[ RadSafe ] Tc-99m Sestimibi Biological half life (oreffectivehalf life) and TEDE/mCi

[Sewell, Linda]

 All,

I missed the original posting, but if your interest is regarding dealing with folks who have had Tc-99m studies, the 6 hour half life is a bit of a red herring.  There always seems to be a small amount of Mo-99 with a 66 hour half life as a contaminant.  That causes gamma sensing portal monitors to alarm for several days following a Tc-99m study.  Regarding the TEDE dose per mCi, Mike Stabin's RADAR website (http://www.doseinfo-radar.com/RADARDoseRiskCalc.html) gives all sorts of useful information like that including the linked dose calculation tool.

Happy Friday All,

Linda

Linda Sewell, CHP
Dosimetry Supervisor
Diablo Canyon Power Plant
MS 119/1/122
PO Box 56
Avila Beach, CA 93424
805.545.4315 (voice)
805.545.2618 (fax)
mailto:lms1 at pge.com


-----Original Message-----
From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl] On Behalf Of alstonchris at netscape.net
Sent: Friday, May 20, 2005 11:34 AM
To: radsafe at radlab.nl
Subject: Re: [ RadSafe ] Tc-99m Sestimibi Biological half life (oreffectivehalf life) and TEDE/mCi

Folks

I don't remember the EDE, but the physical half-life (6 h) should be controlling, shouldn't it?

Cheers
cja


John Jacobus <crispy_bird at yahoo.com> wrote:

>There is a list of Radiopharmaceutical Package Inserts
>that have this information at
>http://www.nuclearonline.org/PIbygeneric2.htm
>
>Sesteimibi for cardiac use is at
>http://www.nuclearonline.org/PI/Cardiolite.pdf
>
>
>--- Mark Hulke <mhulke at energxhanford.com> wrote:
>> I would like to know the biological half life and/or
>> effective half life
>> of Tc-99m sestimibi and the TEDE per mCi.
>> 
>>  
>> 
>> Sincerely
>> 
>> Mark Hulke
>> 
>> mhulke at energxhanford.com
>> 
>> Radiological Technician Training Instructor
>> 
>> Hanford Washington
>> 
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>
>+++++++++++++++++++
>"Embarrassed, obscure and feeble sentences are generally, if not always, the result of embarrassed, obscure and feeble thought."
>Hugh Blair, 1783
>
>-- John
>John Jacobus, MS
>Certified Health Physicist
>e-mail:  crispy_bird at yahoo.com
>
>
>        
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