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Total 56 questions
Exam Code: SPI                Update: Oct 15, 2025
Exam Name: Sonography Principles and Instrumentation

ARDMS Sonography Principles and Instrumentation SPI Exam Dumps: Updated Questions & Answers (October 2025)

Question # 1

How is the wavelength affected when switching from a 10 MHz transducer to a 5 MHz transducer?

A.

Halves

B.

Quarters

C.

Quadruples

D.

Doubles

Question # 2

Which change would lead to a reduction in frame rate?

A.

Increasing the number of focal zones

B.

Increasing the pulse repetition frequency (PRF)

C.

Decreasing the depth

D.

Decreasing the sector width

Question # 3

Which action may reduce the number of lines in a frame without a loss of temporal resolution?

A.

Reducing the frame rate

B.

Narrowing the field of view

C.

Decreasing the display depth

D.

Decreasing the transducer frequency

Question # 4

Which adjustment would reduce the noise in the Doppler waveform in this image?

A.

Decreasing Doppler gain

B.

Decreasing velocity scale

C.

Increasing the gate size

D.

Increasing sweep speed

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

Which action is the first step for the removal of visible contaminants from the transducer?

A.

Disinfect

B.

Sterilize

C.

Clean

D.

Pasteurize

Question # 7

What is true regarding the display for color Doppler?

A.

A positive shift is always above the baseline

B.

A positive shift is always red

C.

A negative shift is always venous flow

D.

A negative shift always requires using a lower wall filter

Question # 8

Which will affect the gray-scale of a 2-D image?

A.

Doppler gain

B.

Depth of field

C.

Pulse repetition frequency (PRF)

D.

Dynamic range

Question # 9

Which situation can cause color Doppler noise to overwrite an anechoic or hypoechoic area?

A.

Color packet size set too low

B.

Color pulse repetition frequency (PRF) set too high

C.

Color priority set too low

D.

Color gain set too high

Question # 10

Which adjustment will reduce the appearance of posterior shadowing artifact?

A.

Increasing spatial compounding

B.

Decreasing dynamic range

C.

Decreasing the number of focal zones

D.

Increasing persistence

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Total 56 questions

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