Digital Radiography Key Terms

2. Process of applying algorithms to the raw data to align the histogram with the LUT
4. Receives remnant radiation in DR imaging
7. A cell within a matrix
10. Electronic components that store the detected energy in DR imaging
17. Area of the image receptor where the raw data are collected from
18. Degree of lightness or lack of lightness of the pixels in the image
19. Assigning each pixel a digital number that represents the amount of light emitted from the surface of IP
21. The layout of pixels in rows and columns
22. Ability of an imaging system to distinguish small adjacent details from each other in the image
24. Occurs when IP is not adequately erased before the next image is exposed on it
25. Blackening of the areas outside the exposure field after exposure manipulation

1. Postprocessing manipulation of the image’s brightness and contrast
3. Ability of an imaging system to resolve low-contrast objects on an image
5. Process distinguishing raw data coming from within the exposure field from that outside the exposure field
6. Process of collecting x-ray transmission measurements from the patient
8. Anatomic structures of interest
9. Readings that express the amount of light given off by the IP
11. Set of rules applied to the raw data to align the image histogram with the LUT
12. Used to monitor the radiation output and dose to the patient per volume of tissue irradiated
13. Process of converting an analog image to binary data
14. The “ideal” reference histogram for the imaged part
15. Grid artifact that causes a wavy line pattern on image
16. Range of gray shades that the imaging system can display
20. Data representing the brightness values from the image receptor before rescaling
22. Refers to how frequently in a set amount of space the number of details changes
23. Stores trapped electrons prior to being processed