Test your basic knowledge |

Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Is the electrical current that heats the filament






2. The mAs has to do with the power of the x-rays produced






3. Old mAs x (new FFD)2 divided by (old FFD)2






4. What gives off 4 times the amount of light photons than does the calcium tungstate (it gives off green light)






5. Redness of the skin






6. Aluminum filter






7. X-ray gloves have to have....of lead equivalent






8. When this is exposed to x-rays - it will absorb photons (quanta) and give off photons of visible light which the film is sensitive to (give off blue light)






9. Size film we use here






10. Is to the left - electrons bounce off it at a 20 degree angle






11. Why do we not give atropine with a contrast radiograph






12. Most commonly used film - compromise between graininess and speed (detail)






13. A layer of intensifying screen that reflects the light from the phosphor layer toward the film






14. A device that moves the grid back and forth under the table. it helps to prevent grid lines from showing






15. What is one of the most common areas of occurance for spinal problems ( 85% dachshunds)






16. Is the device which restricts (narrows) the beam of x-rays as they leave the x-ray machine






17. What is the term for a negative contrast cystogram where we inject air






18. To double the density






19. A...is a series of lead strips on edge which only allow the primary x-rays - which are traveling in straight lines - reach the film






20. X-ray machines come with a set one - we cannot adjust it






21. Less forgiving - high contrast - cannot tolerate changes in exposure or processing






22. Is only 1/3 the size of the actual focal spot






23. Are produced when electrons are slowed down or stopped by atoms in the target area where they are aimed






24. Pigments tend to decrease the lateral spread of light so there is increased detail






25. Refers to the 'blackness' of a radiograph






26. The picture formed after the film has been exposed to x-rays and then processed into a visible image.






27. Must increase.....to compensate for x-ray absorption by the grid. (we triple our mAs)






28. With this procedure - no x-ray film is involved at all






29. AgBr + x-rays =






30. Is located in a focusing cup made of molybdenum which has a high melting point and helps to direct the electrons produced toward the cathode






31. AgBr + light =






32. Is responsible for the number or quantity of x-rays






33. Growth - gonadal - neoplastic - and metabolically active cells are what kind of cells






34. With the heel effect - more x-rays tend to be produced toward the cathode end






35. A type of electromagnetic radiation which have a shorter wavelength than visible light






36. With what kind of typical film do we get 95% exposure due to visible light and 5% is due to the x-rays directly






37. What type of film has no screens or film cassettes






38. If the thorax is greater than or equal to....you should use a grid






39. Increase what value to penetrate thick body parts






40. The focused grid is upside down - is one reason for






41. If the kVp is too low






42. This is inversely proportional to screen speed






43. Compound of silver and bromine - chlorine - or iodine - all of which are in the halogen group of elements






44. If there's bone in the way of an x-ray -. those parts would be






45. If the kVp is too high






46. Grid helps reduce the amount of......






47. Areas on film that should be black but come out grey - due to storage






48. Gelatinous center of disk - pinches spinal cord to cause herniated disk






49. Lead equivalent for thyroid sheild






50. The effective focal spot is only 1/3 the size of the actual focal spot. this is called the