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. Author manuscript; available in PMC: 2018 May 31.
Published in final edited form as: Pediatr Neurol. 2017 May 8;74:15–23.e5. doi: 10.1016/j.pediatrneurol.2017.04.026

Table 3.

Reproducibility of TCD Data.

Vessel Velocity r (p-value) Pulsatility Index r (p-value)

MCA Percent Side-to-Side Difference 0.79 (0.04) −0.25 (0.59)

PCA Percent Side-to-Side Difference 0.90 (0.04) −0.30 (0.62)

ACA Percent Side-to-Side Difference 0.54 (0.22) 0.82 (0.02)

Vessel PSV (peak systolic velocity) r (p-value) EDV (end-diastolic velocity) r (p-value)

MCA Affected 0.60 (0.21) 0.77 (0.07)
  MCA Unaffected 0.77 (0.07) 0.26 (0.62)

PCA Affected 0.90 (0.04) 0.60 (0.30)
  PCA Unaffected 0.70 (0.19) 0.90 (0.04)

ACA Affected 0.10 (0.87) 0.20 (0.75)
  ACA Unaffected 1.00 (0.01) 0.87 (0.05)

r – Spearman’s rho correlation coefficient

p-value – two-tailed significance value