| 姜金凯,曹桂景.CR摄影与屏-片摄影的比较[J].中华放射医学与防护杂志,2007,27(1):97-98 |
| CR摄影与屏-片摄影的比较 |
| The comparative analysis of computed radiography(CR) and screen-film radiography exposure condition |
| 投稿时间：2006-01-08 |
| DOI： |
| 中文关键词: 计算机X线摄影 曝光量 质量控制 成像板 |
| 英文关键词:Computed radiography Radiantion exposure Quality control Imaging plate |
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| 中文摘要: |
| 目的 探讨CR摄影与屏-片系统摄影曝光条件及对患者的X射线辐射剂量,评价CR摄影的应用价值。方法 取本院CR照片和常规X射线摄影照片各2500份,由2位主管技师和1位副主任技师对照片按部位分组进行分析,统计出甲、乙、丙及废片率;并对乙、丙及废片产生的原因进行分析。结果 1照片质量:CR摄影照片甲级片率63.6%,乙级片率27.2%,丙级片率9.2%,废片率0%;屏-片系统摄影照片甲级片率40.2%,乙级片率42.4%,丙级片率15.6%,废片率 1.8%。2摄影条件的比较:CR数字摄影比屏-片系统摄影电压需提高1～6 kV,曝光量高20%左右。结论 CR数字摄影照片质量明显高于屏-片系统摄影,但曝光条件比屏-片系统高,相对增加了患者的X射线辐射剂量。 |
| 英文摘要: |
| Objective To explore the exposure condition of CR and screen-film radiography and the radiation dose to patients,and to evaluate image quality of the CR system. Methods Two thousand and five hundred sheets of CR and screen-film radiography images were selected and then analyzed by two junior radiologists and one senior radiologist. Results 1The quality of the images was classified into grades A,B,C: grade A in 63.6%, grade B in 27.2%, grade C in 9.2%,waste in 0% for CR while grade A in 40.2%, grade B in 42.4%, grade C in 15.6%,waste in 1.8% for screen-film radiography.2The required voltage of CR system was 1-6 kV higher and radiantion exposure was increased by about 20% than the screen-film radiography system. Conclusions The imaging quality of CR was obviously higher than that of the screen-film radiography, providing reliable diagnosis evidence for clinical practice. but the disadvantage of CR system was the higher exposure condition required,which increase the patient dose. |
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