直接数字射线照相合理应用探讨

直接数字射线照相DDR，有时被简称直接射线照相（Direct Radiography），或数字射线照相（Digital Radiography），是最近几年发展起来的新成像技术，它有别于采用IP成像板捕获射线影像的计算机射线照相CR，需要经过模数转换，而是采用一种由非晶形硅或硒阵列构成的平板探测器捕获影像，经电路输出数字化的光电信号，直接形成数字化影像，具有成像速度快、图像清晰、照射剂量少、操作简便等优点。本文阐述其安装和使用方面的实际经验和体会。

A Study on the Proper Use of Direct Digital Radiography(DDR)

Direct Digital Radiography （DDR）,also briefly called Direct Radiography or Digital Radiography is a new imaging technique developed during recent years. Being different from Computed Radiography which uses imaging plate for capturing the image,DDR captures the image through a digital fiat panel detector made with amorphous silicon or selenium lattices which output digital photoelectric signals through an electric circuit thus constituting directly digital radiographs. DDR performs exceptional advantages e.g. high imaging speed,sharp picture,low radiation dose,easy operation etc. This paper presents a summary of practical experience and understanding about its installation and use.