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






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






3. This is caused by mutations in gonadal cells - not seen until offspring are produced - mutations are not always bad






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






5. What is the term for an unknown cause






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






7. To double the density






8. This stage of pregnancy is the most dangerous for the fetus






9. What type of bone tumors started in the location they were first found






10. Radiographic signs dont always agree with what






11. They don't move - they're found in dental units and portable units - cannot withstand the heat produced from large units






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






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






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






15. Cassettes can be made of.....Which is the type here - or they can be made of magnesium - vinyl - etc






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






17. Has a positive charge






18. These screens have increased definition/detail - need to have increased radiation exposure






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






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






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






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






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






24. The greater the number of electrons released






25. What needs to have high levels of x-ray to light conversion with the correct energy and color for the type of film used






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






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






28. The layer of the film where the action occurs






29. Increase developing time and temp of developing fluid






30. Collimator






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






32. With the heel effect - more x-rays tend to be in the beam toward this end of the tube






33. Negative contrast agents appear what color on a radiograph






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






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






36. DJD is also called






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






38. This is used to take 'real-time' radiographs - used a lot in horses






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






40. If the kVp is too low






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






42. Longer wavelengths of electromagnetic radiation have more penetrating power






43. Incorrect grid focus is one reason for






44. MAs for chest 1/2x =?






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






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






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






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






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






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