Optimization of Image Quality and Organ Absorbed Dose for Pediatric Chest X-Ray Examination: In-House Developed Chest Phantom Study

Table 2

Criteria evaluation tool in the visual grading analysis for evaluation image.

#	Questions (criteria evaluation)
1	Reproduction of the whole rib cage above the diaphragm.
2	Visualization of the spine through the heart shadow.
3	Comparing the sharpness of the right and left diaphragm between the image and the reference image.
4	Comparing the contrast with the background for all the nodules between the image and the reference image.
5	Less noise means better image quality; knowing this, what do you think of the image quality of this image?
6	Comparing the differentiation between soft tissue, air, and bone on this image and the reference image.
#	Image evaluation (Score)	Clearly inferior to the reference (−2)	Slightly inferior to the reference (−1)	Equal to the reference (0)	Slightly superior to the reference (1)	Clearly superior to the reference (2)