Figure 5. Scatter diagrams of day 0 plotted against day 2 for (a) mean volume transfer blood plasma and interstitial tissue (k_fp), (b) the 97.5 percentile of k_fp, (c) mean relative cerebral blood volume calculated from T₁ weighted dynamic images and corrected for contamination by contrast agent leakage () and (d) the 97.5 percentile of , measured from five gliomas. Intra-class correlation coefficients (r₁) were calculated for each pair of repeated measurements on day 0 and day 2. *, Grade III anaplastic astrocytoma (GIII); , Grade VI glioblastoma multiforme (GM). Line of identity (solid line): day 0=day 2. C.U. is a unit of accumulated contrast agent concentration (mmol x s l^-1).