牙齿口外计算机X线(CR)摄影技术的应用及分析  

Application of Teeth Outside Computer X-ray(CR) Photography and Research

作　　者：郭安民 张爱军 

机构地区：[1]甘肃省定西市通渭县人民医院,743300

出　　处：《现代医用影像学》2017年第2期276-278,共3页Modern Medical Imageology

摘　　要：目的:总结分析计算机X线(CR)摄影技术的应用及分析。方法:利用美国Kodak公司Direct View CR850计算机X线摄影扫描系统与现有国产500mA X线机匹配使用,对120例病人进行两次摄影,即先进行CR摄影,待图像处理及读出后,再进行普通口内牙片摄影,进行分析对比。结果:120例被检者牙齿口外CR摄影在成像时间、曝光角度、图像质量控制及存储、曝光宽容度等方面均优于普通牙片,得到不同的中心线投射角度及X线曝光参数。结论:牙齿口外CR摄影准确地了解牙齿情况,成像速度快,被检查后约数秒钟即可看到结果;照射剂量减少,约为普通牙片的60%~70%,减少被检者暴露在X线中的时间;CR系统与原有X线机匹配及成像板(IP)可重复使用,减少反复投资,费用降低。该技术是牙齿口外数字化发展的方向,适合中小型综合医院应用。objective：to analyze computer x-ray（CR） photography and research.Using United States Kodak Direct View CR850 the company computed radiography scanning system matching with current 500 mA x ray machine used on 120 patients for two photography,namely CR photography,image processing,and after reading,again for intraoral dental film photography,were analyzed.Results：of 120 cases being checked dental extraoral CR photography at imaging time,exposure point,image quality control and storage,exposure latitude is better than normal teeth,get a different centre line projection angle and x-ray exposure parameters.Conclusions：teeth outside the CR accurately comprehend the situation of photography and imaging speed,checked a few seconds after you can see the result; radiation dose reduction,approximately 60% ~ 70% of plain radiograph,reducing inspection time exposed x-ray; CR system matches the original x-ray machine and imaging plate（IP） can be reused,reducing repeated investment,lower costs.This technology is the development of dental extraoral digital direction,suitable for small and medium sized applications in General Hospital.

关 键 词：口外间接数字化摄影 计算机成像 曝光条件 中小型医院 

分 类 号：R78[医药卫生—口腔医学] R816.98[医药卫生—临床医学]