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. The smaller the focal spot






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






3. These screens are the most common type - they give good resolution with relatively low exposure






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






5. 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






6. Screen speed is.....to the exposure required to cause it to flouresce






7. When the density difference is great - there is






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






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






10. Another result of the 20 degree angling






11. Must change if the FFD changes






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






13. As this increases - the intensity of the x-ray beam decreases - so the beam intensity increases - and the mAs must decrease to compensate






14. Incorrect grid focus is one reason for






15. Screens are classified according to






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






17. Between density and mAs






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






19. Loss of movement in legs (front and/or back)






20. Film with: ultra speed - grainier image - less exposure needed






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






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






23. If there's no object in the way of an x-ray - the picture would be






24. Hairloss or baldness






25. Faster screens/less detail; slower screens/more detail






26. Types of grids






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






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






29. Lead equivalent for thyroid sheild






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






31. What type of films need a lot more x-ray exposure and more time to expose them






32. This number in santes' rule refers to the distance the x-ray tube is from the x-ray film






33. Redness of the skin






34. Has a filament made of tungsten - due to the high melting point






35. Calcium 'bridges' between adjacent vertebrae






36. If the kVp is too high






37. AgBr + light =






38. What type of cystogram uses air and hypaque






39. Is determined by the ratio of the height of the lead strips to the distance between them






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






41. Body cells affected - damage seen during lifetime of creature - can be immediate or cummulative






42. Monitors personal exposure to radiation






43. Amount of radiation a person can recieve in a calendar year






44. The layer of the film where the action occurs






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






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






47. General purpose film - forgiving






48. Slowly growing dividing cells are the most sensitive to the effects of ionizing radiaton






49. We should always try and stay How many feet from our x-ray machine






50. AgBr + x-rays =