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. When a body part is greater than or equal to.....you should use a grid






2. When the density difference is great - there is






3. There are......intensifying screens within a cassette






4. 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)






5. Extra vertebrae - scoliosis - fused vertebrae are all examples of






6. A grid must be used on the chest if it's 11cm thick






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






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






9. Screens are classified according to






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






11. Between density and mAs






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






13. What type of cystogram uses air and hypaque






14. The effective focal spot is approximately 1/3 the size of the actual focal spot






15. Affects both density and contrast






16. An invisible image on the x-ray film Which becomes visible after it has been processed in the manual or automatic processor






17. Has a positive charge






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






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






20. The distance from the x-ray tube to the x-ray machine is the SID (source image distance) - or the FFD (also known as....)






21. Crystals + x-rays = ?






22. The 2 types of collimators are






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






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






25. What is the term for when the animal's bowel engulfs a piece of bowel distal to it - causing blockage






26. If the grid is stationary - more lines that are finer are less apt to show up on a radiograph - this is called....






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






28. MAs for bone views (pelvis - skull - spine) 2x =?






29. MAs for ANY part - when using a grid 3x= ?






30. Increased crystal size.....






31. Positive contrast agents appear what color on a radiograph






32. The exact area of the anode that the electrons hit






33. 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






34. The efficiency of this reflects light made by phosphors back towards the film






35. Animal has broken femur - it's ideal to have How many radiographs for diagnostic purposes






36. Hairloss or baldness






37. If barium leaks into the abdomen or lungs - it can cause what






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






39. What specific part of the eye is cloudy with a cataract






40. If there's far or muscle in the way of an x-ray - those parts would be






41. Increased thickness of this leads to increased x-ray absorption and increased visible light emission from the crystals






42. Weakness






43. These crystals will turn white/clear when processing film






44. Measures the power of penetrability (quality) of the x-rays produced






45. When processing film - the black areas are made of






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






47. Is the source of electrons






48. Can cause damage to living cells through the process of excitation or ionization of electrons in the orbits around atoms






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






50. We ideally take a radiograph of the abdomen at the peak of inspiration