Table 1:

Values of blood flow Doppler parameters with their tolerance interval limits given for MCA, ACA, and tICA obtained in 56 children with SCD

ParametersMCAACAtICA
LeftRightLeftRightLeftRight
VPS
    Mean (cm/s)179 ± 27b185 ± 28b143 ± 34b152 ± 30b164 ± 27169 ± 24
    Tolerance interval (cm/s)117–240120–25066–22084–220103–225114–225
    % of the Mean65–13465–13546–15455–14563–13767–133
VMN
    Mean (cm/s)131 ± 21133 ± 20106 ± 25b111 ± 22b120 ± 21123 ± 19
    Tolerance interval (cm/s)83–17988–17849–16360–16161–17578–167
    % of the Mean63–13766–13446–15454–14551–14663–136
VED
    Mean (cm/s)92 ± 1890 ± 1772 ± 1874 ± 1683 ± 1683 ± 16
    Tolerance interval (cm/s)50–13352–12831–11337–11247–11947–120
    % of the Mean54–14558–14244–15750–15157–14356–143
PI
    Median (range)0.64c–0.800.74c–0.870.65c–0.620.71c–0.860.66c–0.980.72c–0.96
    Tolerance interval0.41–1.210.44–1.310.38–1.000.45–1.310.43–1.200.44–1.40
    % of the Mean61–17961–18155–14563–18162–17462–197
  • a Limits of tolerance intervals for each Doppler parameter are also provided as a percentage of the mean to better disclose the magnitude of limits.

  • b Statistically significant between-sides difference where the P value is <.05 (t test).

  • c Statistically significant between-sides difference where the P value is <.05 (Wilcoxon test).