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Radiology · Radiation safety
Sample itemWhat is the rationale for shielding and collimation in X-ray imaging?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
B. Limit unnecessary exposure
The essential Radiation safety principle supports Limit unnecessary exposure; it is the option that most directly explains the image characteristic, safe modality choice, or oral-health finding described.
Option by option
A. Increase magnetic strength
Increase magnetic strength does not fit the stated radiation safety feature.
B. Limit unnecessary exposure (correct)
Correct. Limit unnecessary exposure matches the decisive detail in this sample.
C. Replace consent
Replace consent is unsupported by the imaging or dental information provided.
D. Improve sound transmission
Improve sound transmission can be useful elsewhere but is not the best answer here.
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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