Abstract: Objective To explore the value of E-tracking technology ( ET) in evaluating carotid artery elasticity in drinker . Methods One hundred and forty one subjects were enrolled in the study and grouped to 35 ones of non-drink group,35 ones of modicum-drink group,35 ones of moderate-drink group and 36 ones of heavy-drink group,that all of the subjects exclude high bloodpressure,hyperlipidemia,diabetes and serious heart、brain、kidney、hypothyroid disease,carotid arteries have no plaque. Application of E-tracking technology torack real-time polygraph subjects bilateral common carotidarter wall movement, Calculatedanalysis of stiffness parameter(β), epressure-strain elastic coefficient (Eρ),arterial compliance(AC),one-point pulse wave velocity calculate from β (PWVβ), and carry on statistics analysis to various parameters to assess carotid artery elasticity change of drinker. Results Comparison parameter among all groups:with the increase in alcohol consumption,stiffness parameter(β), elasticity modulus(Eρ),one point pulsewave velocity calculated from β value(PWVβ) values gradually increased,arterial compliance(AC)decreased; heavy-drink group、moderate-drink group and non-drink group values in each parameter between groups showed with significant difference(P<0.05)；heavy-drink group、moderate-drink group compare with modicum-drink group,the statistical test with significant difference(P<0.05); the heavy-drink group compare with moderate-drink group,the statistical test with significant difference(P<0.05); modicum-drink group compare with non-drink group with no significant difference(P>0.05),there is no statistical significance. Conclusion Heavy-drink、modicum-drink can bring the decrease of carotid arterial elasticity ,ET technique can early detection the change of carotid artery elasticity .

Key words: Carotid arteries, Elasticity, E-tracking technique, drinking