Sonography Principles and Instrumentation (SPI) Free Practice Test

Question 1

Which artifact causes a simple cyst to appear to contain debris?

A. Slice thickness

B. Enhancement

C. Refraction

D. Range ambiguity

Correct Answer: A

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Question 2

What is the primary reason to use compression?

A. Increase line density

B. Adjust the contrast resolution

C. Reduce the focal region

D. Improve the axial resolution

Correct Answer: B

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Question 3

What is an advantage of pulsed-wave Doppler over continuous-wave Doppler?

A. Unlimited maximum detectable velocity

B. Range resolution

C. Increased sensitivity to slow flow

D. High signal-to-noise ratio

Correct Answer: B

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Question 4

Which artifact occurs when there is increased amplification of reflectors distal to a low-attenuating structure?

A. Reverberation

B. Mirror image

C. Enhancement

D. Refraction

Correct Answer: C

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Question 5

What is the effect of an increased aperture in a linear array transducer?

A. Decreased temporal resolution

B. Deeper focus

C. Shorter near-field length

D. Improved axial resolution

Correct Answer: B

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Question 6

At what Doppler angle to flow is the maximum Doppler shift frequency acquired?

A. 30 degrees

B. 90 degrees

C. 0 degrees

D. 60 degrees

Correct Answer: C

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Question 7

What produces increased attenuation within soft tissue?

A. Higher frequency of the ultrasound beam

B. Lower intensity of the ultrasound beam

C. Lower frequency of the ultrasound beam

D. Higher intensity of the ultrasound beam

Correct Answer: A

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Question 8

What sonographic artifact can result in a reflector that appears shallower than its true location?

A. Reverberation

B. Grating lobe

C. Acoustic speed error

D. Refraction

Correct Answer: C

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Question 9

Which color control was adjusted in color bar A to produce color bar B?

A. Baseline

B. Scale

C. Invert

D. Map

Correct Answer: B

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Question 10

Which factor does a string phantom evaluate?

A. Intensity values

B. Two-dimensional resolution

C. Slice thickness

D. Flow velocity

Correct Answer: D

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Question 11

Which characteristic of ultrasound transmission is directly proportional to an increase in frequency?

A. Attenuation

B. Wavelength

C. Pulse duration

D. Penetration

Correct Answer: A

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Question 12

What is the result of increased transducer damping?

A. Narrow beam width

B. Longer pulse length

C. Increased sensitivity

D. Improved axial resolution

Correct Answer: D

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Question 13

What improves the temporal resolution of color flow imaging?

A. Increasing number of color lines per frame

B. Decreasing pulse repetition frequency

C. Increasing ensemble length (packet size)

D. Decreasing width of the color field of view

Correct Answer: D

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Question 14

Which factor influences color flow imaging frame rate?

A. Variance map selection

B. Filter selection

C. Dynamic range

D. Line density

Correct Answer: D

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Question 15

Which color control adjustment caused the change from image A to image B?

A. Velocity scale

B. Wall filter

C. Map

D. Color packet size

Correct Answer: A

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ARDMS Sonography Principles and Instrumentation (SPI) Free Practice Test