X光机数字化的研究进展

数字化X光机相对于传统屏片式X光机具有的高灵敏度,低噪声,数字化图片等优点。详细介绍两种X光机数字化方法:计算机X射线摄影(CR)和数字X射线摄影系统(DR)的组成部分、工作原理和最新进展。最后给出了各种X光机量子探测率和MTF随空间分辨力变化曲线,说明基于直接型平板探测器的DR系统具有更优越的性能,是数字化X光机的最终发展方向。

Present and development of digital X-ray imaging technology

Compared with traditional film-screen system,digital X-ray imaging technology offers a number of clinical advantages such as higher sensitivity,lower intrinsic noise and availability of the images in electronic format.Principle and present of the two major digital X-ray imaging system: computed radiography(CR) and digital radiography(DR) are introduced in detail.Furthermore,the DQE and MTF curve for the different types of digital X-ray imaging shows that direct digital radiography owns the best characteristics and would be the final production of digital X-ray imaging technology.