[ RadSafe ] Re: radsafe Digest, Vol 181, Issue 3

[neildm at id.doe.gov]

All of the tests I have been aware of (including mine) have used
thallium. 

Of course, the difference in half-life may have something to do with
that ... :-) 

Dave Neil

-----Original Message-----
From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl] On
Behalf Of Ed Stroud
Sent: Monday, January 26, 2009 7:09 AM
To: radsafe at radlab.nl; al at solidsurfacealliance.org
Subject: [ RadSafe ] Re: radsafe Digest, Vol 181, Issue 3

Most cardiac stress tests use Tc-99m with a half-life of 6 hours.
However, some cardiologists prefer to use a combination of Tc-99m and
Tl-201. Thallium has a half-life of 73 hours.
-Ed Stroud

>>> <al at solidsurfacealliance.org> 1/23/2009 5:30 PM >>>


Hi All,
 
I friend of mine had a stress test on Tuesday, heart patient, had some
stents installed a few weeks back.   About a foot away from his chest,
my PM 1703 Gamma Scintillator was reading over 2,500 uR/hr.   This was
Saturday night, at least four full days after the procedure.
 
Is this unusual?  I thought most of those medical isotopes had very
short half lives.
 
Thanks,
 
Al
 
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