ARDMS SPI EXAM / ARDMS SPI LATEST EXAM 2024
ACTUAL QUESTIONS AND CORRECT VERIFIED
ANSWERS |GUARANTEED PASS
Which gain will increase the risk of bioeffects?
a. transmit
b. receive
c. gain
d. overall gain - ANSWERa. 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 - ANSWERe. digital scan converter
Spectral broadening suggest:
a. laminar flow
b. turbulent flow
c. flow away from the transducer
d. flow towards the transducer - ANSWERb. turbulent flow
With pulse wave Doppler axial resolution: - ANSWERdegrades
What color is usually use in color flow Doppler variance map to indicate turbulent flow? -
ANSWERgreen
The Doppler wall filter is considered a: - ANSWERhigh pass filter
The Nyquist Limit is equal to:
a. propagation speed x frequency
b. propagation speed/ wavelength
c. PRF/2
d. 4xV^2 - ANSWERc. 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 - ANSWERb. ring down
An increase in red blood cell velocity will_____ the Doppler Shift:
a. increase
b. decrease
c. not change
d. cannot be predicted - ANSWERa. 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 - ANSWERe. absence of sampling rate
The range for ultrasound begins:
a. 20 Hz
b. 20,000 Hz
c. 2 MHz
d. 15 MHz - ANSWERb. 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 - ANSWERd. 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 - ANSWERc. 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
Pulse repetition frequency - ANSWERNumber of pulses that an ultrasound system
transmits into the body each second. Hz. Typically 4-15 KHz. PRF and depth of a view
are inversely related: When system is imaging deeper, the pulse repetition frequency is
lower.
Also the number of pulses created each second
, The best way to increase the near field length of an ultrasound beam is to: -
ANSWERincrease transducer diameter
The range of frequencies produced by a damped PZT element is called:
a. fundamental frequencies
b. Q Factor
c. near field
d. bandwith - ANSWERd. bandwidth
The percentage of time that the ultrasound instrument is emitting ultrasound is called:
a. PRF
b. pulse duration
c. pulse repetition period
d. duty factor - ANSWERd. duty factor; the maximum value is 1, the minimum is 0
The unit of duty factor is:
a. Hz
b. mm
c. ms
d. unitless - ANSWERd. unitless
Quality Factor= Fundamental frequency/ bandwidth - ANSWERThis allows doses of
different types of radiation to be compared for their biological effects.
Increasing wavelength will ___________ frequency.
a. increase
b. decrease
c. not change
d. cannot be predicted. - ANSWERb. decrease
All of the following directly affect frame rate except:
a. depth of penetration
b. field of view
c. number of focuses
d. line density
e. beam width - ANSWERe. beam width
A reflection will occur at the boundary of two media if the acoustic impedences of the
two media are:
a. equal
b. different
c. unchanged
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