Gamma shaft of light camera please lend a hand?

when a radioactive substance is injected into the body, something else is injected with it. It guides the tracer to a certain part of the body.

What is the medial signature of the guider?
(I am not looking for radiopharmaceutical)
Answers:
There is no separate substance that gets taken up in specific tissues, to be followed later by the radioactive substance.

The radionuclide is covalently bound to other moieties that may be select by certain tissues ie glucose - effectively creating a new, single, radioactive molecule.
radiotracer maybe? Source(s): http://medical-dictionary.thefreediction…

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