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Diffusion weighted MRI DWI
DWI can generate apparent diffusion coefficient ( ADC) maps which characterize the diffusion
environnement on a voxelwise basis.
Regions of diffusion restriction result from tumor hypercellularity : sequestration of fluid into the
intracellular compartment and decreased extracellular space.
Based on biopsys and resection sample : cellularity, nuclear-cytoplasmic ratio and tumor grade
are inversely propotional to ADC.
T1 gado
DW MRI
ADC