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Oxygen-15 Is A β\beta + Emitter That Is Often Used in PET Scans

Question 10

Multiple Choice

Oxygen-15 is a β\beta + emitter that is often used in PET scans.It has a half-life of 122 seconds.Calculate how long it takes for the patient's initial activity to be reduced by a factor of 100.


A) 203 mins
B) 1.22 ×\times 104 mins
C) 13.5 mins
D) 8.13 mins
E) None of these is correct.

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