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






2. White against black - like the x-ray of a plain skeleton






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






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






5. What type of cystogram uses air and hypaque






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






7. The 2 types of collimators are






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






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






10. Film with: high detail - minimal graininess - increased exposure






11. Gelatinous center of disk - pinches spinal cord to cause herniated disk






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






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






14. What is the name for the cartilage flap in the shoulder joint that has broken free and is floating around in the joint fluid






15. Radiographic signs dont always agree with what






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






17. Increase mAs and kVp in order to...






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






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






20. This pertains to the size of the electron cloud and thus directly to the number of x-ray produced






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






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






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






24. What must have little or no 'afterglow'






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






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






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






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






29. Affects both density and contrast






30. Has a negative charge






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

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






33. For bladder cystography - we use what contrast material instead of barium






34. AgBr + x-rays =






35. Safe Operating Procedures






36. If the x-ray tube is not 36-40 inches from the grid - this is called the






37. These screens are high speed - they decrease exposure - poorer detail - able to penetrate thicker areas






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






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






40. Redness of the skin






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






42. If the kVp is too high






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






44. 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






45. Collimator






46. Increase developing time and temp of developing fluid






47. Rotating anode






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






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






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