CR成像技术在放射治疗中的运用  

The Usage of CR Imaging Technique in Radiotherapy

作　　者：甘美珠[1] 李永斌[1] 肖冰[1] 李晓林[1] GAN Mei-zhu,Ll Yong-bing,XIAO Bing,Ll Xiao-lin （Department of radiotherapy , Zhangzhou Hospital of Fujian Provinee,Zhangzhou 363000,China）

机构地区：[1]福建省漳州市医院放疗中心,福建漳州363000

出　　处：《医学信息》2011年第21期488-488,共1页Journal of Medical Information

摘　　要：目的探讨如何使X线数字洗片机与电子直线加速器相适应，达到拍摄高清晰度的射野验证片的目的。方法在IP板上增加金属铜片。结果通过添加金属铜片的方法．我们得到了符合诊断要求的CIK影像。结论X线数字洗片机采用的是与普通X线拍片机相似的kV级能量，而普通加速器输出能量高（x线能量档为6MV），其穿透力强，照相的组织对比度和分辨率较差。正是照相与成像机器二者之间的能量差导致了图像清晰度的下降，骨与软组织分辨率低，不利于照射位置准确性的判断。因此，通过添加金属铜片，我们达到了降低照相与成像机器二者能量差的目的，得到了高清晰度，符合诊断要求的CIK影像。Objective To discuss how to match X-ray digital film processor with medical electron linear accelerator in order to acquire high-definition portal verification images. Method A piece of copper plate. Add a piece of copper plate on the IP plate. Result By adding copper plate on the IP plate, we could easily get CR images which meet our diagnostic demands. Conclusion X-ray digital film processor adopts kV energy stage as common X-ray shooting machine does. Common accelerator outputs high energy （6MV X-ray energy gear）, its high radiation penetrating power usually demonstrates low-contrast and poor-definition images. It is energy differences between film shooting machine and film-forming machine that lead to lower image definition and poorer resolution between hones and soft tissues. As a result, by adding conner plate, the cooper plate helps to match X-ray di~,ital film processor with medical electron linear accelerator.

关 键 词：CR机 铜片 图像清晰度 

分 类 号：R445[医药卫生—影像医学与核医学;医药卫生—诊断学;医药卫生—临床医学]