The cerebral vascular of pulse index (PI), resistance index (RI), and predict intracranial cerebral pressure (pICP) at T0/T6 were 72 ± 18/71 ± 14, 0.76 ± 0.27/0.81 ± 0.21, 0.49 ± 0.11/0.52 ± 0.08, 7 ± 3/8 ± 2.