ARDMS SPI Exam
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
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
