ARDMS SPI Exam
Study online at https://quizlet.com/_qp1ws
1. Which gain will increase the risk of bioeffects?
a. transmit
b. receive
c. gain
d. overall gain: a. transmit
2. Which of the following is considered the memory of an ultrasound instru-
ment?
a. pulser
b. transducer
c. receiver
d. beam former
e. digital scan converter
f. display monitor: e. digital scan converter
3. Spectral broadening suggest:
a. laminar flow
b. turbulent flow
c. flow away from the transducer
d. flow towards the transducer: b. turbulent flow
4. With pulse wave Doppler axial resolution:: degrades
5. What color is usually use in color flow Doppler variance map to indicate
turbulent flow?: green
6. Doppler high pass filter eliminates:: high amplitude signals; low velocity flow
7. The Doppler wall filter is considered a:: high pass filter
8. The Nyquist Limit is equal to:
a. propagation speed x frequency
b. propagation speed/ wavelength
c. PRF/2
d. 4xV^2: c. PRF/2
9. Multiple echoes, equally spaced originating from a gas bubble is called:
a. comet tail
b. ring down
1/7
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c. slice thickness artifact
d. multipath: b. ring down
10. An increase in red blood cell velocity will_____ the Doppler Shift:
a. increase
b. decrease
c. not change
d. cannot be predicted: a. increase
11. 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
12. 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)
13. 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
14. 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
b is incorrect because fast Fourier transform is the method used to process conventional Doppler shift information but
is too slow a method for color Doppler
2/7
Study online at https://quizlet.com/_qp1ws
1. Which gain will increase the risk of bioeffects?
a. transmit
b. receive
c. gain
d. overall gain: a. transmit
2. Which of the following is considered the memory of an ultrasound instru-
ment?
a. pulser
b. transducer
c. receiver
d. beam former
e. digital scan converter
f. display monitor: e. digital scan converter
3. Spectral broadening suggest:
a. laminar flow
b. turbulent flow
c. flow away from the transducer
d. flow towards the transducer: b. turbulent flow
4. With pulse wave Doppler axial resolution:: degrades
5. What color is usually use in color flow Doppler variance map to indicate
turbulent flow?: green
6. Doppler high pass filter eliminates:: high amplitude signals; low velocity flow
7. The Doppler wall filter is considered a:: high pass filter
8. The Nyquist Limit is equal to:
a. propagation speed x frequency
b. propagation speed/ wavelength
c. PRF/2
d. 4xV^2: c. PRF/2
9. Multiple echoes, equally spaced originating from a gas bubble is called:
a. comet tail
b. ring down
1/7
, ARDMS SPI Exam
Study online at https://quizlet.com/_qp1ws
c. slice thickness artifact
d. multipath: b. ring down
10. An increase in red blood cell velocity will_____ the Doppler Shift:
a. increase
b. decrease
c. not change
d. cannot be predicted: a. increase
11. 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
12. 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)
13. 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
14. 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
b is incorrect because fast Fourier transform is the method used to process conventional Doppler shift information but
is too slow a method for color Doppler
2/7
