目的　提高对肺血栓栓塞的认识。方法　对经电子束CT及肺通气 灌注扫描证实的 16例肺栓塞患者进行回顾性分析。结果　下肢静脉疾病 6例 ( 37.5% )、慢性心、肺疾病 5例 ( 31.3 % ) ,是引发肺栓塞的主要高危因素 ,无法解释的呼吸困难 ( 81.3 % )和胸痛 ( 56.3 % )是最常见的症状。误诊 11例( 68.8% ) ,死亡 4例 ( 2 5% )。结论　肺栓塞仍是一个误、漏诊率很高的疾病 ,应进一步提高对肺栓塞的诊断意识 Objective To improve the understanding of pulmonary thromboembolism. Methods A retrospective analysis of 16 patients with pulmonary embolism confirmed by electron beam computed tomography and pulmonary perfusion perfusion scan was performed. Results Venous disease in 6 cases (37.5%) and chronic heart and lung disease in 5 cases (31.3%) were the major risk factors for pulmonary embolism. Unexplained dyspnea (81.3%) and chest pain (56.3%) were the most common Symptoms. 11 cases were misdiagnosed (68.8%) and 4 died (25%). Conclusions Pulmonary embolism is still a misdiagnosis and a high rate of misdiagnosis, and the diagnosis of pulmonary embolism should be further improved