婴儿床边摄影图像伪影排除与研究

Study and elimination of artifacts on infant bed-side chest radiograph

目的:通过分析少见的婴儿床边胸部图像,掌握其伪影形成的原因及排除方法,以防止因此图像伪影的产生而造成诊断的错误。方法:随机抽取6～7张有形状固定且位置不固定的伪影的婴儿床边胸片。检查摄影时数字平板和X射线管窗口及束光器有无固定异物,对数字平板进行校正,拆开束光器清洁束光器内部四周灰尘及尘渣。结果:故障排除,图像伪影消失。结论:由于婴儿胸部摄影曝光条件弱,加之DR图像低对比分辨率高,故在婴儿胸片上容易产生图像伪影。

Objective：To analyze and understand the artifacts on infant bed-side chest radiograph,and to prevent their occurring to reduce diagnostic errors.Methods：Infant bedside chest radiograph were obtained randomly for quality control.Artifacts with regular shape but different location were found on the above images.Measures to eliminate the artifacts were taken as the followings：Firstly,digital panel,X-ray tube window and collimator were observed to eliminate fixed foreign body;secondly,the digital panel was collimated,and finally,collimator must be dismantled and cleaned up.Results：The machine problem was solved and the image artifacts disappeared after the above measures were taken.Conclusions：It is easy to produce image artifacts on infant bed-side chest radiograph due to low exposure conditions for infant chest and high low-contrast resolution.