[ RadSafe ] In-vivo Cs-137

[Kristof Baete (NUCLEAIRE GENEESKUNDE)]

Dear Cindy,

Cs-137 is used in some PET systems to perform transmission scanning, it
is not administered to the patient!

Regards,
Kristof

Kristof Baete, PhD
Medical Radiation Physicist
Nuclear Medicine

kristof.baete at uzleuven.be
tel. +32 16 34 91 04
tel. secr. +32 16 34 37 15

UZ Leuven | campus Gasthuisberg | Herestraat 49 | B - 3000 Leuven |
www.uzleuven.be


-----Oorspronkelijk bericht-----
Van: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl] Namens
Cindy Bloom
Verzonden: vrijdag 23 januari 2009 18:22
Aan: Brian Rees; radsafe at radlab.nl
Onderwerp: Re: [ RadSafe ] In-vivo Cs-137

Brian,

I haven't heard of unsealed Cs-137 being used purposefully as a medical 
treatment (a very small amount of Cs-137 contamination might be on the 
surface of a sealed source).  I wonder if Cs-137 might be a contaminant
in 
a radiopharmaceutical.

This site, 
http://www.radiochemistry.org/nuclearmedicine/frames/medical_radioisotop
es/, 
states that Cs-137 is used in PET imaging.  Interesting.

Cindy

At 08:49 PM 1/21/2009 -0700, Brian Rees wrote:
>Is anyone aware of a medical treatment that would leave Cs-137 in an 
>out-patient?  If so, how much and for how long?
>
>I KNOW that it's typically used medically as an external source, or 
>in-patient brachytherapy.  I just don't know of any conceivable reason
for 
>a person to have it in-vivo.
>
>Thanks,
>Brian Rees
>
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