Image Production - Chapter 8 Key Terms

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Across
  1. 5. Arrangement of pixels forming a digital image
  2. 6. Real-time imaging using continuous or pulsed x-rays
  3. 11. effect Complete absorption of an x-ray photon with ejection of an inner-shell electron
  4. 13. radiation X-rays that leave the patient and reach the image receptor
  5. 16. density Compactness of tissue affecting x-ray absorption
  6. 18. Electron ejected during a photoelectric interaction
  7. 19. Unwanted exposure that reduces image contrast
  8. 20. radiation Radiation remaining after passing through the patient
  9. 24. Removal of electrons from atoms, forming ions
Down
  1. 1. electron Outer-shell electron ejected during a Compton interaction
  2. 2. image Invisible image stored before processing
  3. 3. absorption Different tissues absorb x-rays at different rates
  4. 4. range Range of exposures a digital system can accurately record
  5. 7. scattering Low-energy interaction where the photon changes direction without energy loss
  6. 8. effect X-ray photon ejects an outer-shell electron and is scattered with reduced energy
  7. 9. Deflection of x-ray photons after interaction
  8. 10. X-ray energy is completely taken up by matter
  9. 12. resolution Ability to display differences in shades of gray
  10. 14. electron Electron produced by x-ray interactions in matter
  11. 15. Overall reduction in x-ray beam intensity as it passes through tissue
  12. 17. image Visible image after processing
  13. 21. X-rays passing through tissue without interaction
  14. 22. Smallest unit of a digital image
  15. 23. bit depth Number of gray shades a pixel can display
  16. 24. receptor Device that captures x-rays to form an image