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Re: Pet facility and F-18



> Date:          Tue, 3 Nov 1998 12:21:27 -0600 (CST)
> Reply-to:      radsafe@romulus.ehs.uiuc.edu
> From:          Sim Shanks <shankss@odrge.odr.georgetown.edu>
> To:            Multiple recipients of list <radsafe@romulus.ehs.uiuc.edu>
> Subject:       Pet facility and F-18

> We are in the process of installing a PET scanner.  At this time the only
> isotope to be used is F-18.  The average doses will be 5 to 6 mCi.  5
> patients / day.
> 
> I am seeking shielding advice.  My calculations for most of the room (13 x
> 20 feet) require 1/4 inch lead shielding.  However, I have heard that some
> facilities have used as much as 1/2 inch of lead.  
> 
> What am I missing?  Please send responses to me at my e-mail address below.
> 
> Thank you in advance.
> 
> ----------------------------------------------------------------------------
> --------
> Sim Shanks, RSO		        		shankss@odrge.odr.georgetown.edu
> Georgetown University					(202) 687-4712
> Office of Environmental Health and Safety	fax 	(202) 687-5046
> 3900 Reservoir Road,  N.W.
> Washington DC  20007
> 
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> The RADSAFE Frequently Asked Questions list, archives and subscription
> information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html
>
What dose rates do you plan to achieve at the exterior walls of the 
PET scanning room?  That may explain the difference in lead 
thickness. 
<><><><><><><><><><><><><><><><><>            
<>    Charles R. (Russ) Meyer                  <>
<> Email:charles.meyer@tdh.state.tx.us 
<>     Phone:(512)834-6688                       <>
<>        Fax:(512)834-6654                        <>
<><><><><><><><><><><><><><><><><>
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The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html