ch 8 axial resolution
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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

axial resolution formula
axial resolution = SPL/2
little numbers are good

axial resolution also called
Lard
 longitudinal
 axial
 range
 radial
 depth

axial resolution units
mm cm distance

axial resolution is determined by
spl

formula for spl
wavelegnth x # cycles

formula for wavelegnth
c/f

what limits the number of cycles in a pulse
damping material

what kind of transducers have the best axial resolution
high freq highly damped transducers

what are the two formulas for freq
=1/period
= c of element/ thickness of element x 2

spl and axial resoulution are related
inversely

spl and wavelegnth are related
directly

f and wavelegnth are related
inversely

what transducer component effect axial resolution

ar in soft tissue
ar= (.77 x # cycles) / f