×

射线数字成像检测技术

消耗积分:3 | 格式:rar | 大小:331 | 2010-03-20

分享资料个

射线数字成像检测技术

介绍多种射线数字成像(DR)系统的组成及成像机理,分析其性能指标、优缺点及应用领域。光子放大的DR 系统(如图像增强器DR 系统)实时性好,但适应的射线能量低,检测灵敏度相对较低;其它系统的检测灵敏度较高但成像时间较长。DR 系统成像方式的主要区别在于射线探测器,除射线转换方式外,影响系统检测灵敏度的主要因素是散射噪声和量子噪声;可采用加准直器和光量子积分降噪的方法提高检测灵敏度。

The structure and imaging principle of digital radiographic (DR) systems are introduced. And thecharacteristics, performances, advantages, disadvantages and applications of the
systems are analyzed. The DR sys-tern with photon amplification such as the DR system with
intensifier can get real-time imaging, but it fits for lowerenergy and its inspection sensitivity is lower.The systems working with high energy can obtain higher sensitivity,while is time-eonsurning. The imaging way of a DR system depends on the detector used, and the factors influencinginspection sensitivity are the quantum noise from ray source and scatter noise besides the transform way of rays.Quantum integration noise reducer and collimator can be used to improve the inspection sensitivity of the system.

声明:本文内容及配图由入驻作者撰写或者入驻合作网站授权转载。文章观点仅代表作者本人,不代表电子发烧友网立场。文章及其配图仅供工程师学习之用,如有内容侵权或者其他违规问题,请联系本站处理。 举报投诉

评论(0)
发评论

下载排行榜

全部0条评论

快来发表一下你的评论吧 !