肺下缘X线影像动态观察及其意义

Radiologic - anatomic observation of the inferior lung margin in vivo and its significance

目的:研究肺下缘的Ｘ线影像解剖学表现。方法:临床钡餐检查者中,随机选５４０例(有心肺疾患者除外),对其膈区的动态透视、摄片和电视录像资料进行观察分析,观测肺下缘的位置、形态、动度等。结果:肺下缘显示在双膈区呈一条下突的弧形线,称肺下缘线,是含气的肺下缘组织与周围结构的密度不同而显示的一条分界线。该线随呼吸活动,左右同步,平静呼吸时在肩胛肿线处平１１肋,双侧等高。活体肺下缘的位置比解剖学肺下缘的投影要低得多,两者相差约一个肋间。结论:肺下缘线是肺下缘的Ｘ线影像标志,观测肺下缘的影像对膈区疾病的诊断有重要意义。

Objective: To study the radiological anatomy of the inferior lung margin in vivo. Methods; The materials of the dynamic roentgenoscopy, X - ray film and videotape on diaphragms region were analyzed on 540 cases selected from barium examination. The location, shape and motion of inferior lung margin were observed. Result: The inferior lung margin shown as a camber line in the diaphragma region was called inferior lung margin line. It was a density contrast line between air- filled inferior lung margin and surrounding tissues. The right and left lines moved with breathing synchronously. At the state of eupnea, the line was in the level of 1th rib at the scapular line. The height of right and left sides were equal. The inferior lung margin in the living is about one rib space lower than that in the cadaveric specimens. Conclusions: The inferior lung margin line is an image sign of the inferior lung margin. It has important clinical significance to the disease diagnosis in the diaphragma region