Re: Contaminants in Medical Isotopes?

[Lew Helgeson <lewhelgeson@helge.com>]

Eric,

We have frequently seen very small amounts of Thallium-204 in whole body
counts of people following the administration of thallium-201 and 202 and
after these nuclides have decayed to non-detectable amounts. We have also
seen Mo-99 in people who have had Tc-99m administrations. We have never
documented this since we have no idea of the initial amounts of the
particular radionuclide that was administered.

Lew Helgeson

At 01:15 PM 5/11/2000 -0500, you wrote:
>Can someone point me to published material (Health Physics Journal for
>instance) that describes what I have heard in passing:  that medically
>administered radioisotopes (sometimes) have contaminants of other isotopes
>at small concentrations?   I'm looking specifically for published research
>papers on this, not anecdotal experiences.  Please forward any information
>to me directly at:
>
>Eric M. Goldin
>Southern California Edison
>(949) 368-7532
><goldinem@songs.sce.com>
>
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