ARDMS SPI - Mock Exam 2022 Questions And Answers
Materials used for the matching layer of a transducer must have an impedance between
impedance levels of the ______________ Correct Ans ~ skin and PE element
Which of the following is an abnormality that would lead to an imcrease in the Reynolds
number? Correct Ans ~ stenosis of the vessel
If a 3.5 MHz wave is transmitted through the media listed below, the longest wavelength
will be seen in the wave moving through ____________ Correct Ans ~ bone
The speed of sound is fastest in bone. Longer wavelengths occur with faster propagation
speeds
If you are using a transducer with a 100 microsecond pulse repetition perios, a Doppler
shift greater than ____________ will lead to aliasing on the display. Correct Ans ~ 5
kHz
Which of the following persistence levels should be used to optimize color Doppler
imaging of cardiac structures? Correct Ans ~ Low
Which of the following artifacts can NOT be corrected by increasing the wall filter
setting? Correct Ans ~ aliasing artifact
What changes occur to the ultrasound beam when timed pulses are emitted from the edge
elements to the center elements of the phased transducer Correct Ans ~ electronic
focusing occurs
Which of the following correctly describes Power Doppler Correct Ans ~ Color
display is not angle dependent
Which of the following lists the normal range of intensities used in diagnostic Doppler
US? Correct Ans ~ 0.2-400 mW/cm
- Average range of diagnostic intensities for all types of US imaging: 2 - 500 mW/cm^2
- 2D imaging intensities are less than w/ Doppler
- Average range of Doppler intensities: 0.2-400 mW/cm^2
- 2D imaging averave range 0.1-300 mW/cm^2
Snell's law describes what acoustic principle? Correct Ans ~ refraction
Materials used for the matching layer of a transducer must have an impedance between
impedance levels of the ______________ Correct Ans ~ skin and PE element
Which of the following is an abnormality that would lead to an imcrease in the Reynolds
number? Correct Ans ~ stenosis of the vessel
If a 3.5 MHz wave is transmitted through the media listed below, the longest wavelength
will be seen in the wave moving through ____________ Correct Ans ~ bone
The speed of sound is fastest in bone. Longer wavelengths occur with faster propagation
speeds
If you are using a transducer with a 100 microsecond pulse repetition perios, a Doppler
shift greater than ____________ will lead to aliasing on the display. Correct Ans ~ 5
kHz
Which of the following persistence levels should be used to optimize color Doppler
imaging of cardiac structures? Correct Ans ~ Low
Which of the following artifacts can NOT be corrected by increasing the wall filter
setting? Correct Ans ~ aliasing artifact
What changes occur to the ultrasound beam when timed pulses are emitted from the edge
elements to the center elements of the phased transducer Correct Ans ~ electronic
focusing occurs
Which of the following correctly describes Power Doppler Correct Ans ~ Color
display is not angle dependent
Which of the following lists the normal range of intensities used in diagnostic Doppler
US? Correct Ans ~ 0.2-400 mW/cm
- Average range of diagnostic intensities for all types of US imaging: 2 - 500 mW/cm^2
- 2D imaging intensities are less than w/ Doppler
- Average range of Doppler intensities: 0.2-400 mW/cm^2
- 2D imaging averave range 0.1-300 mW/cm^2
Snell's law describes what acoustic principle? Correct Ans ~ refraction
