ARDMS SPI Exam 2023 with solved
Answers. Graded A+
Which gain will increase the risk of bioeffects?
a. transmit
b. receive
c. gain
d. overall gain - -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 - -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
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
Answers. Graded A+
Which gain will increase the risk of bioeffects?
a. transmit
b. receive
c. gain
d. overall gain - -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 - -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
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
