Fig. 16
From: Advanced imaging of colorectal cancer: From anatomy to molecular imaging
Multiparametric evaluation of a 64-year-old patient with rectal cancer, post-therapy. (a) Sagittal fast spin-echo T2-weighted image (left), sagittal diffusion-weighted image with high b-value (b = 800 s/mm2) (center), and ADC map showed a reduction of tumour volume and increased ADC values. (b) Perfusion MRI-related parametric maps (transfer constant, Ktrans and return constant, kep) and gadolinium concentration/time curve of the tumour evidenced decreased perfusion within the tumour and a change in the type of curve (type 1 curve). (c) MR spectroscopy did not depict any metabolite peak. (d) Sagittal 18F-FDG-PET image evidenced a decreased uptake of glucose in the tumour (red arrow). All these features indicated partial tumour response