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在常规投照后前位 X 线胸片上,一般都能显示病灶阴影,据此确诊肺部疾患。我们于1986～1989年间,采用前凸位 X 线投照体位,发现了18例在常规后前位投照的 X 线胸片上未发现的病灶阴影。如一因症就诊病人,拍后前位胸片无异常发现,痰浓缩查见抗酸杆菌,继拍前凸位 X 胸片,于右侧第三后肋间近纵隔处,显示一约黄豆粒大小的增殖性病灶,周围有渗出性改变。另一例因干咳两周就诊,后前位胸片显示右锁骨上区较左侧透明度为低,但无明显病灶可见,行前凸位体位投照,于右肺尖部发现边缘不清之絮状阴影。
In the conventional projection after the first X-ray, the general can show the shadow of the lesion, thus diagnosing lung disease. From 1986 to 1989, we used the X-ray projection of the anterior protrusion to find the undetected lesion shadow on the X-ray chest of 18 cases who were placed in the routine posterior position. As a result of illness patients, no abnormalities were found in the anterior chest radiograph, sputum concentration check acid-fast bacilli, following the anteroposterior X-ray film, in the right third of the intercostal space near the mediastinum, showing a treaty about soybeans The size of the proliferative lesions around the exudate changes. Another case of dry cough two weeks of treatment, after the anterior chest radiograph showed the left clavicle on the left side of the transparency is low, but no obvious lesions can be seen in the line before the projection position projection, found in the right tip of the edge of the unclear floc Shaded.