Navigation Links
Hazards of CT scans overstated
Date:11/30/2007

College Park, MD (November 30, 2007) Concerns over possible radiation effects of CT scans detailed in a report yesterday in the New England Journal of Medicine should not scare people away from getting medically needed CT scans, as the scans play a critical role in saving the lives of thousands of people every day, according to an official with the American Association of Physicists in Medicine (AAPM).

In a statement issued Friday, Dr. John M. Boone, chairman of AAPMs science council, says that the science community remains divided over the radiation dose effects of CT scans and that the findings in the Journal article were based on flawed assumptions and were not conclusive. While agreeing with the Journal articles authors, Drs. David Brenner and Eric Hall, that CT scans should only be used judiciously and when medically necessary, Boone says CT experts in the AAPM feel that much of the message of this article may be misconstrued or misunderstood by the press or by the public who may not be experts in CT.

Brenner and Hall, in their article, said that while they save lives and speed diagnosis, the 62 million CT scans done in the United States each year may soon be responsible for 2 percent of all cancers. They further suggested that their back of the envelope estimate is that about a third of all CT scans are unnecessary.

Boone responds in his statement that the assumptions about the hazards of CT scan radiation exposure remain controversial, even among experts in radiation biology. The method of determining risk used in the article is derived from Japanese citizens exposed to large amounts of radiation during the atomic bomb attacks on Hiroshima and Nagasaki in World War II, and the extrapolation of those extremely high radiation exposure rates down to the low CT exposures remains very controversial, Boone says.

Another significant flaw in the article was the attempt to compare the Japanese bomb victims to patients receiving CT in the US in 2007, Boone says. The article did not correct for the many underlying confounding age dependent variables that differ between (the Japanese population) and older Americans, such as the incidence of obesity and diabetes.

Boone encourages patients who have had CT scans, or are slated for CT exams in the next few weeks, to discuss with their physicians not only the radiation risks of the CT examination, but the risks of not having the diagnostic information that CT provides.

While Boone notes that Brenner and Hall are esteemed scientists and respected experts in radiation risk . . . the conclusions of the Brenner article are based on statistics and many statistical assumptions (and not) on the actual observation of somebody dying from having a CT scan.


'/>"/>

Contact: Cecilia A. Hunter
cecilia@aapm.org
301-209-3381
National Institute of Standards and Technology (NIST)
Source:Eurekalert

Related medicine news :

1. Hazards of using crib bumper pads outweigh their benefits
2. European directive will halt use of MRI scans; cancer diagnosis and treatment will suffer
3. PET scans can accurately detect a breast tumors response to chemotherapy
4. High-tech CT scans: not a bad choice to test for clogged arteries
5. New Computerized Scans Effective for Spotting Clogged Arteries
6. PET scans useful for some cancer treatment, but how do patients fare?
7. PET Scans Can Spot Cervical Cancers Return
8. Post-treatment PET scans can reassure cervical cancer patients
9. CT scans to determine heart disease in the emergency room
10. Obesity Keeps Patients From Needed CT Scans After Surgery
11. PET Scans Could Boost Lung Cancer Diagnosis
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/31/2016)... PA (PRWEB) , ... May 31, 2016 , ... More ... Philadelphia, Hep B United Philadelphia, and the Prevent Cancer Foundation held an event on ... silent epidemic in the city of viral hepatitis, the leading cause of liver cancer. ...
(Date:5/31/2016)... ... May 31, 2016 , ... Splashtop Inc., the worldwide leader in ... Networks Co., the leading provider of secure mobile remote access solution for Japan ... leading CACHATTO remote access solution. Splashtop for CACHATTO will be available as ...
(Date:5/31/2016)... ... ... Twenty years ago it was revolutionary: enabling the people who hear distressing voices ... But this approach has proven transformative, both for people who hear voices and for ... is used around the world, but it still lags in the United States. , ...
(Date:5/31/2016)... ... May 31, 2016 , ... When ... he knew it was something that contractors should have at their disposal on ... gets,” says Butch, CertainTeed’s Director of Contractor Programs. , As a result, ...
(Date:5/31/2016)... ... May 31, 2016 , ... CallTrackingMetrics's software ... campaigns, to monitor the performance of sales and support staff, and to efficiently ... The software allows customers to record, transcribe, route, document, and report on everything ...
Breaking Medicine News(10 mins):
(Date:5/26/2016)... 26, 2016 According to a new ... Market - U.S. Industry Analysis, Size, Share, Growth, Trends, and ... the U.S. was valued at US$ 5.89 Bn in 2014 ... from 2015 to 2023 to reach US$ 7.99 Bn in ... and emerging needle free drug delivery devices and the market ...
(Date:5/26/2016)... 26, 2016 TARE (Transarterial ... Cost Savings and Overall Decreased Use of ... an international specialist healthcare company, has today announced ... Annual Meeting of ISPOR (International Society for Pharmacoeconomics ... carcinoma (HCC) using yttrium-90 glass microspheres is associated ...
(Date:5/26/2016)... , May 26, 2016 ... has matured into an essential life science tool for ... development applications. BCC Research reveals in its new report ... second growth phase, one powered by a range of ...      (Logo: http://photos.prnewswire.com/prnh/20140723/694805 ) , ...
Breaking Medicine Technology: