Radioactive decay, half-life and uses

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12
Question 1
Hard

Figure 1 shows a schematic representation of a Time-of-Flight Positron Emission Tomography (TOF-PET) scan. A patient has been administered a radiotracer containing oxygen-15, which accumulates in a highly metabolic region of brain tissue.

Figure 1: Schematic of a TOF-PET scan showing an off-centre annihilation event and two opposing detectors, A and B.

Explain how the production and subsequent detection of the radiation shown in Figure 1 is used to determine the precise location of this metabolic site.

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Radioactive decay, half-life and uses Questions

  1. GCSE
  2. /Physics
  3. /Radioactive decay, half-life and uses