Paediatric imaging: 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 · Paediatric imaging

Sample item

Why is ultrasound preferred for infant hip dysplasia assessment?

AIt visualizes the unossified femoral head without radiationBIt gives a higher radiation dose than CTCIt cannot show the acetabulumDIt is used only after skeletal maturity

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

The answer and the reasoning

A. It visualizes the unossified femoral head without radiation

Ultrasound images cartilaginous hip structures before femoral head ossification and avoids ionizing radiation in infants.

Option by option

A. It visualizes the unossified femoral head without radiation (correct)
Correct: it is suited to immature cartilaginous anatomy.
B. It gives a higher radiation dose than CT
Ultrasound does not use ionizing radiation.
C. It cannot show the acetabulum
It evaluates both femoral head and acetabular relationship.
D. It is used only after skeletal maturity
It is especially useful before skeletal maturity.

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.

Questions about this Radiology question

What is the answer to this Radiology question?

The best answer is A, It visualizes the unossified femoral head without radiation. Ultrasound images cartilaginous hip structures before femoral head ossification and avoids ionizing radiation in infants.

Why is "It gives a higher radiation dose than CT" not the answer?

Ultrasound does not use ionizing radiation.

Why is "It cannot show the acetabulum" not the answer?

It evaluates both femoral head and acetabular relationship.

Why is "It is used only after skeletal maturity" not the answer?

It is especially useful before skeletal maturity.

What concept does this question test?

It tests Paediatric imaging in Radiology. The correct option holds because: Correct: it is suited to immature cartilaginous anatomy.

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 Paediatric imaging?

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.