ARDMS SPI Exam| 60 QUESTIONS|
ANSWERS 100% CORRECT
Which gain will increase the risk of bioeffects?
a. transmit
b. receive
c. gain
d. overall gain Correct Answer: a. transmit
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 Correct Answer: e. digital scan converter
Spectral broadening suggest:
a. laminar flow
b. turbulent flow
c. flow away from the transducer
d. flow towards the transducer Correct Answer: b. turbulent flow
With pulse wave Doppler axial resolution: Correct Answer: degrades
What color is usually use in color flow Doppler variance map to indicate turbulent
flow? Correct Answer: green
Doppler high pass filter eliminates: Correct Answer: high amplitude signals; low
velocity flow
The Doppler wall filter is considered a: Correct Answer: high pass filter
The Nyquist Limit is equal to:
a. propagation speed x frequency
b. propagation speed/ wavelength
c. PRF/2
d. 4xV^2 Correct Answer: 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 Correct Answer: 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 Correct Answer: 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 Correct Answer: e. absence of sampling rate
The range for ultrasound begins:
a. 20 Hz
b. 20,000 Hz
c. 2 MHz
d. 15 MHz Correct Answer: 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 Correct Answer: 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 Correct Answer: c. autocorrelation
ANSWERS 100% CORRECT
Which gain will increase the risk of bioeffects?
a. transmit
b. receive
c. gain
d. overall gain Correct Answer: a. transmit
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 Correct Answer: e. digital scan converter
Spectral broadening suggest:
a. laminar flow
b. turbulent flow
c. flow away from the transducer
d. flow towards the transducer Correct Answer: b. turbulent flow
With pulse wave Doppler axial resolution: Correct Answer: degrades
What color is usually use in color flow Doppler variance map to indicate turbulent
flow? Correct Answer: green
Doppler high pass filter eliminates: Correct Answer: high amplitude signals; low
velocity flow
The Doppler wall filter is considered a: Correct Answer: high pass filter
The Nyquist Limit is equal to:
a. propagation speed x frequency
b. propagation speed/ wavelength
c. PRF/2
d. 4xV^2 Correct Answer: 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 Correct Answer: 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 Correct Answer: 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 Correct Answer: e. absence of sampling rate
The range for ultrasound begins:
a. 20 Hz
b. 20,000 Hz
c. 2 MHz
d. 15 MHz Correct Answer: 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 Correct Answer: 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 Correct Answer: c. autocorrelation
