[ RadSafe ] Na 22 PET question

John Jacobus crispy_bird at yahoo.com
Fri Apr 28 07:23:48 CDT 2006

You set your discriminator to the 0.511 Mev energy
annihilation photons.  See page 66 at

--- Gary Isenhower <garyi at trinityphysics.com> wrote:

> How can Na 22 be used to find efficiency for wipe
> counters at PET 
> facilities, if the Na 22 has that extra 1.2 Mev
> photon  with every 
> decay?  Doesn't that mess up the efficiency or do
> the counters correct 
> for that somehow?
> Thanks for any help,
> Gary Isenhower, M.S.
> 713.690.3020
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"A scientist's aim in a discussion with his colleagues is not to persuade, but to clarify." 
Leo Szilard
-- John
John Jacobus, MS
Certified Health Physicist
e-mail:  crispy_bird at yahoo.com

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