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






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






3. Weakness






4. If the kVp is too high






5. What is one of the most common area of occurance for spinal problems (15% dobermans)






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






7. What must have little or no 'afterglow'






8. These cells are the most sensitive to radiation






9. Sheets of luminescent phorphor crystals on a cardboard or plastic base






10. Lead equivalent for thyroid sheild






11. This is inversely proportional to screen speed






12. When.....collide with the anode - 99% of energy is released in the form of heat - and 1% of energy is in the form of x-rays






13. Radiographic signs dont always agree with what






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






15. The back of the cassette is made of lead to decrease....






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






17. The x-ray machine we've been using has a rotating anode






18. Must change if the FFD changes






19. AgBr + light =






20. Is on the anode and is angled at approximately 20 degrees from vertical






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






22. Negative contrast agents appear what color on a radiograph






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






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






25. What type of cystogram uses air and hypaque






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






27. Is the density difference between 2 adjacent areas on a radiograph






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






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






30. Is to the right - it produces the electrons






31. Does move - has disks that rotate at high speeds - this helps spread out the heat that's produced as the electrons hit the focal spot






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






33. What type of bone tumors started elsewhere and spread to the location it was found






34. Calcium 'bridges' between adjacent vertebrae






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






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






37. What type of film has the x-rays directly cause the latent image to be formed






38. Incorrect grid focus is one reason for






39. Within the collimator outlines just how much is collimated






40. Another result of the 20 degree angling






41. Distance from the grid to the x-ray tube (36-40 inches)






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






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






44. Bone - lymphatic cells - epitheilial - and hemopoietic cells are also what kind of cell?






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






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






47. Film with silver crystals that is more sensitive to fluorescent light emitted from intensifying screens than to ionizing radiation






48. Must be radiolucent






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






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