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８０例慢性阻塞性肺疾病、肺心病患者和２０例无心肺疾病对照者，用ｒ照相机测定其右室射血分数（ＲＶＥＦ），于８０例患者中选择３０例肺心病患者行ＳｗａｎＧａｎｚ导管检查，以测量肺动脉压等参数。结果：对照组（２０例）、慢性支气管炎肺气肿组（２０例）、肺心病心功能代偿组（３０例）、肺心病右心衰竭组（３０例）４组间ＲＶＥＦ分别为０．４２、０．３７、０．３３、０．２６，均有显著性差异。肺动脉平均压与ＲＶＥＦ呈显著负相关（ｒ＝－０．６１，Ｐ＜００１）；若以ＲＶＥＦ≤０３３为预计肺动脉高压的界值，阳性预计准确性为８２％，阴性预计准确性为６２％。提示放射性核素检测ＲＶＥＦ可能是无创诊断慢性阻塞性肺疾病患者有无肺动脉高压及早期判断其右心功能状况的一种较好方法。
80 patients with chronic obstructive pulmonary disease, patients with cor pulmonale and 20 patients without heart-lung disease were measured by r camera right ventricular ejection fraction (RVEF), 80 patients selected 30 patients with cor pulmonale Swan Ganz catheter Check to measure parameters such as pulmonary arterial pressure. Results: The RVEF of control group (20 cases), chronic bronchitis and emphysema group (20 cases), cor pulmonale (30 cases) and cor pulmonale group (30 cases) .42,0.37,0.33,0.26, there are significant differences. The mean pulmonary artery pressure was negatively correlated with RVEF (r = -0.61, P <001). If RVEF≤033 was the expected value of pulmonary hypertension, the positive predictive accuracy was 82% and the negative predictive accuracy Sex is 62%. The results suggest that radionuclide detection of RVEF may be a better method for noninvasive diagnosis of pulmonary hypertension in patients with chronic obstructive pulmonary disease and early assessment of right ventricular function.