ARDMS Exam SPI Topic 2 Question 11 Discussion

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

Question #: 11
Topic #: 2

[All Sonography Principles and Instrumentation Questions]

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

ADeeper focus

BImproved axial resolution

CShorter near-field length

DDecreased temporal resolution

Show Suggested Answer

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 Malcolm at Aug 05, 2024, 01:38 PM

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Quinn

2 days ago

Increasing the aperture is like growing your aperture on a camera - more light, baby! Deeper focus all the way.

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Anglea

5 days ago

D? Decreased temporal resolution? What is this, a slow-motion ultrasound show? I'll pass on that one.

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Therese

7 days ago

Shorter near-field length? That's like saying I should order a smaller pizza - not happening! C is not the one.

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1 months ago

Ah, the classic aperture question! Deeper focus, for sure. I can almost feel the ultrasound waves penetrating deeper into the body.

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Ma

7 days ago

A) Deeper focus

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