ch 8 axial resolution

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Author:
rbeacr
ID:
141820
Filename:
ch 8 axial resolution
Updated:
2012-03-15 16:43:38
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axial resolution
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Description:
axial resolution
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  1. axial resolution
    the ability of the system to display two structures that are very close together when the structure is parallel to the sound beams main axis
  2. axial resolution formula
    axial resolution = SPL/2

    little numbers are good
  3. axial resolution also called
    Lard
    • longitudinal
    • axial
    • range
    • radial
    • depth
  4. axial resolution units
    mm cm distance
  5. axial resolution is determined by
    spl
  6. formula for spl
    wavelegnth x # cycles
  7. formula for wavelegnth
    c/f
  8. what limits the number of cycles in a pulse
    damping material
  9. what kind of transducers have the best axial resolution
    high freq highly damped transducers
  10. what are the two formulas for freq
    =1/period

    = c of element/ thickness of element x 2
  11. spl and axial resoulution are related
    inversely
  12. spl and wavelegnth are related
    directly
  13. f and wavelegnth are related
    inversely
  14. what transducer component effect axial resolution
    • frequency
    • damping
  15. ar in soft tissue
    ar= (.77 x # cycles) / f

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