51. The radioactive isotope of potassium-24, with half-life of 12 hours, is being used in the localization of brain tumours. A patient is given a dose containing 96 µCi of potassium-24. After 2 days of ingestion of potassium-24, the activity from the brain region is monitored and found to be 3 µCi. What was the percentage of the ingested potassium-24 that was concentrated in the brain region at the end of the 2-day period? A. 3.13 % B. 25 % C. 50 % D. 75 %
51. The radioactive isotope of potassium-24, with half-life of 12 hours, is being used in the localization of brain tumours. A patient is given a dose containing 96 µCi of potassium-24. After 2 days of ingestion of potassium-24, the activity from the brain region is monitored and found to be 3 µCi. What was the percentage of the ingested potassium-24 that was concentrated in the brain region at the end of the 2-day period? A. 3.13 % B. 25 % C. 50 % D. 75 %
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Transcribed Image Text:51. The radioactive isotope of potassium-24, with half-life of 12 hours, is being used in the localization of
brain tumours. A patient is given a dose containing 96 µCi of potassium-24. After 2 days of ingestion of
potassium-24, the activity from the brain region is monitored and found to be 3 µCi.
What was the percentage of the ingested potassium-24 that was concentrated in the brain region at the
end of the 2-day period?
A. 3.13 % B. 25 % C. 50 % D. 75 %
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