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目前矽肺诊断仍以X线胸片为主要依据、由于矽肺早期病理改变较为细微,因此对X线胸片质量,特别是清晰度要求较高,以利矽肺早期诊断,但通过我局两万多人矽肺拍片的实践,我们体会到,虽经多方努力,使拍片质量有所改进,然而胸片的清晰度始终未明显提高,使矽肺的早期诊断存在很大困难。因此我们认为解决拍片清晰度问题,是当前提高拍片质量搞好矽肺普查的关键环节。影响清晰度的因素很多,诸如焦点大小、焦片距、物片距、物动度、增感屏、散射线以及投照冲洗等因素,在上述因素中,除焦点大小是X线机固有条件外,其余均可经过努力达到要求条件。目前我国基层医院普遍使用的是国产200毫安固定阳极X线机,
The current diagnosis of silicosis is still the main basis for X-ray, due to the early pathological changes of silicosis is more subtle, so the quality of X-ray, especially the higher clarity to facilitate the early diagnosis of silicosis, but my bureau more than 20,000 The practice of human silicosis film, we realize that, despite the many efforts to make the film quality has improved, however, the clarity of the chest has not significantly improved, so that the early diagnosis of silicosis is very difficult. Therefore, we think that the solution to the problem of the definition of the film is the key to improve the quality of the film and improve the current silicographic survey. Factors affecting the clarity of many factors, such as the focus size, focal length, the distance between the object, the physical activity, the sensitometric screen, scattering lines, as well as projection flushing and other factors, in addition to the focus size is X-ray machine inherent conditions Outside, the rest can be hard to meet the requirements. At present, grassroots hospitals in China are commonly used is made of 200 mA fixed anode X-ray machine,