Navigation Links
Risk of cancer increases with exposure to low-dose radiation
Date:2/7/2011

Exposure to low-dose radiation from cardiac imaging and other procedures after a heart attack is associated with an increased risk of cancer, found a new study published in CMAJ (Canadian Medical Association Journal) (pre-embargo link only) http://www.cmaj.ca/embargo/cmaj100463.pdf.

The use of procedures with low-dose ionizing radiation, such as computed tomography (CT) angiography and nuclear scans, is increasing which has led to mounting concern in the medical community that patients may be at increased risk of cancer. For patients with known or suspected coronary artery disease, the trend towards increased use of these procedures is particularly strong. In many centres, these procedures are replacing those that do not use radiation, such as stress tests on exercise treadmills and echocardiography. However, little is known about the effects of exposure to radiation and the risk of cancer.

The study, conducted by researchers from the McGill University Health Centre (MUHC) and and the Jewish General Hospital in Montral, Quebec, looked at data on 82 861 patients who had a heart attack between April 1996 and March 2006 but no history of cancer. Of this number, 77% underwent at least one cardiac procedure with low-dose ionizing radiation within one year of the attack.

"We found a relation between the cumulative exposure to low-dose ionizing radiation from cardiac imaging and therapeutic procedures after acute myocardial infarction, and the risk of incident cancer," writes Dr. Louise Pilote, researcher in epidemiology at the Research Institute of the MUHC and director of the Division of Internal Medicine at the MUHC with coauthors. "Although most patients were exposed to low or moderate levels of radiation, a substantial group were exposed to high levels and in general tended to be younger male patients with fewer comorbidities."

The median age of patients was 63.2 years and 31.7% were women. Patients whose treating physician was a cardiologist had higher levels of exposure to radiation compared with those whose treating physician was a general practitioner. There were 12 020 incident cancers detected during follow up, with two-thirds of the cancers affecting the abdomen/pelvis and chest areas. "These results call into question whether our current enthusiasm for imaging and therapeutic procedures after acute myocardial infarction should be tempered," conclude the authors. "We should at least consider putting into place a system of prospectively documenting the imaging tests and procedures that each patient undergoes and estimating his or her cumulative exposure to low-dose ionizing radiation."

In a related commentary, http://www.cmaj.ca/embargo/cmaj101885.pdf Mathew Mercuri, McMaster University, and coauthors write that, although the radiation exposure of many tests is often low, "the frequency with which such tests are performed may pose a population risk." They state the best solution may be prevention, which could mean using procedures with lower or no radiation exposure, especially if there are multiple procedures involved. They call for programs to track radiation doses to help patients and physicians track the risk of cumulative exposure.


'/>"/>

Contact: Kim Barnhardt
kim.barnhardt@cmaj.ca
613-520-7116 x2224
Canadian Medical Association Journal
Source:Eurekalert

Related medicine news :

1. Protein may be key to new treatment in a childhood cancer
2. Urine-sniffing dogs: Early detection of prostate cancer
3. Heart Scans May Raise Cancer Risk, Study Finds
4. Breast Cancer Treatment May Lead to Hip Fracture
5. Improving care for bowel cancer patients
6. Cancer on the Rise in Developing Countries: Report
7. Report says economic development could change worldwide face of cancer
8. New induced stem cells may unmask cancer at earliest stage
9. Healthier Lifestyles May Prevent 340,000 U.S. Cancers a Year: Study
10. Destined for disease: Breast cancer mutation regulates cell fate
11. CSHL study unmasks a stem cell origin of skin cancer and the genetic roots of malignancy
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/21/2017)... ... 21, 2017 , ... With ProSlideshow Portrait from Pixel Film Studios creating a ... select from up to two layers of subject matter along with fully customizable backdrop ... Final Cut Pro X. , With ProSlideshow Portrait each user are given ...
(Date:9/21/2017)... Falls Church, VA (PRWEB) , ... September 21, ... ... **An FDAnews Webinar**, Sept. 26, 2017 — 1:30 p.m. – 3:00 p.m. ET, ... exacting business. It’s easy to get things wrong, run afoul of The Quality ...
(Date:9/21/2017)... Angeles, CA (PRWEB) , ... September 21, 2017 ... ... a lunch and learn with Infinity Behavioral Health Services for professionals in the ... in a Commercial Payer Audit . , Insurance companies and state and ...
(Date:9/21/2017)... IL. (PRWEB) , ... September 21, 2017 , ... ... results released today of a new member survey conducted by the International ... restoration procedures performed from 2014 to 2016 rose 60 percent, with 635,189 procedures ...
(Date:9/21/2017)... ... September 21, 2017 , ... Bill Howe Plumbing’s mission is to create an ... to the community. For over 37 years, they have operated with their mission at ... in San Diego. They were chosen as the Best San Diego plumber in ...
Breaking Medicine News(10 mins):
(Date:9/7/2017)... 7, 2017 Caris Life Sciences, a ... the promise of precision medicine, today announced results ... of its molecular profiling approach in guiding therapeutic ... profiling plus (CGP+) with Caris Molecular Intelligence ® ... a molecular level, leading to more therapeutic options ...
(Date:9/6/2017)... TORONTO , Sept. 6, 2017 /PRNewswire/ ... new knowledge and skills while treating their ... for hands-on experience without involving patients. Simulation ... skills. Clinicians can carry out procedures, refine ... at risk. Integration of new technology, such ...
(Date:9/5/2017)... 5, 2017  Xyntek Inc. has announced another milestone in their continued growth ... to meet the growing demands of customer engagements regionally.  ... Xyntek's new Midwest office is located at 318 West Adams Street, Suite ... Xyntek's ... ...
Breaking Medicine Technology: