ARDMS SPI Examination Readiness Toolkit
Questions and Answers (Verified Answers) | A+ |
100% Correct Questions and Answers
• Which of the following is considered the memory of an ultrasound instrument?
a. pulser
b. transducer
c. receiver
d. beam former
e. digital scan converter
f. display monitor -✓✓e. digital scan converter
• Spectral broadening suggest:
a. laminar flow
b. turbulent flow
c. flow away from the transducer
d. flow towards the transducer -✓✓b. turbulent flow
• With pulse wave Doppler axial resolution: -✓✓degrades
• What color is usually use in color flow Doppler variance map to indicate
turbulent flow? -✓✓green
• Doppler high pass filter eliminates: -✓✓high amplitude signals; low velocity flow
• The Doppler wall filter is considered a: -✓✓high pass filter
• The Nyquist Limit is equal to:
a. propagation speed x frequency
b. propagation speed/ wavelength
c. PRF/2
d. 4xV^2 -✓✓c. PRF/2
• Multiple echoes, equally spaced originating from a gas bubble is called:
a. comet tail
, b. ring down
c. slice thickness artifact
d. multipath -✓✓b. ring down
• An increase in red blood cell velocity will_____ the Doppler Shift:
a. increase
b. decrease
c. not change
d. cannot be predicted -✓✓a. increase
• The primary advantage of CW Doppler is:
a. range resolution
b. range discrimination
c. range ambiguity
d. range gating
e. absence of sampling rate -✓✓e. absence of sampling rate
• The range for ultrasound begins:
a. 20 Hz
b. 20,000 Hz
c. 2 MHz
d. 15 MHz -✓✓b. 20,000 Hz (useful frequency range for clinical imaging is 2MHz-
10MHz)
• Which instrument control affects the amplitude (dB) of the outgoing signal:
a. gain
b. receiver gain
c. TGC
d. transmit gain
e. overall gain -✓✓d. transmit gain; amplitude can be affected by the sonographer
• Which of the following is used to convert Doppler shift information into color:
a. high PRF
b. fast Fourier transform
c. autocorrelation
d. time interval histogram -✓✓c. autocorrelation
Questions and Answers (Verified Answers) | A+ |
100% Correct Questions and Answers
• Which of the following is considered the memory of an ultrasound instrument?
a. pulser
b. transducer
c. receiver
d. beam former
e. digital scan converter
f. display monitor -✓✓e. digital scan converter
• Spectral broadening suggest:
a. laminar flow
b. turbulent flow
c. flow away from the transducer
d. flow towards the transducer -✓✓b. turbulent flow
• With pulse wave Doppler axial resolution: -✓✓degrades
• What color is usually use in color flow Doppler variance map to indicate
turbulent flow? -✓✓green
• Doppler high pass filter eliminates: -✓✓high amplitude signals; low velocity flow
• The Doppler wall filter is considered a: -✓✓high pass filter
• The Nyquist Limit is equal to:
a. propagation speed x frequency
b. propagation speed/ wavelength
c. PRF/2
d. 4xV^2 -✓✓c. PRF/2
• Multiple echoes, equally spaced originating from a gas bubble is called:
a. comet tail
, b. ring down
c. slice thickness artifact
d. multipath -✓✓b. ring down
• An increase in red blood cell velocity will_____ the Doppler Shift:
a. increase
b. decrease
c. not change
d. cannot be predicted -✓✓a. increase
• The primary advantage of CW Doppler is:
a. range resolution
b. range discrimination
c. range ambiguity
d. range gating
e. absence of sampling rate -✓✓e. absence of sampling rate
• The range for ultrasound begins:
a. 20 Hz
b. 20,000 Hz
c. 2 MHz
d. 15 MHz -✓✓b. 20,000 Hz (useful frequency range for clinical imaging is 2MHz-
10MHz)
• Which instrument control affects the amplitude (dB) of the outgoing signal:
a. gain
b. receiver gain
c. TGC
d. transmit gain
e. overall gain -✓✓d. transmit gain; amplitude can be affected by the sonographer
• Which of the following is used to convert Doppler shift information into color:
a. high PRF
b. fast Fourier transform
c. autocorrelation
d. time interval histogram -✓✓c. autocorrelation
