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ARDMS SPI Exam Dumps
Sonography Principles and Instrumentation
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ARDMS SPI Sample Questions
Question # 1What is an advantage of pulsed-wave Doppler over continuous-wave Doppler?
A. Increased sensitivity to slow flow
B. Unlimited maximum detectable velocity
C. Range resolution
D. High signal-to-noise ratio
Question # 2
Which type of resolution will be improved by decreasing the depth of field?
A. Lateral
B. Temporal
C. Axial
D. Elevational
Question # 3
Which control should a sonographer use to change contrast resolution?
A. Reject
B. Output power
C. Gain
D. Dynamic range
Question # 4
Which function is the purpose of the matching layer?
A. Convert acoustic to electrical energy
B. Allow sequential firing of elements
C. Reduce ringing of the crystals
D. Increase sound transmission
Question # 5
Which artifact causes a reflector to be improperly positioned on the display?
A. Acoustic shadowing
B. Speckle
C. Enhancement
D. Range ambiguity
Question # 6
What relates bandwidth to operating frequency?
A. Autocorrelation
B. Nyquist limit
C. Focal zone
D. Quality factor
Question # 7
Why is a higher frequency transducer a better choice for imaging superficial structures?
A. Decreased attenuation
B. Increased pulse repetition period
C. Longer spatial pulse length
D. Improved axial resolution
Question # 8
Which index is related to the likelihood of cavitation?
A. Thermal
B. Temporal
C. Mechanical
D. Acoustical output
Question # 9
What is the effect of increasing the overall gain?
A. Increase in the number of returning signals
B. Amplification of signals from all depths
C. Compensation for attenuation at selected depths
D. Increase in the amplitude of the transmitted pulse