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← ScienceIf a nuclear medicine technologist introduces a short-lived radioactive isotope into an unstable detector, which outcome is more probable?
A)Higher count rate and imaging artifact✓
B)Detector calibration shifts significantly afterwards
C)Source half-life mysteriously appears shorter
D)Gamma-ray absorption increases gradually nearby
💡 Explanation
The introduced isotope's activity adds to the detector's noise floor causing artifacting because random interactions overwhelm any calibration benefits; the resultant high count rate yields corrupted images, therefore the artifacts increase; rather than correction reducing shifts in signal.
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