Median values of the maximal perfusion parameters and coefficient of variation for different grades of gliomas using a 2D gradient-recalled echo sequence on a 1.5T MR imaging scanner
| No. | Ktrans_ϕ(min−1) (95% CI) | CV(%) | Ktrans_SI(min−1) (95% CI) | CV(%) | Vp_ϕ (mL/100 g) (95% CI) | CV(%) | Vp_SI (ml/100 g) (95% CI) | CV(%) | |
|---|---|---|---|---|---|---|---|---|---|
| Grade 2 | 8 | 0.0086 (0.0010–0.047) | 153 | 0.0032 (0.00056–0.17) | 210 | 0.66 (0.091–1.55) | 91 | 1.35 (0.22–6.9) | 143 |
| Grade 3 | 4 | 0.020 | 142 | 0.0052 | 191 | 1.37 | 105 | 2.8 | 114 |
| Not defined | Not defined | Not defined | Not defined | ||||||
| Grade 4 | 19 | 0.10 (0.072–0.13) | 46 | 0.13 (0.073–0.23) | 85 | 2.0 (1.7–3.1) | 78 | 8.8 (5.3–14) | 76 |