MRI 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 · MRI physics

Sample item

Why is gadolinium contrast used in many MRI examinations?

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

The answer and the reasoning

D. It highlights regions with altered vascularity or blood-brain barrier disruption

Gadolinium shortens relaxation times and can enhance lesions with abnormal vascularity or blood-brain barrier disruption when clinically appropriate.

Option by option

  • A. It measures ionizing radiation dose

    MRI uses no ionizing radiation to measure.

  • B. It replaces all non-contrast MRI sequences

    Non-contrast sequences remain essential in many MRI protocols.

  • C. It makes cortical bone appear completely black

    Bone signal is not the purpose of gadolinium.

  • D. It highlights regions with altered vascularity or blood-brain barrier disruption (correct)

    Correct: enhancement reflects contrast distribution in abnormal tissue.

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.

More Radiology questions

Questions about this Radiology question

What is the answer to this Radiology question?

The best answer is D, It highlights regions with altered vascularity or blood-brain barrier disruption. Gadolinium shortens relaxation times and can enhance lesions with abnormal vascularity or blood-brain barrier disruption when clinically appropriate.

Why is "It measures ionizing radiation dose" not the answer?

MRI uses no ionizing radiation to measure.

Why is "It replaces all non-contrast MRI sequences" not the answer?

Non-contrast sequences remain essential in many MRI protocols.

Why is "It makes cortical bone appear completely black" not the answer?

Bone signal is not the purpose of gadolinium.

What concept does this question test?

It tests MRI physics in Radiology. The correct option holds because: Correct: enhancement reflects contrast distribution in abnormal tissue.

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 MRI 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.