Re: Need Info on Dose due to Medical Uptake Study

[Chris Alston <alstonc@odrge.odr.georgetown.edu>]

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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