Figure 4:

Comparison of the MS-3DSSFP sequence with a 3D MS-GRE sequence on a healthy rat with hyperpolarized [1-¹³C]pyruvate injections using experiment A (pyruvate and alanine: MS-GRE; lactate: MS-3DSSFP) and experiment B (pyruvate, lactate and alanine: MS-GRE). Experiment parameters are described in Table 1. AUC maps of each metabolite are displayed at the maximum signal across slices. B0 maps were thresholded using a mask removing the pixels with SNR lower than 3 in the water magnitude images. B0 maps colorbar is displayed at the bottom. Lactate-to-pyruvate AUC ratio maps of the kidney slices are shown and thresholded using a mask removing the pixels with SNR lower than 3 in the lactate or pyruvate magnitude image.