Across
- 2. Any non- useful contribution to the image which interferes with the visibility of useful information
- 4. Geometric unsharpness around the edge of image
- 7. Degree of geometric sharpness in the image
- 9. sharp edge of shadow
- 11. The major controller of image resolution because it controls penumbra (blur)
- 12. high frequency= high resolution
Down
- 1. Motion: under the direct control of the patient
- 3. completely different than “restraints”, which are outside of the scope of a radiologic technologist
- 5. Creates false lines on the image of various shapes that not related to anatomy
- 6. low frequency= low resolution
- 8. Motion: vibrations from the reciprocating grid
- 10. ability of an imaging system to convert signals in the to alternating densities or pixel values