image quality indicator

Image quality indicator sensitivity.

像质指示器灵敏度.

It was suggested that Al Image Quality Indicator ( IQI) would be used to evaluate the quality of X-ray radiographs of C/ SiC.

提出采用Al像质计对C／SiC复合材料的X射线照相检测质量进行评估。

The X-ray attenuation property of solid rocket motor chamber material was described and the testing method for X-ray attenuation coefficient was given. The type, material and location of image quality indicator ( IQI) for radiographic examination of solid rocket motor chamber were proposed.

阐明固体火箭发动机燃烧室材料的X射线吸收特性，给出材料线吸收系数的切向与径向测试方法，提出固体火箭发动机燃烧室X射线探伤像质计类型、材料和放置的建议。

The experimental research for weld-plate between methods of convention and equivalent energetic-spectrum is made. The result indicates that the visible effect of image is improved and the contrast sensitivity increases 20~ 40 gray level on image quality indicator ( IQI);

与常规校正法对焊接板进行实验对比研究结果表明，等效能谱法增强了成像的可视化效果，通过像质计灵敏度实验，其对比度灵敏度提高了20~40灰度级；