Table 1.
The distribution of positive biopsy rates for each score for T2WI, DWI, or T2WI + DWI
| Score | Cancer regions* | Total regions† | Positive rate (%) |
|---|---|---|---|
| T2WI | |||
| 1 | 2 | 72 | 2.8 |
| 2 | 76 | 507 | 15.0 |
| 3 | 53 | 153 | 34.6 |
| 4 | 30 | 57 | 52.6 |
| 5 | 8 | 9 | 88.9 |
| DWI | |||
| 1 | 72 | 600 | 12.0 |
| 2 | 17 | 84 | 20.2 |
| 3 | 24 | 50 | 48.0 |
| 4 | 42 | 49 | 85.7 |
| 5 | 14 | 15 | 93.3 |
| T2WI + DWI | |||
| 1–2 | 1 | 68 | 1.5 |
| 3–4 | 77 | 571 | 13.5 |
| 5–6 | 38 | 92 | 41.3 |
| 7–8 | 41 | 54 | 75.9 |
| 9–10 | 12 | 13 | 92.3 |
| All | 169 | 798 | 21.2 |
*The prostate tissue regions where biopsy is positive for prostate cancer; †Total prostate tissue regions, ignoring biopsy status. T2WI: T2-weighted imaging; DWI: Diffusion-weighted imaging.