Standard Practice for Determining Contrast Sensitivity in Radioscopy
Standard Practice for Determining Contrast Sensitivity in Radioscopy
Аннотация
The contrast sensitivity gauge measures contrast sensitivity independent of the imaging system spatial resolution limitations. The thickness recess dimensions of the contrast sensitivity gauge are large with respect to the spatial resolution limitations of most imaging systems. Four levels of contrast sensitivity are measured: 4 %, 3 %, 2 %, and 1 %.
Ключевые слова
contrast sensitivity gauge; gamma ray; image formation; image processing; image quality indicator; line-pairs per millimeter; penetrating radiation; spatial resolution; X-ray; Contrast sensitivity; Gamma radiation; Image analysis; IQI (image quality indicators); Line-pairs per millimeter; Penetrating radiation; Radiation exposure; Radiological examination; Spatial resolution; Total image unsharpness; X-irradiation
