Figure 3.

Magnetic resonance fingerprinting and reference measurements in a phantom. 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 inversion recovery (IR), water T₂ maps obtained from a multiple spin‐echo (MSE) sequence with a tri‐exponential fit, and a water and fat fraction (F) map obtained from DIXON (all Cartesian). The water T₁ maps and the water and fat fraction maps obtained with MRF are close to that obtained with fat‐suppressed IR and DIXON. The water T₂ maps obtained with the MSE sequence show shorter values compared with those obtained from the MRF measurements. The fat T₁, T₂, and M₀ maps are not shown for the standard methods, as fat suppression was used in the acquisition (IR) or during data processing (MSE)