ARDMS Exam SPI Topic 4 Question 7 Discussion

Actual exam question for ARDMS's Sonography Principles and Instrumentation exam

Question #: 7
Topic #: 4

[All Sonography Principles and Instrumentation Questions]

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

ABaseline

BScale

CMap

DInvert

Show Suggested Answer

Suggested Answer: B

The color bar on a Doppler ultrasound display indicates the range of velocities that the system can detect and display. In color bar A, the scale is set to a higher maximum velocity (64 cm/s), while in color bar B, the scale is set to a lower maximum velocity (16 cm/s). Adjusting the scale (or velocity range) changes the upper and lower limits of the velocities displayed, which affects the sensitivity of the Doppler system to detect flow velocities. Lowering the scale allows for better visualization of lower velocities, but it may also increase the likelihood of aliasing for higher velocities.

American Registry for Diagnostic Medical Sonography (ARDMS). Sonography Principles and Instrumentation (SPI) Examination Review Guide.

by Michael at Jun 21, 2024, 10:05 PM

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2 months ago

Hmm, I think it's gotta be B) Scale. Adjusting the scale would definitely change the appearance of the color bars.

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Golda

1 months ago

User 2: I disagree, I believe it's B) Scale.

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Ma

1 months ago

User 1: I think it's A) Baseline.

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Ozell

2 months ago

I believe it was Invert because of the contrast in colors.

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Tegan

2 months ago

I think the color control adjusted was Scale.

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