Explanation:
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I believe the answer is: <span>positron emission tomography (PET)
To use PET scan, the medical professional need to inject the patient with radiotracer for imaging purposes.
</span><span>positron emission tomography (PET) is used to observe/analyze the metabolic process in our body as a form of diagnostic tools</span>
The similarities between Hamilton and Jefferson are not many as both men had very different ideas for the United States