ARDMS SPI EXAM LATEST REAL EXAM
BANK 170 QUESTIONS AND CORRECT
ANSWERS|A GRADE||ARDMS SPI STUDY
GUIDE BRAND NEW VERSION!!
VERSION A
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)
1|Page
,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 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 - CORRECT ANSWER ✔✔- 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
Pulse repetition frequency - CORRECT ANSWER ✔✔- Number 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: -
CORRECT ANSWER ✔✔- increase transducer diameter
The range of frequencies produced by a damped PZT element is called:
2|Page
,a. fundamental frequencies
b. Q Factor
c. near 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
Quality Factor= Fundamental frequency/ bandwidth - CORRECT ANSWER ✔✔-
This allows doses of different types of radiation to be compared for their biological
effects.
Clinical imaging transducers are: - CORRECT ANSWER ✔✔- wide bandwidth;
low q factor
3|Page
, Power/area= - CORRECT ANSWER ✔✔- Intensity
Increasing wavelength will ___________ frequency.
a. increase
b. decrease
c. not change
d. cannot be predicted. - CORRECT ANSWER ✔✔- b. 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 - CORRECT ANSWER ✔✔- e. beam width
Which gain will increase the risk of bioeffects?
a. transmit
b. receive
c. gain
d. overall gain - CORRECT ANSWER ✔✔- a. transmit
Which of the following is considered the memory of an ultrasound instrument?
a. pulser
b. transducer
c. receiver
4|Page
BANK 170 QUESTIONS AND CORRECT
ANSWERS|A GRADE||ARDMS SPI STUDY
GUIDE BRAND NEW VERSION!!
VERSION A
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)
1|Page
,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 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 - CORRECT ANSWER ✔✔- 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
Pulse repetition frequency - CORRECT ANSWER ✔✔- Number 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: -
CORRECT ANSWER ✔✔- increase transducer diameter
The range of frequencies produced by a damped PZT element is called:
2|Page
,a. fundamental frequencies
b. Q Factor
c. near 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
Quality Factor= Fundamental frequency/ bandwidth - CORRECT ANSWER ✔✔-
This allows doses of different types of radiation to be compared for their biological
effects.
Clinical imaging transducers are: - CORRECT ANSWER ✔✔- wide bandwidth;
low q factor
3|Page
, Power/area= - CORRECT ANSWER ✔✔- Intensity
Increasing wavelength will ___________ frequency.
a. increase
b. decrease
c. not change
d. cannot be predicted. - CORRECT ANSWER ✔✔- b. 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 - CORRECT ANSWER ✔✔- e. beam width
Which gain will increase the risk of bioeffects?
a. transmit
b. receive
c. gain
d. overall gain - CORRECT ANSWER ✔✔- a. transmit
Which of the following is considered the memory of an ultrasound instrument?
a. pulser
b. transducer
c. receiver
4|Page
