ARDMS - SPI Exam Verified Multiple Choice and
Conceptual Actual Emended Exam Questions With
Reviewed 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. 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
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
3. 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
4. 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
,5. 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)
6. 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
7. 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
8. 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
9. Pulse repetition frequency - 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.
10. Also the number of pulses created each second
11. The best way to increase the near field length of an ultrasound beam is to: - ANSWER
increase transducer diameter
12. The range of frequencies produced by a damped PZT element is called:
, a. fundamental frequencies
b. Q Factor
c. near field
d. bandwith - ANSWER d. bandwidth
13. 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 - ANSWER d. duty factor; the maximum value is 1, the minimum
is 0
14. The unit of duty factor is:
a. Hz
b. mm
c. ms
d. unitless - ANSWER d. unitless
15. Quality Factor= Fundamental frequency/ bandwidth - ANSWER This allows doses of
different types of radiation to be compared for their biological effects.
16. Clinical imaging transducers are: - ANSWER wide bandwidth; low q factor
17. Power/area= - ANSWER Intensity
18. Increasing wavelength will ___________ frequency.
a. increase
b. decrease
c. not change
d. cannot be predicted. - 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 - ANSWER e. 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
d. cannot be predicted - ANSWER b. different
A mechanical transducer utilizes:
a. transmit focus
b. receive focus
c. fixed focus
d. dynamic aperture focusing - ANSWER c. fixed focus; sonographer cannot determine the
location of # of foci. mechanical transducer uses cross sectional imaging, rotating wheel,
wobbler, oscillating mirror
The transducer frequency is primarily determined by the transducer element:
a. diameter
b. thickness
c. propagation speed
d. type - ANSWER b. thickness
Conceptual Actual Emended Exam Questions With
Reviewed 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. 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
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
3. 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
4. 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
,5. 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)
6. 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
7. 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
8. 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
9. Pulse repetition frequency - 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.
10. Also the number of pulses created each second
11. The best way to increase the near field length of an ultrasound beam is to: - ANSWER
increase transducer diameter
12. The range of frequencies produced by a damped PZT element is called:
, a. fundamental frequencies
b. Q Factor
c. near field
d. bandwith - ANSWER d. bandwidth
13. 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 - ANSWER d. duty factor; the maximum value is 1, the minimum
is 0
14. The unit of duty factor is:
a. Hz
b. mm
c. ms
d. unitless - ANSWER d. unitless
15. Quality Factor= Fundamental frequency/ bandwidth - ANSWER This allows doses of
different types of radiation to be compared for their biological effects.
16. Clinical imaging transducers are: - ANSWER wide bandwidth; low q factor
17. Power/area= - ANSWER Intensity
18. Increasing wavelength will ___________ frequency.
a. increase
b. decrease
c. not change
d. cannot be predicted. - 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 - ANSWER e. 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
d. cannot be predicted - ANSWER b. different
A mechanical transducer utilizes:
a. transmit focus
b. receive focus
c. fixed focus
d. dynamic aperture focusing - ANSWER c. fixed focus; sonographer cannot determine the
location of # of foci. mechanical transducer uses cross sectional imaging, rotating wheel,
wobbler, oscillating mirror
The transducer frequency is primarily determined by the transducer element:
a. diameter
b. thickness
c. propagation speed
d. type - ANSWER b. thickness
