Studied by 22 people
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Part of the transducer that determines SPL
Damping layer
Sound of travel in soft tissue
1.54 mm per second
The PRP refers to
On and off time
For a given medium, if everything stays the same, but the stiffness increases what happens to your propagation speed?
Increases
When you change the depth when scanning a patient what part of the pulse wave are you actually changing?
Off-time
What region of the beam has the best lateral resolution?
Focal point
Frequency of the voltage sent to the crystal of a pulse wave transducer is 4 MHz. What is the frequency of the sound the transducer makes?
Not applicable
Sound waves travel slowest in
Gas
Which of the intensities is always the highest
SPTP
The scanning frequency of the transducer is determined by
The thickness of the transducer
The pulse duration refers too
How long does the pulse last (on-time)
Which of the following transducers would not allow you to see the left kidney in a pediatric patient
Continues wave
Generally soundwaves will propagate slower in a
Gas
Sound waves travel fastest in a solid. Slowest in a gas And a medium self to tissues/liquids
True or false
True
The length of one cycle is called the
Wavelength
The time of one cycle is called the
Period
Sound requires a medium in order to travel
T/F
True
Two waves that formed to create a larger wave
Constructive interference
When the ultrasound transducer is generating a beam that enters the body the process is called
Piezoelectric
Type of transducer that uses PZT crystals that are shaped like donuts
Annular array
A 5 MHz pulse consisting of three cycles is produced by a transducer, How many amplitude are there in each cycle?
2
Which of the four does not belong?
Wavelength, frequency, period, Amplitude.
Amplitude
What component contains the tungsten particles?
Damping layer
Lateral resolution is the most closely related to
Transducer diameter
The reduction of energy of sound propagates
attenuation
The time for one pulse to occur
Pulse duration
With all else remaining constant the speed at which sound travels depends on the
Medium
If PZT is 6, what is the matching layer?
3
