Fig. 3
a Forrest plots of the mean apparent diffusion coefficients of clinical insignificant PC comprising Gleason score 5 and 6. The pooled mean ADC value was 1.10 × 10− 3 mm2/s [95% CI 1.03–1.18]. b. Forrest plots of the mean apparent diffusion coefficients of clinically significant PC comprising Gleason score 7 and higher. The pooled mean ADC value was 0.96 × 10− 3 mm2/s [95% CI 0.83–0.90]. c. Box plots of the mean ADC values of clinical insignificant and clinically significant PC. Clinical insignificant PC have lower ADC values than clinically significant PC.