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Table 4 Quantitative 4D flow results

From: Doppler ultrasound cardiac gating of intracranial flow at 7T

  4D flow M1a
ECG   DUS
Net volume (ml) 1.8 ± 0.48   1.9 ± 0.59
Bias ± 1.96SD   − 0.086 ± 0.57  
Mean flow (ml/s) 2.0 ± 0.48   2.0 ± 0.62
Bias ± 1.96SD   − 0.071 ± 0.58  
Mean velocity (cm/s) 28 ± 6.8   29 ± 8.8
Bias ± 1.96SD   − 0.077 ± 14  
Peak velocity (cm/s) 84 ± 25   77 ± 34
Bias ± 1.96SD   7.6 ± 44  
  1. aBoth M1 branches of the middle cerebral artery (MCA). Direction of positive flow is away from the CoW