Fig. B.

Second case of accelerated dynamic ASL with model-based reconstruction, single-shot 3D spiral k-space trajectories and background suppression. Results from the first case are shown in Fig. 10. The residual in the 60s scan and conventional reconstruction with gridding method (mean residual = 4.2e-6) was reduced by the model-based constraint (mean residual = 2.3e-6). The quality of images was maintained with 40 s / OT (mean residual = 2.7e-6) and 20 s / OT (mean residual = 4.3e-6). Units: Dynamic model fitting residual (a.u.). CBF maps (ml/100g/min). ATT maps (seconds).