ObjectiveTo investigate the clinical application value of 4 D-RV-Volume in the assessment of rightventricular systolic function in patients with essential hypertension.MethodsEighty-four patients with essential hypertensionwere divided into normal left ventricular mass index（LVMI）group（44 cases）and high LVMI group（40 cases）

45 healthexaminer were chosen as the control group.Left ventricular end diastolic diameter（LVIDD）

left ventricular end systolic diameter（LVESD）

left ventricular posterior wall thickness（LVPWT）

interventricular septal thickness（IVST）

left ventricular ejectionfraction（LVEF）

tricuspid annulus systolic displacement（TAPSE）

ratio of early to late peak velocity（E/A）

pulmonary arterysystolic pressure（PASP）and right ventricular Tei index were recorded. 4 D-RV-Volume technique was used to obtain theparameters of right ventricular end diastolic volume（RVEDV）

right ventricular end systolic volume（RVESV）

right ventricularejection fraction（RVEF）

right ventricular free wall longitudinal strain rate（RVFLS）

interventricular septal longitudinal strainrate（RVSLS）

area change fraction（RVFAC）.The results were compared in groups.ResultsLVIDD

LVESD

LVPWT

IVST

RVEDV

RVESV of the high LVMI group were higher than those of the control group（all P<0.05）

LVEF was lower than that ofthe control group（P<0.05）

TAPSE of the high LVMI group was higher than that of the control group and the normal LVMI group（both P<0.05）

E/A

RVFLS

RVFAC

and RVEF of the control group

the normal LVMI group and the high LVMI group wereall decreased（all P<0.05）

PASP and Tei index were increased（all P<0.05）.RVSLS was lower than that of the normal group and the control group（both P<0.05）.RVEF was negatively correlated with Tei index and PASP（r=-0.513

-0.470

both P<0.05）

andpositively correlated with TAPSE（r=0.607

P<0.05）.RVEDV

RVESV

and RVEF of right ventricle showed good consistency by4 D-RV-Volume technique.Conclusion4 D-RV-Volume technique can be used to quantitatively analyze the structure andfunction of right ventricle in patients with essential hypertension.