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ARDMS SPI Practice Exam Questions
Sonography Principles and Instrumentation
Total Questions : 187
Update Date : August 24, 2026
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ARDMS SPI Sample Question Answers
Question # 1What is the benefit of using a wall filter?
A. Reduces aliasing
B. Increases velocity range
C. Increases signal-to-noise ratio
D. Removes low-frequency signals
Question # 2
What is effected by increasing the color scale?
A. The Nyquist limit is increased
B. More colors are displayed
C. The color box width decreases
D. The color priority decreases
Question # 3
Which factor influences color flow imaging frame rate?
A. Filter selection
B. Dynamic range
C. Line density
D. Variance map selection
Question # 4
Which factor has a positive effect on temporal resolution?
A. Increase in scan depth
B. Use of spatial compounding
C. Increase in number of focal zones
D. Use of narrow sector width
Question # 5
Which type of display process rescans only the region of interest and improves resolution?
A. Read magnification
B. Write magnification
C. Spatial compounding
D. Frequency compounding
Question # 6
Which resolution is degraded when utilizing multiple transmit focal zones?
A. Temporal
B. Lateral
C. Axial
D. Elevational
Question # 7
If the speed of sound in a medium is less than the average speed of sound in soft tissue, where will the echo be placed on an image?
A. Too shallow
B. Not visualized
C. Laterally
D. Too deep
Question # 8
Which feature is a characteristic of write magnification?
A. Post-processing
B. New data acquisition
C. Larger pixel size
D. Decreased spatial resolution
Question # 9
What is ensemble length (packet size)?
A. Length of pulses per scan line
B. Number of pulses along a scan line
C. Amplitude of pulses along the scan line
D. Velocity of pulses along the scan line
Question # 10
Which gray-scale artifact occurs when a structure attenuates less than the adjacent tissues?
A. Enhancement
B. Range ambiguity
C. Refraction
D. Shadowing
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