[ RadSafe ] Re: In-vivo Cs-137

[Michael Bohan]

Hello RadSafer's and Brian,

You might be confusing Cesium-137 with Cesium-131 seeds which are now  
being used for permanent implants.  However, with a 10 day half life  
and a primary photopeak of 30 keV, you wouldn't mistake it for Cs-137.

http://www.cesium131.com/

Regards,

Mike Bohan, RSO
Yale-New Haven Hospital
Radiological Physics
20 York St. - WWW 204
New Haven, CT 06510
Tele: (203) 688-2950
Fax: (203) 688-8682
Email: mike.bohan at yale.edu

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