Multiple choice

Positron Emission Tomography (PET) is one of the best methods for functional imaging because

  1. isotopes with long half-lives are used

  2. isotopes with short half-lives are used

  3. positrons are directly used in imaging

  4. isotopes of basic body elements are used for imaging
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

PET scans use radiotracers, which are isotopes of elements like carbon, nitrogen, or oxygen that are naturally found in the body. These tracers allow for the visualization of metabolic processes in living tissue.

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