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Radionuclide imaging and therapy (A-level only)

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Question 11

A patient is administered a mixture of two radioactive tracers, Tracer P and Tracer Q, for a diagnostic scan.

At the time of administration, the activity of Tracer P is 320 MBq320\text{ MBq}320 MBq and the activity of Tracer Q is 512 MBq512\text{ MBq}512 MBq.

Tracer P has a half-life of 6 hours6\text{ hours}6 hours and Tracer Q has a half-life of 8 hours8\text{ hours}8 hours.

What is the total combined activity of Tracer P and Tracer Q remaining after 24 hours24\text{ hours}24 hours?

20 MBq20\text{ MBq}20 MBq

64 MBq64\text{ MBq}64 MBq

84 MBq84\text{ MBq}84 MBq

104 MBq104\text{ MBq}104 MBq

Radionuclide imaging and therapy (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Radionuclide imaging and therapy (A-level only)