Fig. 3From: The diagnostic value of PET/CT imaging with the 68Ga-labeled PSMA-ligand in the follow up assessment of prostate cancer after therapyAxial non-contrast CT and PET-CT images for a 79-year-old male patient with history of prostate cancer for which he had radiotherapy and hormonal therapy. Images a and b showed 68Ga-PSMA activity by small prostatic lesion with SUVmax = 2.5 (red arrows) suggesting small residual neoplastic lesion. Images c–f showed 68Ga-PSMA activity by multiple small bilateral external and common iliac LNs; the most active shows SUVmax = 15.4 (blue arrows). The PET-CT revealed metastatic deposits in the iliac lymph nodes despite their subcentimetric size in CT. Images g and h showed multiple sclerotic osseous lesions involving the right iliac bone and sacrum with no 68Ga-PSMA activity (green arrows) denoting inactive metastatic lesionsBack to article page