Nuclear medicine: myocardial perfusion: 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 · Nuclear medicine: myocardial perfusion

Sample item

In a myocardial perfusion scan, an area shows reduced tracer uptake on stress images that normalises at rest. What is this finding called?

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

The answer and the reasoning

C. Reversible defect (ischaemia)

A stress-induced perfusion defect that fills in at rest indicates inducible ischaemia in viable myocardium. A fixed defect indicates scar. Agents include Tc-99m sestamibi and thallium-201.

Option by option

  • A. Normal scan

    A normal scan has uniform uptake.

  • B. Fixed defect (infarct)

    A fixed defect is present on both sets of images.

  • C. Reversible defect (ischaemia) (correct)

    Correct. Defect on stress that normalises at rest indicates ischaemia.

  • D. Artefact only

    Artefacts must be considered, but this pattern is not explained by them.

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, Reversible defect (ischaemia). A stress-induced perfusion defect that fills in at rest indicates inducible ischaemia in viable myocardium.

Why is "Normal scan" not the answer?

A normal scan has uniform uptake.

Why is "Fixed defect (infarct)" not the answer?

A fixed defect is present on both sets of images.

Why is "Artefact only" not the answer?

Artefacts must be considered, but this pattern is not explained by them.

What concept does this question test?

It tests Nuclear medicine: myocardial perfusion in Radiology. A fixed defect indicates scar. Agents include Tc-99m sestamibi and thallium-201.

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 Nuclear medicine: myocardial perfusion?

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.