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Table 1 Properties of pulse wave dynamics of the carotid artery and aortic arch.

From: Leveling of arterial wall stiffness between aortic arch and left carotid artery due to aging is associated with reduced volume flow towards the brain: pulse wave velocity evaluation with high-field velocity-encoded MRI

  Young Old p
Trajectory aortic arch (mm) 99 ± 17 132 ± 17 <0.001
Trajectory left carotid artery (mm) 175 ± 11 173 ± 12 0.65
PWVaorta (m/s) 4.9 ± 0.7 7.4 ± 1.4 <0.001
PWVcarotid artery (m/s) 5.7 ± 1.0 6.9 ± 1.5 0.002
Ratio (PWVcarotid artery/PWVaorta) 1.2 ± 0.2 1.0 ± 0.2 0.006
Cardiac output (ml/beat) 94 ± 22 87 ± 12 0.30
Carotid stroke volume    
Common carotid artry (ml/beat) 7.7 ± 1.9 7.7 ± 2.0 0.99
Internal carotid artery (ml/beat) 5.6 ± 1.4 4.7 ± 1.3 0.06
Relative reduction (%) 26 ± 12 39 ± 8 0.002