Figure 11. Representative images from a multifunctional study of a patient with a locally advanced rectal carcinoma (outlined by the yellow arrows). (a) Axial T₂ section through the section of the tumour at mid-rectal level. The soft tissue mass superior to the tumour is a recently gravid uterus. (b) The parametric permeability (capillary leakiness) map of the same tumour. Each pixel in the tumour is colour coded according to the amount of permeability (white–high, blue–low). (c) The perfusion map. High signal intensity pixels correspond to a high relative perfusion. The data indicate a poorly perfused tumour. Note the high perfusion of the recently gravid uterus. (d) The apparent diffusion coefficient map. Areas of high signal intensity indicate restricted diffusion. These functional data were acquired during the same scanning session in under 1 h.