ARDMS SPI ACTUAL EXAM 2024 NEWEST
EXAM 150 DETAILED QUESTIONS AND
GUARANTEED ANSWERS ALREADY TOP
RATED GRADED A+.REVISED
Quality Factor= Fundamental frequency/ bandwidth - ANSWER- This allows doses of
different types of radiation to be compared for their biological effects.
Clinical imaging transducers are: - ANSWER- wide bandwidth; low q factor
Power/area= - ANSWER- Intensity
Increasing wavelength will ___________ frequency.
a. increase
b. decrease
c. not change
d. cannot be predicted. - ANSWER- b. decrease
Which gain will increase the risk of bioeffects?
a. transmit
b. receive
c. gain
d. overall gain - 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 - 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 - ANSWER- b. turbulent flow
With pulse wave Doppler axial resolution: - ANSWER- degrades
What color is usually use in color flow Doppler variance map to indicate turbulent flow? -
ANSWER- green
Doppler high pass filter eliminates: - ANSWER- high amplitude signals; low velocity flow
The Doppler wall filter is considered a: - 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 - 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 - 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 - 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 - ANSWER- e. absence of sampling rate
The range for ultrasound begins:
a. 20 Hz
b. 20,000 Hz
c. 2 MHz
d. 15 MHz - 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 - 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 - ANSWER- c. autocorrelation
EXAM 150 DETAILED QUESTIONS AND
GUARANTEED ANSWERS ALREADY TOP
RATED GRADED A+.REVISED
Quality Factor= Fundamental frequency/ bandwidth - ANSWER- This allows doses of
different types of radiation to be compared for their biological effects.
Clinical imaging transducers are: - ANSWER- wide bandwidth; low q factor
Power/area= - ANSWER- Intensity
Increasing wavelength will ___________ frequency.
a. increase
b. decrease
c. not change
d. cannot be predicted. - ANSWER- b. decrease
Which gain will increase the risk of bioeffects?
a. transmit
b. receive
c. gain
d. overall gain - 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 - 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 - ANSWER- b. turbulent flow
With pulse wave Doppler axial resolution: - ANSWER- degrades
What color is usually use in color flow Doppler variance map to indicate turbulent flow? -
ANSWER- green
Doppler high pass filter eliminates: - ANSWER- high amplitude signals; low velocity flow
The Doppler wall filter is considered a: - 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 - 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 - 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 - 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 - ANSWER- e. absence of sampling rate
The range for ultrasound begins:
a. 20 Hz
b. 20,000 Hz
c. 2 MHz
d. 15 MHz - 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 - 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 - ANSWER- c. autocorrelation
