正常和病变肺段及肺段以上各级支气管的CT分析

An Analytical Study of CT on Normal and Abnormal Segmental Bronchi and All Grades of Higher Bronchi

目的 提高常规 Ｃ Ｔ 扫描对正常肺段及肺段以上各级支气管的认识，进一步识别异常支气管。方法 通过对 ８６ 例正常人胸部和 ４５ 例肺部疾病常规 Ｃ Ｔ 扫描观察分析正常和异常肺段及肺段以上各级支气管的改变。结果 正常肺段以上各级支气管的显示率为 ８１％ ～１００％ ，段支气管显示率 ３４％ ～９１％ Ｃ Ｔ 扫描显示支气管异常的敏感性为 ９６％ ，特异性为 ９９．７％ ，准确性为 ９９．４％ 。结论 Ｃ Ｔ 扫描对正常肺段及肺段以上各级支气管的认识及对异常支气管的 Ｃ Ｔ

Objective To get a better knowledge of CT scans on normal segmental and higher bronchi,and further distinguish these from the abnormal bronchi.Methods To observe and analyse the changes of the normal and abnormal segmental and higher bronchi on CT scans in 86 normal individuals and 45 patients.Results The demonstrative rate of normal segmental and higher bronchi was 34%~91% (average 73%) and 81%~100% (average 96%) respectively on CT scans.In demonstration of bronchial abnormalities,its sensitivity,specificity and accuracy were 96%,99.7% and 99.4% for CT scans respectively.Conclusion CT is very valuable in the recongnition of normal segmental and higher bronchi,and in the diagnosis of abnormal bronchi.