:4786–4789.