Basic Ultrasound Physics Review

QuizÂ by Megan Baumann

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32 questions
• Q1
Period and frequency have what type of relationship?
Inverse
Unrelated
Direct
60s
• Q2
Particles in a sound wave that vibrate back and forth parallel to the axis of the sound beam is what type of wave?
Mechanical
Electric
Transverse
Longitudinal
60s
• Q3
Two waves of the same frequency that have compressions at different times and locations results in:
Both constructive and destructive
Neither constructive or destructive
Destructive interference
Constructive interference
60s
• Q4
As the density of a medium increases, what happnens to propagation speed?
Decreases
Remains Unchanged
Increases
60s
• Q5
The number of pulses per second is the:
Duty factor
PRP
PRF
Period
60s
• Q6
What type of relationship do power and intensity have?
Unrelated
Inversely related
Directly related
60s
• Q7
Power is equal to
Amplitude squared
Intensity squared
Half the amplitude
Intensity x amplitude
60s
• Q8
Which of the following statements is true?
Deep imaging, Low PRF, high duty factor
Deep imaging, High PRF, High duty factor
Shallow imaging, High PRF, High duty factor
Shallow imaging, Low PRF, Low Duty factor
60s
• Q9
Spatial Pulse length is equal to:
Period x # of cycles
Period x Wavelength
Wavelength / #number of cycles
Wavelength x # of cycles
60s
• Q10
Which intensity is most relevant to bioeffects?
SPPA
SATA
SPTA
SAPA
60s
• Q11
Which of the following is in increasing order of intensity?
SATA, SPPA, SPTP SAPA
SPTP, SPPA, SPTA, SATA
SPPA, SATA, SPTA, SPTP
SATA, SPTA, SPPA, SPTP
60s
• Q12
Which of the following is true regarding continuous wave transducers?
SATA = SAPA
SPTP=SAPA
SPPA = SPTP
60s
• Q13
Which type of reflection occurs at an irregular interface?
Disorganized
Specular
Backscatter
Rayleigh
60s
• Q14
In soft tissue, sound travels to a reflector and back to the transducer in 52 microseconds. What is the total distance traveled?
4mm
8mm
4cm
8cm
60s
• Q15
T/F: Backing material increases sensitivity
False
True
60s

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