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Oxygen-15 Is a β+ Emitter That Is Often Used in PET

Question 93

Multiple Choice

Oxygen-15 is a β+ 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 decay rate to be reduced by a factor of 100.


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

Correct Answer:

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