[ RadSafe ] protraction enhancement effect

[Emmanuel.Egger at babs.admin.ch]

Mmhh, this is exactly the contrary of the basic knowledge applied in radiation oncology, where you prefer to give smaller doses over a longer time to allow for healthy tissue surrounding the tumor to repair its DNA damage.
This paper should be really read with great care!

Dr. Emmanuel Egger
Medical Physicist

-----Ursprüngliche Nachricht-----
Von: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] Im Auftrag von blreider at aol.com
Gesendet: Mittwoch, 1. September 2010 00:05
An: radsafe at health.phys.iit.edu
Betreff: Re: [ RadSafe ] protraction enhancement effect


"for equal total dose, a greater risk is incurred by those whose total dose is accumulated at a lower rate over a longer duration than at a higher rate over a shorter duration."

http://www3.cancer.gov/intra/dce-old/pdfs/reumid.pdf
 
Barbara Reider, CHP




http://www3.cancer.gov/intra/dce-old/pdfs/reumid.pdf
 
Barbara Reider, CHP






-----Original Message-----
From: Brennan, Mike (DOH) (DOH) <Mike.Brennan at DOH.WA.GOV>
To: The International Radiation Protection (Health Physics) MailingList <radsafe at health.phys.iit.edu>
Sent: Tue, Aug 31, 2010 2:28 pm
Subject: [ RadSafe ] protraction enhancement effect


Has anyone heard of "protraction enhancement effect", apparently also called 
inverse exposure-rate effect"?  I ran across it in an ICRP document, and I just 
ant to see if other, more knowledgeable people think it means what I think it 
eans. 
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