[ RadSafe ] Re: radsafe Digest, Vol 181, Issue 3
estroud at smtpgate.dphe.state.co.us
Mon Jan 26 08:09:13 CST 2009
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.
>>> <al at solidsurfacealliance.org> 1/23/2009 5:30 PM >>>
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.
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