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To measure the pulmonary artery blood flow and evaluate cardiac function by means of cardiopulmonary magnetic resonance (MR) imaging in the study.
20 patients with Chronic obstructive pulmonary disease (10 patients with pulmonary hypertension and 10 patients without) were examined at 3.0Twith a with phase-contrast (PC) imaging. Pulmonary artery blood flow velocity and rate of flow were determined, ejection fractions, end-diastolic volume, end-systolic volume, stroke volume of left and right cardiac were evaluated using cine MRI.
There were no differences between the groups regarding age, height, or weight. In the COPD patients with PAH/without PAH,Pulmonary artery blood flow velocity(83,3＋2.7/62.3+1.6;P = .005),Pulmonary artery blood flow (78.1+23.9/52.4+24.4；P = .002). LV Ejection fractions (64.2+10.7/54.1+14.7;P = .012), LV end-diastolic volume(66.7+26.9/52.5+21.1;P = .03),LV end-systolic volume(24.6+15.2/24.9+16.8;P = .10), LV stroke volume(49.7+12.4/41.1+20.2;P =.05). RV Ejection fractions (48.4+13.4/37.6+23.1;P = .009), RV end-diastolic volume (72.5+22.8/64.6+22.5;P = .032),RV end-systolic volume(41.7+33.1/41.7+26.1;P = .07), RV stroke volume(34.4+8.2/34.2+10.8;P = .082).
Our results reveal that PC-MRI may be useful as a general test to evaluate pulmonary blood flow for patience with COPD.