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Table 4 Tumor recurrence/residual detected by 68Ga-labelled PSMA-ligand PET/CT in reference to the clinical and/or PSA level and/or radiological follow-up and/or the histopathological assessment for the patients, with the number (No.), percent (%) of the patients

From: The diagnostic value of PET/CT imaging with the 68Ga-labeled PSMA-ligand in the follow up assessment of prostate cancer after therapy

Tumoural residual/recurrence by PET/CT

Positive by the reference methods (n = 29)

Negative by the reference methods (n = 1)

Positive (n = 28)

28 patients (TP)


0 patient (FP)


Negative (n = 2)

1 patient (FN)


1 patient (TN)


  1. TN true negative, TP true positive, FN false negative, FP false positive