Table 1.

Scoring method for the subjective assessment.

	Metrics	Scoring
1	Contrast between the trabecular bone and bone marrow	1. Too high or too low and unacceptable; 2. High or low but acceptable; 3. Optimal
2	Existence of noise	1. Severe and unacceptable; 2. Marked but acceptable; 3. Moderate; 4. Mild; 5. None or minimal
3	Sharpness of the trabecular bone	1. Severe blurring of the images and unacceptable; 2. Marked blurring of the images but acceptable; 3. Moderate blurring of the images; 4. Mild blurring of the images; 5. None or minimal blurring of the images
4	Obvious overlapping shadows	1. Severe and unacceptable; 2. Marked but acceptable; 3. Moderate; 4. Mild; 5. None or minimal
5	Natural shape of the trabecular bone texture	1. Poor and unacceptable; 2. Marked irregular and unnatural but acceptable; 3. Slightly irregular and unnatural; 4. almost defined and natural; 5. Completely defined and natural