...
首页> 外文期刊>Medical and Biological Engineering and Computing: Journal of the International Federation for Medical and Biological Engineering >A method for determining the information capacity of x-ray imaging scintillator detectors by means of luminescence and modulation transfer function measurements.
【24h】

A method for determining the information capacity of x-ray imaging scintillator detectors by means of luminescence and modulation transfer function measurements.

机译:一种用于通过发光和调制传递函数测量来确定X射线成像闪烁体探测器的信息容量的方法。

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

A method to determine the information capacity of x-ray phosphor screens used in the detectors of medical imaging systems is described. Information capacity was determined via x-ray luminescence efficiency (XLE), modulation transfer function (MTF) and emission spectrum measurements. The method was applied to laboratory prepared screens from commonly employed phosphor materials. The screen coating weight varied from 50 mg cm-2 to 140 mg cm-2. Results indicated that information capacity decreased with screen coating thickness but also depended on intrinsic phosphor properties (density, effective atomic number, intrinsic conversion efficiency, light wavelength). The Gd2O2S:Tb phosphor, exhibiting high density and effective atomic number, was found to be superior to La2O2S:Tb and Y2O2S:Tb.
机译:描述了一种用于确定在医学成像系统的检测器中使用的X射线荧光屏的信息容量的方法。信息容量是通过X射线发光效率(XLE),调制传递函数(MTF)和发射光谱测量确定的。将该方法应用于由常用荧光粉材料制成的实验室屏幕。筛网涂层重量在50mg cm-2至140mgcm-2之间变化。结果表明,信息容量随屏幕涂层厚度的增加而降低,但也取决于荧光粉的固有特性(密度,有效原子序数,固有转换效率,光波长)。发现具有高密度和有效原子序数的Gd2O2S:Tb荧光粉优于La2O2S:Tb和Y2O2S:Tb。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号