Figure 5.

Comparison with reference measurements in a volunteer at rest. A, T₁, T₂, and M₀ maps obtained from an interleaved undersampled (R = 20) spiral MRF acquisition. B, Water T₁ and M₀ maps obtained from a fat‐suppressed IR, water T₂ maps obtained from an MSE sequence with a tri‐exponential fit, and water and fat fraction (F) maps obtained from DIXON (all Cartesian). The water T₁ map obtained with MRF is close to that obtained with fat‐suppressed IR. The T₁ map obtained with IR shows a bright region, for which the fat‐suppression pulse was probably not fully effective. The water T₂ maps obtained with the MSE sequence show shorter values compared with those obtained from the MRF measurements. Note that the fat‐suppressed reference measurements do not deliver information about the fat