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 FLAIR MRI useful in periventricular brain lesions?

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

The answer and the reasoning

A. It suppresses bright cerebrospinal fluid

FLAIR suppresses free CSF signal, making oedema, demyelination, and other lesions near ventricles easier to detect against a dark CSF background.

Option by option

  • A. It suppresses bright cerebrospinal fluid (correct)

    Correct: dark CSF improves lesion conspicuity.

  • B. It measures arterial flow velocity

    Flow velocity needs phase-contrast methods.

  • C. It removes all fat signal

    Fat suppression is a separate technique.

  • D. It replaces diffusion imaging

    Diffusion answers a different acute question.

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 A, It suppresses bright cerebrospinal fluid. FLAIR suppresses free CSF signal, making oedema, demyelination, and other lesions near ventricles easier to detect against a dark CSF background.

Why is "It measures arterial flow velocity" not the answer?

Flow velocity needs phase-contrast methods.

Why is "It removes all fat signal" not the answer?

Fat suppression is a separate technique.

Why is "It replaces diffusion imaging" not the answer?

Diffusion answers a different acute question.

What concept does this question test?

It tests MRI physics in Radiology. The correct option holds because: Correct: dark CSF improves lesion conspicuity.

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.