Chest imaging: 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 · Chest imaging

Sample item

Why is a posteroanterior chest radiograph preferred over an anteroposterior portable view when feasible?

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

The answer and the reasoning

C. It reduces apparent cardiac magnification

In a PA chest radiograph the heart lies closer to the detector, reducing geometric magnification; AP portable films can make the cardiac silhouette appear artificially enlarged and should be interpreted in that context.

Option by option

  • A. It eliminates all motion artifact

    Motion can still occur during a PA chest radiograph.

  • B. It uses no radiation

    Plain radiography uses ionizing radiation.

  • C. It reduces apparent cardiac magnification (correct)

    Correct: PA positioning reduces magnification of the heart.

  • D. It always shows more lung nodules

    View selection does not guarantee detection of every lung nodule.

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, It reduces apparent cardiac magnification. In a PA chest radiograph the heart lies closer to the detector, reducing geometric magnification; AP portable films can make the cardiac silhouette appear artificially enlarged and should be interpreted in that context.

Why is "It eliminates all motion artifact" not the answer?

Motion can still occur during a PA chest radiograph.

Why is "It uses no radiation" not the answer?

Plain radiography uses ionizing radiation.

Why is "It always shows more lung nodules" not the answer?

View selection does not guarantee detection of every lung nodule.

What concept does this question test?

It tests Chest imaging in Radiology. The correct option holds because: Correct: PA positioning reduces magnification of the heart.

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 Chest imaging?

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.