抽象的
通过呼气的胸部射线照相促进小型顶端气胸部的示范。本研究旨在分析小型气球患者呼气胸部射线照片的假设增强。用密度计(X-Rite 3001)获得光学密度(OD),在54个成对的吸气和呼气的胸部射线照片上为22例连续的小型肺泡22例。测量ODS:在第一和第二胸椎之间的椎间空间(区域1)之间;在受影响的肺部牙科(2)的外周部分;在邻近的腹腔内空间(区域3)。在配对的吸气和呼气胸部射线照片之间获得了每个区域的OD的优异相关性。呼气胸部射线照片上的所有区域的消耗症明显高于吸气胸部射线照片。肺检询和呼气膜中的胸膜牙科和腹膜空气之间的对比并没有显着差异。呼气胸X型射线照片通过增强肺部实质和骨内空气之间的对比度,不会提高小型气球的可见性。 Expiratory chest radiographs show equally increased OD in the area of lung tissue and intrapleural air, caused by increased extrapulmonary tissue density during expiration, resulting in increased radiation exposure monitored by the ionization chambers of standard radiological equipment. If expiratory chest radiographs are really improving the visibility of apical pneumothoraces, there must be other reasons than contrast enhancement to explain this.