Radiation 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 · Radiation physics

Sample item

Which modality avoids ionizing radiation and uses magnetic fields?

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

The answer and the reasoning

D. Magnetic resonance imaging

Magnetic resonance imaging uses strong magnetic fields and radiofrequency pulses rather than ionizing radiation to create detailed soft-tissue images.

Option by option

  • A. Plain radiography

    Plain radiography uses X-rays.

  • B. Computed tomography

    CT uses multiple X-ray projections.

  • C. Fluoroscopy

    Fluoroscopy uses continuous or pulsed X-rays.

  • D. Magnetic resonance imaging (correct)

    Correct: MRI uses magnetic fields and radiofrequency pulses.

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 D, Magnetic resonance imaging. Magnetic resonance imaging uses strong magnetic fields and radiofrequency pulses rather than ionizing radiation to create detailed soft-tissue images.

Why is "Plain radiography" not the answer?

Plain radiography uses X-rays.

Why is "Computed tomography" not the answer?

CT uses multiple X-ray projections.

Why is "Fluoroscopy" not the answer?

Fluoroscopy uses continuous or pulsed X-rays.

What concept does this question test?

It tests Radiation physics in Radiology. The correct option holds because: Correct: MRI uses magnetic fields and radiofrequency pulses.

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 Radiation 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.