直接数字X射线胸片与普通高千伏X射线胸片对尘肺病诊断的比较分析
직접수자X사선흉편여보통고천복X사선흉편대진폐병진단적비교분석
Comparison of Direct Digital Radiography and High-kV X-ray of Chest Radiography in Pneumoconiosis