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the aim of this study is the characterization of carotid
artery by analysis of blood-flow velocity waveforms. To
characterise this vessel, we have estimate its transfer function
and we have calculate noninvasively pulsatile and resistance
index, after and before carotid bifurcation. The bloodflow
velocity waveforms measured by phase contrast
magnetic resonance imaging on 20 subjects. Our results
showed that the transfer function is a second order for a
young subjects (22±2ans) and is a first or second order for
an aged subject (>60 years) it confirms that with age the
arterial rigidity increases.