【摘要】 目的 探讨B型超声对肺不张的诊断价值。 方法 对2007年5月-2009年5月收治的67例肺不张患者的CT诊断与B型超声诊断进行对照、分析、总结。 结果 B型超声诊断一侧肺不张和肺叶肺不张与CT诊断符合率为94.64%，肺段型肺不张诊断符合率为54.55%。 结论 B型超声诊断可作为肺不张筛查的首选诊断方法。【Abstract】 ObjectiveT o study the diagnostic value of atelectasis by type-B ultrasonography. Methods Data of 67 cases of patients with atelectasis diagnosed by type-B ultrasonography and CT were compared, analyzed, and summarized between May 2007 and May 2009. Results The diagnosis coincidence rate which was got by comparing ultrasonography diagnosis of the one side atelectasis and pulmonary lobectomy atelectasis with CT diagnosis was 94.64%, and that of pulmonary segmental atelectasis was 54.55%. Conclusion Type-B ultrasonography can be used as the preferred screening atelectasis diagnosis.