VT Radiology ch 1 - 9

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Across
  1. 2. Penetrating, ionizing, electromagnetic radiation that has a wavelength much shorter than visible light
  2. 5. The distance between two successive crests or troughs
  3. 6. A positively charged electrode within the x-ray tube composed of copper, tungsten and graphite
  4. 9. Lack of sharpness resulting from patient motion
  5. 10. Light box for viewing radiographs
  6. 12. Electromagnetic radiation that has neither mass nor electric charge but interacts with matter as though it were a particle
  7. 13. The ability of the imaging system to distinguish between two adjacent structures and can be expressed in the unit line pairs per millimeter
  8. 16. a coiled tungsten wire within the x-ray tube that is the source of electrons during x-ray production
  9. 18. Causes the target to rotate rapidly during x-ray production
  10. 20. The emission of light from the screen when stimulated by radiation
  11. 21. Degree of difference between the light and dark areas of a radiograph
Down
  1. 1. A minute portion of matter distinct from x-rays alpha particles, electrons, neutrons, protons
  2. 3. A region of diffuse shadow
  3. 4. A material such as concrete or lead which absorbs or prevents radiation
  4. 7. A device that is used to measure x-ray exposure
  5. 8. The potential difference applied to the x-ray tube that determines the speed at which the electrons in the tube current move
  6. 11. A device for limiting particle of radiation to a particular path, used to restrict the beam of radiation to a specific area
  7. 14. The x-ray tube current during an exposure
  8. 15. A negatively charged electrode within the x-ray tube. It is comprised of a filament and a focusing cup
  9. 17. Accidental or unintentional image on a radiographic image
  10. 19. A container for intensifying screen and film