摘要
目的:探讨DDR影像质量控制的方法。材料和方法:按顺序抽取我院实行质量控制前、后的DDR照片各400份,依据照片甲片率的判定标准分别统计出甲、乙、丙片率及废片率,并分析非甲级片影响因素。对机器性能、曝光参数、技术员素质、后处理技术四个环节实行质量控制,采用相应有效质控措施。结果:质控组甲片率66%、乙片率29%、丙片率5%。非质控组甲片率41%、乙片率35%、丙片率23%。结论:实施质量控制能显著地提高DDR的影像质量。
Purpose： To investigate the image quality control methods of direct digital radiography. Materials and Methods： Consecutively, 400 films selected before and after the image quality control were reviewed and compared. According to the gradation system, the image quality were graded as A, B, C and D （junk film）. The control factors included equipment status, exposing parameters, technician level and post process. The causes of the non-A grade were analyzed. Results： The image quality grade A, B, C was 41% , 35% and 23% , respectively before QC, was 66%, 29% and 5%, respectively after QC. Conclusion： Image quality of DDR can be significantly improved by quality control.
出处
《中国医学影像学杂志》
CSCD
2006年第2期141-143,共3页
Chinese Journal of Medical Imaging
关键词
直接数字化摄影
质量控制
direct digital radiography
quality control
