Figure 3

Multiparametric imaging of the brain derived from ultrafast Doppler acquisitions. UfD Power signals (1^st row) display intensities proportional to cerebral blood volume. UfD relative signals (2^nd row) provide the percentage of increase or decrease in cerebral blood volume with respect to baseline level. UfD resitivity maps (3^rd row) the ratio of the range of arterial velocity during the cardiac cycle to the arterial systolic peak velocity. The first column (t = −19 min 40 s) presents baseline state, the second column (t = ~4–6 min) presents the brain status immediately after resuscitation, the third column (t = 12 min) reports brain condition at maximal hyperemia, and the last column (t = 63 min 40 s) presents brain condition one hour after CPR. (a) Control group. (b) TLV group.