Fig. 4

Low- and intermediate-risk PCa with PSA > 9.4 ng/ml and age > 62.5 years, who are mpMRI (−) and ⁶⁸Ga-PSMA PET/CT (+). A 73-year-old patient whose serum PSA level was 17.9 ng/ml and whose GS was 3 + 4. There is no lesion in the prostate gland in the pelvic MRI scan (a T2w; b b 1500 DWI), while in the ⁶⁸Ga-PSMA PET/CT, there is a strong tracer uptake highly likely to be diagnosed (arrow in e and f). a–c MRI; d–f ⁶⁸Ga-PSMA PET/CT; a T2w; b b 1500 DWI; c ADC map; d low-dose CT; e maximum intensity projection of the PET; f fusion of ⁶⁸Ga-PSMA PET and low-dose CT