摘要
目的 探讨图像后处理参数在数字化X线摄影（digital radiography,DR）胸片用于尘肺病诊断中的作用.方法 随机选择83例某煤矿接尘工人,同时拍摄高仟伏X线胸片和DR胸片.在Philips Essenta DR机上对密度和对比度等图像后处理参数进行设置,研究合适的图像后处理参数.比较高仟伏X线胸片和DR胸片的质量.结果 通过调节图像后处理参数,DR胸片在上中肺野最高密度、膈下和直接曝光区的光密度分别为1.58±0.10、0.23±0.02和2.80±0.21,胸片质量符合尘肺病诊断标准的要求.83例DR胸片的优良片率（79例,95.18％）明显高于高仟伏X线胸片（67例,80.72％）,差异有统计学意义（P＜0.01）.结论 合适的图像后处理参数可以使DR胸片达到尘肺病诊断的胸片质量要求.
Objective To explore the effects of image post-processing parameters on DR chest radiograph for the diagnosis of pneumoconiosis.Methods Eighty three coal miners were examined with high-kV and DR chest radiographs at the same time.Image post-processing parameters（density,contrast and so on）were designed in a Philips Essenta DR machine were designed,then differences of image quality between high-kV and DR chest radiographs were compared.Results After regulating image and proceeding the parameters,the OD （optical density）values of high density areas in the upper-middle lung fields,subphrenic and direct exposure areas were 1.58±0.10,0.23±0.02 and 2.80±0.21,respectively.The quality of chest films met the requirements of diagnostic criteria of pneumoconiosis.The rate of excellent chest films for DR chest radiograph was 95.18%,which was significantly higher than that（80.72%）for high-kV chest radiograph（P〈0.01）.Conclusion Appropriate parameters of image post-processing can make DR chest radiograph to meet the requirements of chest radiograph quality for the diagnosis of pneumoconiosis.
出处
《中华劳动卫生职业病杂志》
CAS
CSCD
北大核心
2012年第1期3-7,共5页
Chinese Journal of Industrial Hygiene and Occupational Diseases
基金
浙江省重大科技专项（优先主题）社会发展项目（2008C13029-2）
浙江省医学支撑学科劳动卫生学（11-ZC02）
