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SPIExam-Topic4Question7Discussion

Actual exam question for 's SPI exam
Question #: 7
Topic #: 4
[All SPI Questions]

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

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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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Rikki
3 months ago
Wait, are we sure it’s not Baseline? That’s unexpected!
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Cherelle
3 months ago
Not sure, but I’m leaning towards Invert.
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Rosamond
3 months ago
I have a vague memory of the Map control being used in similar questions, but I can't recall if it applies here.
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Merlyn
3 months ago
I remember discussing the Invert control in class, but I don't think that's what we adjusted in this case.
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Ammie
3 months ago
This reminds me of a practice question where we had to identify color adjustments too. I feel like Scale might be the right answer here.
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Bernardo
3 months ago
Looks like the Scale was adjusted here.
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Dong
4 months ago
Totally agree with Scale, it makes the most sense.
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Louvenia
4 months ago
I think it’s definitely the Map control!
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Veda
4 months ago
I think we adjusted the Baseline control for this kind of question, but I'm not entirely sure.
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Crissy
4 months ago
I've got a good feeling about this. Based on the changes I see, I think the answer is pretty clear. I'll mark my choice and move on to the next question.
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Lajuana
5 months ago
I'm not totally sure about this one. I'll need to take a closer look at the color bars and think through the possible adjustments that could have been made.
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Wilburn
5 months ago
Okay, I see the difference between the two color bars. I think I know which control was adjusted, but I want to double-check my reasoning before answering.
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Lucy
5 months ago
Hmm, this looks like a tricky one. I'll need to carefully compare the two color bars to figure out which control was adjusted.
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Dianne
2 years ago
This is a tricky one, but I'm going with C) Map. Remapping the color values has to be the way they made that transformation.
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Doug
2 years ago
Maybe it's B) Scale, adjusting the scale could have done it.
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Yvonne
2 years ago
I agree with you, C) Map seems like the right choice.
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Reyes
2 years ago
I'm leaning towards D) Invert.
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Jina
2 years ago
I think it might be A) Baseline.
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Edelmira
2 years ago
I agree with Ozell, the colors seem inverted to me as well.
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Refugia
2 years ago
D) Invert seems like the right answer here. Flipping the colors around is the only way I can see to get from A to B.
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Tegan
2 years ago
Hmm, that's an interesting point. I still think it's Scale.
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Sang
2 years 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
2 years ago
I disagree, I believe it's B) Scale.
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Ma
2 years ago
I think it's A) Baseline.
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Ozell
2 years ago
I believe it was Invert because of the contrast in colors.
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Tegan
2 years ago
I think the color control adjusted was Scale.
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