Show:
I hear you knockin
************
Ride the wave ~^~^~^~
Are you for real?
????????????
Wrap it up!
!!!!!!!!!!!!!!
Go with the flow :)
~~~~
100
Fraction of time the transducer emits sound.
What is "duty factor"
100
Velocity of the ultrsound wave is determined by:
What is "medium"
100
Apparent structures that are not real, missing, and/or improperly located.
What is "artifact"
100
Material in front of transducer face.
What is "matching layer"
100
Flow is straight and parallel with maximum flow speed at the center.
What is "laminar flow"
200
Vertical thickening occuring on a trace recording.
What is "spectral broadening"
200
Length of space over which one cycle occurs.
What is "wavelength"
200
Multiple reflection can occur between the transducer and a strong reflector.
What is "reverberation"
200
Rectangular elements arranged in a line.
What is "linear array"
200
Flow pattern is radom and chaotic.
What is "turbulence or turbulent flow"
300
Reflected frequency minus incident frequency.
What is "doppler shift"
300
Speed which a wave moves through a medium.
What is "propagation speed"
300
Displaces structures laterally from their correct location.
What is "refraction"
300
Annular array transducer will have this type of image format.
What is "sector"
300
Is density times propagation speed.
What is "impedance"
400
Frequency at which aliasing occurs.
What is "Nyquist limit"
400
Region from which pulsed Doppler echoes are accepted.
What is "sample volume"
400
Strengthening of echoes distal to a weakly attenuating structure.
What is "enhancement"
400
Improves resolution in the diagnostic tranducer.
What is "focusing"
400
Production and behavior of gas bubbles in sound.
What is "cavitation"
500
A mathematical technique for obtaining a Doppler frequency spectrum.
What is "Fourier transform"
500
Relationship between the incidence and transmission angles.
What is "Snell's Law"
500
Places structures much closer to the surface that they should be.
What is "range ambiguity"
500
Temperature at which an element material loses its piezoelectric properties.
What is "Curie point"
500
Pressure reduction in an area of high flow speed.
What is "Bernoulli effect"