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- 1. Open EndedWhat are the two kinds of resolution?
- 2. Open EndedSpatial resolution can be divided into 3 types, what are they?
- 3. Open EndedWhat is the definition of axial resolution?
- 4. Fill in the BlankThe amount of separation needed to produce two separate reflectors is the __________ of the system.
- 5. Open EndedWhat are synonyms for axial resolution?
- 6. Open EndedWhat is axial resolution effected by?
- 7. Open EndedAxial resolution is the best with (high/low) frequency transducers.
- 8. Open EndedAxial resolution is best with (loosely/tightly) damped transducers?
- 9. Open EndedDoes a low or high number mean better axial resolution?
- 10. Fill in the BlankThe distance between the reflectors must be ___________ the axial resolution.
- 11. Open EndedAxial resolution is equal to...
- 12. Open EndedWhen the distance between the dots is greater than the axial resolution, how many dots do you see?
- 13. Open EndedWhen the distance between the dots is equal to the axial resolution, how many dots do you see?
- 14. Open EndedWhen the distance between the dots is less than the axial resolution, how many dots do you see?
- 15. Open EndedDoes axial resolution vary with depth?
- 16. Open EndedDoes good axial resolution have a transducer with a high or low Q factor?
- 17. Open EndedHow can we decrease the SPL?
- 18. Open EndedCan the operator change the SPL?
- 19. Open EndedWhat is SPL? (equation)
- 20. Fill in the BlankThe smaller the ____________ the better the axial resolution.
- 21. Open EndedWhat two qualities must a transducer have to have the best axial resolution?
- 22. Open EndedWhat happens to axial resolution as you get farther away from the transducer?
- 23. Open EndedIf axial resolution is improved, what happens to its numerical value?
- 24. Open EndedWhat is the definition of lateral resolution?
- 25. Open EndedIn lateral resolution the reflectors are (parallel/perpendicular) to the beam**?
- 26. Open EndedIn axial resolution the reflectors are (parallel/perpendicular) to the beam?
- 27. Open EndedWhat does lateral resolution depend on? (3)
- 28. Open EndedWhat are the synonyms for lateral resolution?
- 29. Open EndedHow do you improve lateral resolution?
- 30. Open EndedDefine aperture.
- 31. Open EndedAperture is also known as...
- 32. Open EndedThe shape of the beam varies due to what?
- 33. Open EndedWhat is the most narrow portion of a beam?
- 34. Open EndedWhat happens to the beam after the focal zone?
- 35. Open EndedWhat is the Fresnel zone?
- 36. Open EndedWhat causes the length of the near zone to vary?
- 37. Open EndedWhat is the Fraunhofer zone?
- 38. Open EndedWhere does the length of the far zone begin?
- 39. Open EndedAt which two points are the beam diameter and element diameter equal?
- 40. Open EndedThe focal zone is equal to..
- 41. Open EndedWhy does an unfocused transducer have a natural focal zone?
- 42. Open EndedIf you aim at a space and receive echoes in return you have (good/poor) lateral resolution.
- 43. Open EndedIf you aim at a space and do not receive echoes in return you have (good/poor) lateral resolution.
- 44. Open EndedHow do we decrease beam diameter? (vague answer)
- 45. Fill in the BlankSmaller diameter probes have a ______ near zone and ____ divergence in the far field.
- 46. Fill in the BlankLarger diameter probes have a ________ near zone and _______ divergence in the far field.
- 47. Fill in the BlankIf you want good lateral resolution in the near field you should use a transducer with a ____________ diameter.
- 48. Fill in the BlankIf you want good lateral resolution in the far field you should use a transducer with a ___________ diameter.
- 49. Open EndedIf the element diameter increases what happens to the near zone length?
- 50. Open EndedWhat happens to the near zone length when frequency increases?
- 51. Open EndedWhat happens to the near zone length if frequency decreases.
- 52. Open EndedFrequency and length of near zone are (directly/inversely) related.
- 53. Open EndedAperture and near zone length are (directly/inversely) related?
- 54. Open EndedAperture and divergence in the far field are (directly/inversely) related.
- 55. Open EndedA smaller beam diameter does what to the divergence in the far field.
- 56. Open EndedA larger beam diameter does what to the divergence in the far field?
- 57. Open EndedWhat is diffraction?
- 58. Open EndedThe smaller the aperture the (more/less) divergence.
- 59. Open EndedMost machines have better (axial/lateral) resolution.
- 60. Open EndedSlice thickness is also referred to as...
- 61. Open EndedWhat does the elevational plane refer to?
- 62. Open EndedFor better imaging we want a (thick/thin) slice thickness.
- 63. Open EndedWhat is a 1D/1.5D array?
- 64. Open EndedA 1D array is focused (mechanically/electronically).
- 65. Open EndedA 1.5D array is focused (mechanically/electronically).
- 66. Open EndedWhat is the difference between a 1D and a 1.5D array?
- 67. Open EndedWhat is a 2D array?
- 68. Open EndedTemporal resolution refers to...
- 69. Open EndedWhen depth increases the frame rate...
- 70. Open EndedWhen depth increases the PRF...
- 71. Open EndedIt takes less time to image (deep/shallow) structures?
- 72. Open EndedThe more shallow an object the (better/worse) the frame rate.
- 73. Open EndedIf you have more than one focal zone the frame rate...
- 74. Open EndedWhat type of things hurt the frame rate?
- 75. Open EndedWhat 3 things can cause a bad frame rate?
- 76. Open EndedAs the line density increases the frame rate....
- 77. Open EndedWhat does line density refer to?
- 78. Open EndedIncrease in PRF means depth has...
- 79. Open EndedPRF and depth are (directly/inversely) related.
- 80. Open EndedDepth and frame rate are (directly/inversely) related.
- 81. Open EndedPRF and frame rate are (directly/inversely) related.
- 82. Open EndedFrame rate is equal to... (think equation)
- 83. Open EndedWhen will there be depth ambiguity?
- 84. Open EndedWhen will we avoid depth ambiguity?
- 85. Open EndedHow do we calculate depth ambiguity?
- 86. Open EndedWhat is the LPF determined by?
- 87. Open EndedWhat does temporal resolution depend on?
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