摘要
双能量X射线成像技术是用高、低两种能量的X射线对人体同一结构拍摄一对X射线片 ,由于人体组织对不同能量的X射线衰减系数不同 ,两片会有不同的光密度分布 ,对两片进行加权相减 ,可以分别给出被摄结构中的骨或软组织的单一成分的分布图像。本文介绍了双能量X射线成像原理和实现方法 。
Dual-energy X-ray Imaging is a technique that takes the double pictrues by high-energy and low-energy X-ray for the same parts of human body.The attenuation coefficient of human tissues depends on X-ray energy, so the gray of tow pictures is different.The image of skeleton(or soft tissue)canbe obfainel by weighted subtracting from the high-energy and low-energy X-ray radivgraph.This paper introduce the principles and performance for dual-energy X-ray imaging,discmser its prospect applied in medicine.
出处
《医疗设备信息》
2001年第10期27-30,共4页
Information of Medical Equipment
