Table 3. The mean and standard deviation of maximum relative cerebral blood volume (rCBVmax) values corresponding to raw (unaltered) glioblastoma multiforme tumour perfusion series and values normalised by the averaged rCBV in a region of contralateral white matter (nrCBVmax) for each glioma grading.
| Values | Grade II | Grade III | Grade IV | r-value | p-value |
| Mean rCBVmax | 8±2 | 7±2 | 20±11 | 0.662 | <0.0001 |
| Mean nrCBVmax | 7±5 | 4±1 | 12±7 | 0.557 | <0.0001 |
Values of Spearman rank correlation coefficients and Bonferroni corrected p-values are listed. Significance (α=0.05) is denoted by the italic font.