Across
- 2. The removal of an electron from an atom
- 6. Picture element; the smallest component of the matrix, which is represented as a single brightness level on a computer monitor
- 8. image, The visible radiographic image on the exposed detector after processing
- 10. Unwanted exposure on the radiographic image that does not provide any diagnostic information
- 11. receptor, A device that receives the radiation leaving the patient
- 13. X-ray photons that pass through the body to expose the image receptor
- 16. density, Matter per unit volume, or the compactness of the atomic particles composing the anatomic part
- 18. resolution, Used to describe the ability of the imaging system to distinguish between small objects that attenuate the x-ray beam similarly in digital imaging
- 19. radiation, The attenuated x-ray beam leaves the patient and is composed of both transmitted and scattered radiation
- 20. Reduction in the energy or number of photons in the primary x-ray beam after it interacts with anatomic tissue
- 21. electron, The electron ejected from an atom during a Compton scattering event
- 23. scattering, An interaction that occurs with low-energy x-rays, typically below the diagnostic range. The x-ray does not lose energy but changes direction
- 25. absorption, The difference between x-ray photons that are absorbed photoelectrically versus those that penetrate the body
- 26. image, The invisible image that exists on the image receptor before it has been processed
Down
- 1. effect, In the diagnostic range, the total absorption of the incident photon by ejecting an inner-shell electron of a tissue atom
- 3. The x-ray photons removed from the x-ray beam as a result of the uptake of their energy by body tissues
- 4. range, The range of exposure intensities that an image receptor can respond to and acquire image data
- 5. The use of a continuous beam of x-rays to create dynamic image of internal structures that can be viewed on a display monitor
- 7. The electron ejected from an atom during a photoelectric interaction
- 9. Incoming photons are not absorbed but instead lose energy during interactions with the atoms composing the tissue
- 12. Combination of rows and columns of pixels that make up a digital image
- 14. radiation, The attenuated x-ray beam leaving the patient that is composed of both transmitted and scattered radiation
- 15. scattering, An interaction in which an incident x-ray photon enters a tissue atom, interacts with an orbital electron and removes it from its shell
- 17. electron, The ejected electron resulting from the Compton effect interaction
- 22. effect, Scattering that results from the loss of some energy of the tissue of the incoming photon when it ejects an outer-shell electron from a tissue atom
- 24. bit depth, Affects the number of shades of gray available for image display