[ RadSafe ] Annual dose from Nature/Background/Man-made sources

[Jose Julio Rozental]

This is not from now. In UK, was informed in 2005, look at 
Ionising Radiation Exposure of the UK Population 2005 Review
http://www.hpa.org.uk/hpa/news/articles/press_releases/2005/050524_ionising_review.htm

The Medical Journal of Australia, comment the subject - look at
Medical radiation and the risk of cancer
http://www.mja.com.au/public/issues/180_11_070604/dic10124_fm.html
........................................
The total population dose of radiation from medical diagnostic procedures is 
increasing worldwide, mainly due to the increase in CT scanning. CT entails 
the use of higher radiation doses than other common radiological 
procedures.3 In Australia, Medicare data indicate that CT use has increased 
140% over the decade 1992-2002. The reason for the increased use of CT is 
that it is now able to provide much better and more valuable clinical 
information, and to do so more easily, than in the past. As the technology 
has improved, the image quality has improved and scanning times have been 
reduced to just a few seconds. CT can now image fine detail, even in mobile 
organs, and hence the indications for its use have expanded.
..........................
Jose Julio Rozental
joseroze at netvision.net.il
Israel

----- Original Message ----- 
From: "Johnston, Thomas" <Tom_Johnston at nymc.edu>
To: <radsafe at radlab.nl>; "Academic-Medical Radiation Safety Officers 
listserve" <amrso at mailman.mcw.edu>
Sent: Tuesday, July 31, 2007 8:08 PM
Subject: [ RadSafe ] Annual dose from Nature/Background/Man-made sources


I recently read a paper regarding the average doses from medical
diagnostic procedures has increased, rather than decreased. This is
primarily due to multi-slice CT imaging techniques. (Sorry, but I cannot
recall the journal!)



Question, will there be a change to the average annual dose of 360/year
from Nature/Background/Man-made sources that we have been using for some
time? (Unless, of course, you happen to live in Denver, etc.) If so,
when will the change take effect? I know I should also pose this
question to the "Ask the Experts" on www.hps.com <http://www.hps.com/> .



Does anyone have any insight on this matter? Yours thoughts and comments
are welcome.



Thomas P. Johnston

Radiation Safety Officer

New York Medical College

Valhalla, NY 10595

914-594-4448 office

914-594-3665 fax

914-557-5950 mobile

tom_johnston at nymc.edu



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