Re: Need Info on Dose due to Medical Uptake Study

[Robert Yoss <ryoss@post.its.mcw.edu>]

In the old days we used Tc-99m MAA for perfusion ling scans.  EDE 4.7 E-2
rem/mCi.  Lung dose 2.5E-1 rad/mCi.
Ref NUREG/CR-6345

B. Yoss
ryoss@mcw.edu

Chris Alston wrote:

> For Xe-133, it really depends on the rebreathing time. Assuming ten (10)
> minutes (which I think is kind of long, though I eagerly anticipate
> correction on this point), the EDE is 4 mrem/mCi, and the lung dose is 4
> mrad/mCi. Assuming that the Tc-99m was as DTPA, the EDE would have been 22
> mrem/mCi and the lungs would have received 53 mrad/mCi (cf. NUREG/CR-6345).
>
> chris a.
>
> At 12:04  04/02/99 -0600, you wrote:
> >Hi All,
> >
> >One of our workers told me he received a lung scan yesterday.  He says he
> >was given approximately 12 mCi of Xe-133 and 4 mCi of Tc-99m.  I know for
> >these types of uptakes the effective half-lives are quite short.  Anybody
> >out there know what the approximate dose is to the lung and the total body?
> >
> >Thanks
> >
> >Linda
> >
> >
> >Linda M. Sewell, CHP
> >Diablo Canyon Power Plant
> >PO Box 56
> >Avila Beach,  CA  93424
> >(805) 545-4315 (voice)
> >(805) 545-2618 (fax)
> >mailto:lms1@pge.com
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