【摘要】 目的 探討B型超聲對肺不張的診斷價值。 方法 對2007年5月-2009年5月收治的67例肺不張患者的CT診斷與B型超聲診斷進行對照、分析、總結。 結果 B型超聲診斷一側肺不張和肺葉肺不張與CT診斷符合率為94.64%，肺段型肺不張診斷符合率為54.55%。 結論 B型超聲診斷可作為肺不張篩查的首選診斷方法。【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.