ARDMS SPI EXAM LATEST 2024-2025 QUESTIONS
AND ANSWERS GRADED A+
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
, d. transmit gain
e. overall gain Correct Answer: d. transmit gain; amplitude can be affected by
thesonographer
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 Correct Answer: c. autocorrelation
The range of frequencies produced by a damped PZT element is called:
a. fundamental frequencies
b. Factor
c. ear field
d. bandwith Correct Answer: d. 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 Correct Answer: d. 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 Correct Answer: d. unitless
Increasing wavelength will frequency.
a. increase
AND ANSWERS GRADED A+
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
, d. transmit gain
e. overall gain Correct Answer: d. transmit gain; amplitude can be affected by
thesonographer
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 Correct Answer: c. autocorrelation
The range of frequencies produced by a damped PZT element is called:
a. fundamental frequencies
b. Factor
c. ear field
d. bandwith Correct Answer: d. 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 Correct Answer: d. 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 Correct Answer: d. unitless
Increasing wavelength will frequency.
a. increase
