[ RadSafe ] xkcd: Relative Radiation Dose chart

[Howard]

The ZEP point, where dose of gamma or x ray does more harm than good, is about 250 mSv, according to Luckey in his well referenced book, Radiation Hormesis.

Howard Long

On Mar 21, 2011, at 1:52 PM, Sandra Matzkin <matzkin at invap.com.ar> wrote:

> Yes, I am aware that this 100 mSv value is considered to be a threshold above which the probability of cancer increases linearly with dose. I believe it is based on epidemiological studies carried out on some populations (Hiroshima and Mayak among them). However, I cannot find out how these studies were conducted or which other radiological exposed populations were analyzed.
> 
> It would be interesting to see both LNT and non-LNT supporters' take on this.
> 
> Sandra
> 
> At 05:28 PM 3/21/2011, you wrote:
>> Looking at his references,
>> http://j.mp/ek8QYy
>> 
>> I see the following statement at the MIT site:
>>   The 100 millisievert level is roughly the point at which health
>> effects from radiation
>>   become more likely. Below this it is statistically difficult to
>> connect radiation
>>   dose to cancer rates, but above this the relationship starts to
>> become apparent.
>> 
>> And at the NRC tritium page:
>>   Although high doses and high dose rates may cause cancer in humans
>> and genetic abnormalities
>>   in an embryo or fetus, public health data have not established the
>> occurrence of these health
>>   risks following exposure to low doses and low dose rates -  below
>> about 10,000 millirem (mrem).
>> 
>> 
>> ---
>> Cary Renquist
>> cary.renquist at ezag.com
>> 
>> -----Original Message-----
>> From: radsafe-bounces at health.phys.iit.edu
>> [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Sandra Matzkin
>> Sent: Monday, 21 March 2011 11:38
>> To: The International Radiation Protection (Health Physics) Mailing List
>> Subject: Re: [ RadSafe ] xkcd: Relative Radiation Dose chart
>> 
>> About the assertion "Lowest one-year dose clearly linked to increased
>> cancer risk" (100 mSv), can anyone comment or provide references on
>> how this link was established?
>> 
>> Regards
>> 
>> Sandra Matzkin
>> Radiation Transport
>> INVAP SE
>> Bariloche
>> Argentina
>> 
>> 
>> At 02:30 PM 3/21/2011, Yoss, Robert wrote:
>> >For a chuckle note the last lines at the bottom.
>> >
>> >Rob Yoss
>> >FMLH/MCW
>> >
>> >-----Original Message-----
>> >From: radsafe-bounces at health.phys.iit.edu
>> >[mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Cary Renquist
>> >Sent: Monday, March 21, 2011 11:45 AM
>> >To: The International Radiation Protection (Health Physics) MailingList
>> >Subject: [ RadSafe ] xkcd: Relative Radiation Dose chart
>> >
>> >Surprised that nobody has pointed this out yet...
>> >
>> >http://j.mp/fklO6J
>> >
>> >
>> >
>> >
>> >Best regards,
>> >Cary
>> >
>> >---
>> >Cary Renquist
>> >crenquist at isotopeproducts.com or cary.renquist at ezag.com
>> >
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