Objective To compare the application value of echocardiography and CT pulmonary angiography（CTPA）in monitoring right ventricular function and pulmonary vascular pressure in pulmonary hypertensio（PH）.Methods Rightventricular function and pulmonary vascular structure were measured by echocardiography and CTPA in 42 patients with PH

the correlation was analyzed.Right ventricular ejection fraction（RVEF）

right ventricular area change rate（RVFAC）

tricuspidannulus systolic displacement（TAPSE）

right ventricular myocardial function Tei index（RV Tei）in patients with differentdegrees of PH were measured and compared.Results Right atrial transverse diameter

right atrial upper and lower diameter

the values of right ventricular basal segment inner diameter

right ventricular anterior wall thickness and the ratio of rightventricular transverse diameter and heart transverse diameter were measured by CTPA were significantly higher than those byechocardiography（all P<0.05）.The results of two methods had a certain correlation（r=0.381

0.434

0.416

0.546

0.486

allP<0.05）.The diameter of pulmonary artery trunk and the ratio of main pulmonary artery diameter to ascending aorta diameter（rPA）measured by CTPA were higher than those by echocardiography（all P<0.05）

and the results of two methods werepositively correlated（r=0.453

0.422

both P<0.05）.There were significant differences in the RVEF

RVFAC

RV Tei index ofpatients with different degree of PH（all P<0.05）.Conclusion Both echocardiography and CTPA can be used to monitor theright ventricular function and pulmonary vascular pressure in PH patients

but echocardiography can also directly monitor thepulmonary vascular pressure

which has higher clinical application value.