[ RadSafe ] Article by Vincent Giuliano on "Radiation Hormesis" Dose limit???
parthasarathy k s
ksparth at yahoo.co.uk
Fri Feb 22 14:11:32 CST 2013
I also have the background of a regulator.I have asked the list several months ago to come out with a one page recommendation of a new kind.I argued that the recommendation should be brief and should clearly identify the dose limit. While I look at the recent correspondence I got some numbers; many ICRP enthusiasts may shudder to think of them.
Do we really need a threshold dose? Can we not make an acceptable risk formulation?. The threshold dose may vary from individual to individual for obvious reasons.If decisions are made on the basis of wider discussions with different stakeholders, it may be productive.
From: Mohan Doss <mohan.doss at fccc.edu>
To: radsafe at health.phys.iit.edu
Sent: Saturday, 23 February 2013, 0:42
Subject: Re: [ RadSafe ] Article by Vincent Giuliano on "Radiation Hormesis"
Hi Victor and All,
Since the regulatory agencies are influenced by international
advisory bodies in setting the policies, we should probably appeal to
these bodies to change their recommendations. The simpler the arguments
we present against the current officially recognized concepts, the
better the chance that the advisory bodies may consider changing their
recommendations. In this connection, you may be interested in the
Editorial entitled "The importance of adaptive response in cancer
prevention and therapy" that has been published in Medical Physics:
Med. Phys. 40, 030401 (2013). Below is the link to the journal website
from which you can view the link to the article, and download it. Though
the journal is subscription based, Editorials are free to access for
With best regards,
Mohan Doss, Ph.D., MCCPM
Associate Professor, Diagnostic Imaging,
Fox Chase Cancer Center, R427
333 Cottman Avenue,
Philadelphia, PA 19111-2497.
Phone: 215 214-1707
Fax: 215 728-4755
E-mail: Mohan.Doss at fccc.edu
On 1/29/2013 2:59 PM, Victor Anderson wrote:
> Good Morning,
> The evidence for hormesis is certainly there. I too believe that LNT is no
> longer a viable basis for radiation safety. Being an ex-regulator, for me
> the next big question is placing some numerical values on radiation safety
> standards. Given that X Gy of dose will not cause any harm, should that be
> the new radiation safety standard? This brings as least two questions to
> mind: 1) Given biological variability, what is a safe upper limit? and 2)
> How does the new standard work for different types of radiation, rates
> (gy/y, gy/hr?), mode of delivery? We also need to look at a new unit as the
> Sievert and REM were both pegged to probability of death by cancer. So, if
> say 1 cGy of gamma radiation has no risk of cancer, then the risk based dose
> is zero (0 cSv). Suppose there is a region where there is some protective
> benefit mixed with some chance of harm? A fine kettle of fish. The reason I
> ask is that the next step is to petition the NRC for a rule change. The
> bigger question is what kind of rule change? With this is mind, I would
> propose an an hoc committee to work on this problem. Any takers? If so,
> please e-mail me.
> Victor Anderson, CHP
> -----Original Message-----
> From: radsafe-bounces at health.phys.iit.edu
> [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Scott, Bobby
> Sent: Tuesday, January 29, 2013 11:10 AM
> To: The International Radiation Protection (Health Physics) MailingList
> Cc: Miller, Mark L; Jerry Cuttler; Dobrzynski Ludwik; Payne,Steven S.
> Subject: [ RadSafe ] Article by Vincent Giuliano on "Radiation Hormesis"
> Hi all,
> I came across an interesting 7 September 2012 article on the web by
> Vincent Giuliano titled "Radiation Hormesis." The link for the article
> I thought some of you may like to know about the article.
> Best wishes,
> B. R. Scott
> Senior Scientist
> Lovelace Respiratory Research Institute
> 2425 Ridgecrest Drive SE
> Albuquerque, NM 87108 USA
> Phone: 001-505-348-9470
> Fax: 001-505-348-8567
> E-mail: bscott at LRRI.org<mailto:bscott at LRRI.org>
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