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Table 1: 
Mean of blood flow volume measurements for different imaging techniques
Internal Carotid Artery (mL/min) (mean ± SD)Vertebral Artery (mL/min) (mean ± SD)
Color Doppler306.35 ± 131.7876.50 ± 36.69
Power Doppler317.60 ± 118.0185.54 ± 46.47
B-flow US238.84 ± 92.8551.16 ± 27.84Y
MR PC215.59 ± 82.8244.79 ± 23.79
  • Note.—MR PC indicates MR phase-contrast imaging.