Interventional radiology: modalities for guided procedures: 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 · Interventional radiology: modalities for guided procedures

Sample item

A radiologist plans a percutaneous biopsy of a peripheral lung nodule and wishes to minimise injury to adjacent structures. Which guidance is most commonly used?

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

The answer and the reasoning

B. CT guidance

CT guidance allows precise needle placement for lung, mediastinal and deep abdominal lesions with real-time confirmation. Ultrasound guidance suits superficial or pleural-based lesions and avoids radiation. The commonest complication of lung biopsy is pneumothorax.

Option by option

  • A. Radionuclide bone scan

    A bone scan provides no real-time guidance.

  • B. CT guidance (correct)

    Correct. CT is the commonest guidance for lung nodule biopsy.

  • C. Barium swallow

    Barium swallow does not guide biopsies.

  • D. Plain radiograph guidance

    Plain films cannot reliably show needle position in three dimensions.

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 B, CT guidance. CT guidance allows precise needle placement for lung, mediastinal and deep abdominal lesions with real-time confirmation.

Why is "Radionuclide bone scan" not the answer?

A bone scan provides no real-time guidance.

Why is "Barium swallow" not the answer?

Barium swallow does not guide biopsies.

Why is "Plain radiograph guidance" not the answer?

Plain films cannot reliably show needle position in three dimensions.

What concept does this question test?

It tests Interventional radiology: modalities for guided procedures in Radiology. Ultrasound guidance suits superficial or pleural-based lesions and avoids radiation. The commonest complication of lung biopsy is pneumothorax.

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 Interventional radiology: modalities for guided procedures?

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.