Neuroimaging: 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 · Neuroimaging

Sample item

What is the first investigation of choice in suspected acute subarachnoid haemorrhage?

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

The answer and the reasoning

C. Non-contrast CT of the head

Non-contrast CT is highly sensitive for blood in the first hours. If CT is negative but suspicion remains, lumbar puncture looking for xanthochromia follows. CT or catheter angiography then locates the aneurysm.

Option by option

  • A. Cerebral angiography

    Angiography is used after the bleed is confirmed.

  • B. MRI of the brain

    MRI is not the first-line test in an emergency.

  • C. Non-contrast CT of the head (correct)

    Correct.

  • D. Lumbar puncture

    Lumbar puncture is done after a negative CT.

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, Non-contrast CT of the head. Non-contrast CT is highly sensitive for blood in the first hours.

Why is "Cerebral angiography" not the answer?

Angiography is used after the bleed is confirmed.

Why is "MRI of the brain" not the answer?

MRI is not the first-line test in an emergency.

Why is "Lumbar puncture" not the answer?

Lumbar puncture is done after a negative CT.

What concept does this question test?

It tests Neuroimaging in Radiology. If CT is negative but suspicion remains, lumbar puncture looking for xanthochromia follows. CT or catheter angiography then locates the aneurysm.

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 Neuroimaging?

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.