Re: Sm-153

[Kerembaev@cs.com]

Louis,

How much is "usually" left after a "typical" administration?
As you know, that 10 CFR part 20 has an exempt quantity for Eu-154.
Is amount of "left over" Eu-154 above that value? I do not have any Regs with 
me.
(May be I should?)
Or the regulators do not want to see ANY delectable activity of Eu-154 to be 
disposed.

 >> 
In fact, the actual
measured values range from 0.06 to 0.08 microcuries of Eu-154 per
millicurie of Sm-153.
>>

Emil.

In a message dated 1/28/00 3:24:08 Pacific Standard Time, 
Louis_Hagler@BERLEX.COM writes:

<< appropriate for Sm-153, with a half-life of nearly 2 days.  However,
 because of its long half-life, it will be possible to detect, well beyond
 20 days, the microcurie amounts of Eu-154 that remain in the vial after
 administration of Quadramet.
  >>
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