肺灌注和肺通气显像诊断肺栓塞的临床应用价值

目的:评价肺灌注/通气显像(V/Q)诊断肺栓塞的临床应用价值。方法:临床疑有肺栓塞(PE)的患者60例,男女各30例,平均年龄(43.5±11.3)岁。均行肺V/Q显像及肺动脉造影(CPA)。结果:60例患者中44例肺V/Q显像示肺叶、肺段或多发亚肺段不相匹配的放射性分布稀疏或缺损,提示PE;经肺动脉造影诊断42例为PE,2例排除PE。16例患者的肺V/Q显像肺叶、肺段或多发亚肺段相匹配稀疏或缺损,提示排除PE;肺动脉造影诊断1例为PE,15例排除PE。肺V/Q显像诊断PE的灵敏度为97.7%(42/43例),特异性为83.3%(15/17例)。结论:肺V/Q显像诊断PE是目前临床诊断肺栓塞的最有价值的无创性诊断方法之一,具有安全、无创、简便、经济等优点。

Efficacy analysis of pulmonary and ventilation imaging in patients with pulmonary embolism

Objective To assess the value of ventilation and perfusion imaging in the diagnosis of pulmonary embolism(PE).Method Sixty patients with clinically suspected pulmonary embolism were studied,male∶female = 30∶30,mean age was(43.5±11.3) years.All patients underwent both radionuclide ventilation-perfusion imaging and pulmonary angiography.Results Of the 60 patients,44 with lobe,multiple segment or multiple subsegment perfusion defects and normal or nearly normal ventilation images were reported as PE.42 of them were confirmed to be PE by pulmonary angiography,2 patients were not confirmed.15 of 60 were confirmed to be non-PE by pulmonary angiography,1 patient were confirmed to be with PE.The sensitivity,specificity of diagnosis of PE by ventilation and perfusion imaging was 97.7%,83.3% respectively.Conclusion Pulmonary perfusion and ventilation scan is no invasive,the most valuable method in the diagnosis of pulmonary embolism.