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ARDMS Exam SPI Topic 4 Question 6 Discussion

Actual exam question for ARDMS's Sonography Principles and Instrumentation exam
Question #: 6
Topic #: 4
[All Sonography Principles and Instrumentation Questions]

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

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Suggested Answer: A

The aperture of a transducer is the active area that emits and receives the ultrasound waves. In a linear array transducer, increasing the aperture (using more elements for transmission and reception) results in a deeper focus because the beam is more tightly focused over a longer distance. This improves lateral resolution at greater depths, as the ultrasound beam maintains a narrower width for a longer distance. It allows for better imaging of deeper structures without sacrificing resolution.


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

by Jeff at Jun 03, 2024, 01:35 AM

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Terrilyn
2 months ago
Wait, is this a trick question? I mean, who even uses a linear array transducer these days? Anyway, I'll go with A. Deeper focus, because that's just classic transducer stuff, you know?
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Daniela
2 months ago
User 2
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Serina
2 months ago
User 1
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Floyd
3 months ago
Hold up, are we talking about the aperture or the aperture size? This question is a bit tricky, but I'm gonna go with D. Decreased temporal resolution, just to be safe.
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Bulah
2 months ago
I agree with you, let's go with D) Decreased temporal resolution.
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Rosita
2 months ago
I'm not sure, but I'll go with B) Improved axial resolution.
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Alise
2 months ago
I think it's actually A) Deeper focus.
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Isreal
3 months ago
I agree with Leigha. A larger aperture allows for more focused beams, leading to deeper focus.
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Leigha
3 months ago
I think an increased aperture in a linear array transducer would result in deeper focus.
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Sheron
3 months ago
Hmm, I'm not so sure about that. Wouldn't an increased aperture lead to better axial resolution? I'm leaning towards B here.
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Karl
3 months ago
Ooh, I think the answer is C. Shorter near-field length, baby! That's the one that makes the most sense to me.
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Casandra
2 months ago
No, I'm pretty sure it's B. Improved axial resolution is the correct effect of an increased aperture in a linear array transducer.
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Sherell
2 months ago
I think the answer is actually A. Deeper focus is the effect of an increased aperture in a linear array transducer.
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Teddy
2 months ago
User 2: I believe it's C. Shorter near-field length.
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Verda
3 months ago
Actually, it's C. Shorter near-field length.
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Paulene
3 months ago
User 1: I think the answer is A. Deeper focus.
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Arminda
3 months ago
No, I believe it's B. Improved axial resolution.
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Lashaunda
3 months ago
I think the answer is A. Deeper focus.
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