Abstract: This study compared the acoustic quantification(acoustic quantification,AQ) with the conventional echocar-diographic parameters,to evaluate the changes of the left ventricular function in patients with essential hypertension.A total of 30 control subjects,45 patients with essential hypertension(EH) including patients without left ventricular hypertrophy(N-LVH) and patients with left ventricular hypertrophy(LVH) were divided into 3 groups.The three groups were measured by conventional echocardiographic parameters and AQ technique.DBP,LVM,LVMI,IVS,IVPW and LA showed significantly different among the three groups(p<0.05).Compared with control subjects,the VE/VA and RF/AF in N-LVH group and LVH group were decreased,AFF and LVESV in N-LVH group and LVH group were higher(p<0.05).Compared with control subjects,RFF in LVH group was lower,PAFR,LVEDV and OAFV in LVH group was higher.The non-paired T test was adopted to compare EF in the conventional echocardiographic indices and EF in the AQ index,the result showed that the latter EF was lower than the former one,and the difference was statistically significant(p<0.05).As a new assessment method of diastolic dysfunction,AQ echnology can be regarded as a complement to the traditional Doppler echocardiography,combining with the two methods can effectively improve the clinical diagnosis of left ventricular diastolic dysfunction.