MKI67 and neoplasm: In contrast to the Ki-67 IHC results, the pairwise measurements of relative gene expression and radioactivity for the multiple tumour biopsies within each individual tumour revealed significant positive correlations between Ki-67 gene expression and the uptake of 18F-FDG in all three tumours (Fig 5, right column), while this was only the case for one tumour (no. 3) when correlating to the uptake of 64Cu-ATSM (Fig 5, left column).