RAD 231 Fluoroscopy and Digital Fluoroscopy

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Across
  1. 4. where the electron beam crosses over the anode of the image intensifier tube
  2. 5. digital fluoroscopy uses _____ tube currents than conventional
  3. 11. reduction in brightness at the periphery of the image
  4. 12. main advantage of image intensified fluoroscopy
  5. 14. cell of a digital image matrix
  6. 15. the weakest link in image intensified fluoroscopy
  7. 17. site where accelerated electrons interact and produce light in the image intensifier tube
  8. 18. X-ray tube is operated at less than _____ mA for fluoroscopy
  9. 19. layer of the TV camera tube that conducts video signal out of the tube
  10. 23. photoemission occurs at this part of the image intensifier tube
  11. 24. time it takes the X-ray tube to be switched on and reach selected levels of kVp and mA
  12. 26. the ratio of the square of the input phosphor diameter to the square of the output phosphor diameter
Down
  1. 1. determined by the number of scan lines
  2. 2. the simplest method of connecting the image intensifier tube with the TV camera tube
  3. 3. _____ TV fields help prevent flickering
  4. 6. describes chemicals ability to give off light only during stimulation by x-rays
  5. 7. ratio of light photons at the output phosphor to the number of x-rays at the input phosphor
  6. 8. fluoroscopy procedures provide _______ images
  7. 9. part of image intensifier tube that converts x-ray energy to visible light
  8. 10. X-ray tubes for fluoroscopy equipment is ______ the table
  9. 13. _____ vision is preferred over rod vision
  10. 16. picture tube
  11. 20. the emission of electrons that follows light stimulation
  12. 21. pattern produced by movement of electron beam on the screen of the
  13. 22. product of minification gain and flux gain
  14. 25. CCD replaced the ______ in digital fluoroscopy