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RE: Sources in WTC



Considering the location (inside an office tower), chances are this (or any)

office may have been a free standing clinic or an outpatient clinic,

and most likely only used Tc-99m.  Typical studies performed would

probably include cardiac studies, bone and thyroid scans.



I suppose depending on where in the rubble the remains of the clinic ended up,

any overlying rubble would provide more than enough shielding and would have

decayed away by now.

There will probably be a Co-57 flood source around too, which will

likely be the only source left.



Just speculating,

Eugene





At 03:45 PM 09/17/2001 +0000, Bjorn Cedervall wrote:

>>I know of at least one nuclear medicine office in one of the WTC towers 

>>that collapsed.

>---

>OK - then I take one step back.

>Next question: Did they use isotopes (which ones? It sounds important to 

>sort this out - what kind of examinations or other practices were 

>performed?) in quantities of relevance for radiation protection (over all 

>context here)?

>If not, there may still be concern because there is always a risk that the 

>media gives it larger attention than it deserves.

>

>A sample that is smashed could probably give some few individuals either 

>an external dose or a dose due to inhalation.

>

>Bjorn Cedervall    bcradsafers@hotmail.com





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