Surprisingly High Cancer Risk from CT Scans

Isn’t it nice to know that the medicalGranted, scans give doctors and patients
profession caused 29,000 future cases of cancerinformation not easily attainable any other way. 
in 2007 from the CT scans it performed onHowever, with an obvious financial motivation to
patients (a great tool for future business).  Thinkperform scans the true need for them in many
twice before falling for a heart scan add you hearsituations is called into question – especially
on the radio, the risk for a woman getting cancerconsidering the emerging cancer risk.  I reported
from it is 1 in 270.  These are some of thetwo years ago that 20 million of these scans each
remarkable numbers coming from two newyear are unnecessary.  The cancer risk for
studies published Monday in the Archives ofchildren from CT scans is especially high, so
Internal Medicine.parents beware.
Keep in mind that health organizations need to useIn the first new study researchers sought to put
their expensive machines to justify having them. a number to the future cancer risk from these
In the U.S. alone over 70 million CT scans areCT scans – a number which turned out to be
performed a year.  The dose of radiation varies;29,000 cases for the amount of CT scans
though on average physicians are using four timesperformed in 2007.  This procedure is creating an
the recommended amount of radiation per scanastounding number of yearly future cancer
(apparently so they can get a better view). cases.  Whatever happened to the idea of first
Depending on who is performing the test anddoing no harm?
what part of the body is being tested, one CTIn the second study researchers found that
scan has the equivalent radiation ranging from 30radiation doses varied widely, there was no
– 442 chest x-rays, with 1 million of thesestandardization of testing in the country, and
scans per year at the highest end of this range. patients were in general being over-exposed to
Scans of the abdominal area and pelvis have theradiation.  In others words, doctors are being
highest amount of radiation, with brain scans,reckless and negligent in their use of CT scans
chest scans, and heart scans taking second. while causing all these cases of cancer. 
Individuals getting more than one scan to followIt amazes me that the practice of medicine is
up on a problem are at particular risk from repeatgetting a free pass in the current health care
exposure.debate.