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MRI parametric maps for a stage IV HNSCC patient with a zoomed nodal ROI region. Transverse relaxation rate R2* (A), Ktrans (B) and binary maps (C: MR1, D: MR2, two MR sessions 48 hours apart) showing spatial distribution of spontaneous non-Gaussian R2* fluctuations (white voxels) for a nodal ROI (Patient No 5, N2).
