Navigation Links
Frequent MRI Scanner Exposure Might Affect Memory: Study
Date:8/30/2012

THURSDAY, Aug. 30 (HealthDay News) -- Exposure to magnetic fields generated by MRI scanners may lower a person's mental skills, according to a small new study.

The effects were most noticeable in tasks that required high levels of working memory, which could have implications for surgeons and other medical staff who work within the vicinity of MRI scanners, the researchers said.

The study was published online Aug. 29 in the journal Occupational and Environmental Medicine.

Along with radio waves, MRI uses strong magnetic fields to obtain detailed images of the brain and spine, explains a journal news release. Three types of magnetic fields -- static, switched gradient and radiofrequency -- are used to create an MRI image.

Even when no imaging is taking place, the static magnetic field is always present.

Thirty volunteers completed the study. All were exposed to an MRI static magnetic field of zero, 0.5 (medium) and 1 (high). Each exposure was conducted one week apart. After each exposure, the volunteers were given 12 timed mental tasks to test the sorts of skills that a surgeon or other health care professional might use within the area of an MRI scanner.

The results showed that the medium and high exposures to the static magnetic field had a significant effect on general functions such as attention, concentration and visual and spatial awareness.

After medium and high exposures, volunteers took 5 percent to 21 percent longer to complete complex mental tasks, which rely on working memory.

"The exact implications and mechanisms of these subtle acute effects in [practice] remain unclear," wrote Professor Hans Kromhout, of Utrecht University in the Netherlands, and colleagues.

They noted that the introduction of increasingly powerful MRI machines has raised exposure levels to static magnetic fields for both patients and medical staff.

"To date, mainly health and safety concerns for patients have been evaluated, but possible consequences are particularly important for professionals ... cleaners and MRI engineers since they are repeatedly exposed to static magnetic fields," the researchers noted.

While the study found an association between MRI exposure and slower working memory, it did not prove a cause-and-effect relationship.

More information

The U.S. Food and Drug Administration has more about MRI.

-- Robert Preidt

SOURCE: Occupational and Environmental Medicine, news release, Aug. 29, 2012


'/>"/>
Copyright©2012 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Men with large waists face an increased risk of frequent urination
2. HPV testing in HIV-positive women may help reduce frequent cervical cancer screening
3. UC Davis study finds stray-bullet shootings frequently harm women and children
4. Mold Exposure in Infancy May Raise Asthma Risk
5. Chronic exposure to staph bacteria may be risk factor for lupus, Mayo study finds
6. Chronic Butter Flavoring Exposure Linked to Harmful Brain Process
7. In-utero exposure to magnetic fields associated with increased risk of obesity in childhood
8. DNA damage in roofers due to PAH exposure - possible cancer link
9. Adolescent sexual behavior tied to motion picture sexual content exposure, says MU researcher
10. Hair samples from infants show exposure to anti-HIV drugs in the womb and during breast-feeding
11. In utero exposure to diesel exhaust a possible risk factor for obesity
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Frequent MRI Scanner Exposure Might Affect Memory: Study
(Date:5/26/2016)... ... 26, 2016 , ... There are nearly 14.5 million people living with and ... On Sunday, June 5, 2016, communities around the world will gather to recognize these ... National Cancer Survivors Day® is an annual worldwide Celebration of Life that is held ...
(Date:5/26/2016)... NY (PRWEB) , ... May 26, 2016 , ... ... Hereditary Retinal Degeneration” for the Foundation Fighting Blindness, Long Island Chapter on June ... to the public. , Dr. Maisel, founder of Retina Group of New ...
(Date:5/26/2016)... ... May 26, 2016 , ... Memorial Day Weekend marks ... Amica Insurance is sharing tips to make sure your family and vehicle are ... National Safety Council, there may be 439 deaths and an additional 50,500 serious injuries ...
(Date:5/26/2016)... Tampa, Fla. (PRWEB) , ... May 26, 2016 , ... ... Center (AHEC) to host a six-week smoking cessation class starting June 6 at their ... AHEC’s website, http://www.gnahec.org . , Additionally, the Lung Institute has created a free ...
(Date:5/26/2016)... ... May 26, 2016 , ... American orthopedic ... medical officer of Blue Horizon International (BHI), Brian Mehling, M.D., spoke at an ... during May 5-6, 2016 in Chicago, IL, USA. Dr. Mehling’s presentation was focused ...
Breaking Medicine News(10 mins):
(Date:5/24/2016)... -- Cirujanos holandeses han puesto en marcha ... a compartir sus mejores prácticas por el mundo y ... de Europa, África, Asia y ... que combina la transmisión en vivo con mensajería instantánea ... Educación   "Imagine un médico de Medicines sans ...
(Date:5/24/2016)... Nev. , May 24, 2016  Diana Russell ... "eats" her organs from the inside out.  This disease ... completely dependent on her children and grandchildren to leave ... her wheelchair, Diana,s family cannot haul the wheelchair.  So ... in the car, and Diana is left to wait ...
(Date:5/24/2016)... May 24, 2016 Celsion Corporation (NASDAQ: ... company, today provided an update on its ongoing ... trial combining GEN-1, the Company,s DNA-based immunotherapy, with ... newly-diagnosed patients with advanced ovarian cancer who will ... GEN-1 is an IL-12 DNA plasmid vector formulated ...
Breaking Medicine Technology: