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. Radiograph of a dogs skeleton has a long scale of contrast






2. Types of cell damage






3. 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






4. Must be radiolucent






5. Radiographic signs dont always agree with what






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






7. The greater the number of electrons released






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






9. When doing a lateral radiograph of the thorax/chest - the x-ray beam should be centered over what specific anatomical landmark






10. Is the measurement for the maximum energy available at that setting






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






12. Screens are classified according to






13. This is inversely proportional to screen speed






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






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






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






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






18. If the kVp is too low






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






20. Improper centering of grid is one reason for






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






22. If you use an mA of 300 - What time fraction must i use to get an mAs of 10?






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






24. KVp=(2x thickness of body part in cm) + 40

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25. What type of film gives more detailed radiographs but more exposure to everyone involved? (commonly used as dental film - or for extremities)






26. AgBr + x-rays =






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






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






29. When more electrons hit the focal spot on the anode






30. Outer layer of disk ( dries out and cracks and causes disk to herniate)






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






32. Rotating anode






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






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






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






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






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






38. Calcium tungstate - rare earth elements






39. Between density and kVp






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






41. Safe Operating Procedures






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






43. These cells are the most sensitive to radiation






44. Another result of the 20 degree angling






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






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






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






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






49. Is influenced by quantity of x-rays(mAs) - quality of x-rays (kVp) - type and thickness of tissue being x-rayed






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