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Quantitative T1 maps from an axial slice of our multiparametric 3D MRF acquisition, comparing fully sampled data with maps obtained acquiring only 8% of k‐space. Zero filling generates artifacts due to nonuniform sampling of k‐space; density correction of the zero‐filled data recovers the details in the image but results in a noisy map; sharing k‐space points between neighboring time frames reduces the noise.
