Ultrasound physics: practice question

A Radiology question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Radiology · Ultrasound physics

Sample item

What causes posterior acoustic shadowing?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

C. Calcification or stone

This item reviews Ultrasound physics; Calcification or stone is the best answer because it directly matches the imaging or dental finding described.

Option by option

  • A. Simple fluid

    Simple fluid does not fit the stated pattern.

  • B. Airless liver

    Airless liver is plausible but not the single best answer.

  • C. Calcification or stone (correct)

    Correct. Calcification or stone fits the key clinical or imaging feature.

  • D. Normal muscle

    Normal muscle is not supported by the scenario.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

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Questions about this Radiology question

What is the answer to this Radiology question?

The best answer is C, Calcification or stone. This item reviews Ultrasound physics; Calcification or stone is the best answer because it directly matches the imaging or dental finding described.

Why is "Simple fluid" not the answer?

Simple fluid does not fit the stated pattern.

Why is "Airless liver" not the answer?

Airless liver is plausible but not the single best answer.

Why is "Normal muscle" not the answer?

Normal muscle is not supported by the scenario.

What concept does this question test?

It tests Ultrasound physics in Radiology. The correct option holds because: Correct. Calcification or stone fits the key clinical or imaging feature.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Ultrasound physics?

Learn signs with the image, and the disease they point to. Then use the flashcards and the other Radiology questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.