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:2/13/2016)... ... ... an Au Pair comes all the way around the world to provide child ... are often worried things won’t go well. More often than not, however, they find out ... the Year winner’s all commented how their Au Pairs have become a part of the ...
(Date:2/12/2016)... ... February 12, 2016 , ... According to an ... beginning to account for a significant portion of hernia repairs throughout the United States. ... Beverly Hills Hernia Center notes that this trend has not only been expected, but ...
(Date:2/12/2016)... WA, and Washington, DC (PRWEB) , ... ... ... PATH and the Siemens Foundation today announced a new initiative—the Siemens Foundation-PATH ... for low-resource settings. The partnership will recruit top students from U.S. universities ...
(Date:2/12/2016)... ... February 12, 2016 , ... Fixed Dose Combination Drug Development: ... EST, http://www.fdanews.com/fixeddosecombination , Fixed dose combination products are ... attention from all stakeholders in the development of new chemical entities. , However, ...
(Date:2/12/2016)... ... 12, 2016 , ... Coco Libre, the maker of coconut water beverages with ... Style Lounge Event. Coco Libre will offer musicians and celebrities the company’s signature Organic ... The invitation-only gifting suite, held this year at the W Hollywood Hotel, has become ...
Breaking Medicine News(10 mins):
(Date:2/12/2016)... , February 12, 2016 /PRNewswire/ ... nicht anders vermerkt)   http://www.sedar.com ... http://www.telestatherapeutics.com abrufbar.    --> ... des Unternehmens http://www.telestatherapeutics.com abrufbar.    ... (TSX:TST; PNK:BNHLF) veröffentlichte heute seinen Konzernabschluss des ...
(Date:2/12/2016)... ALISO VIEJO, Calif. , Feb. 12, 2016 /PRNewswire/ ... patient enrollment in a study to evaluate the safety ... specifically for the treatment of ruptured intracranial aneurysms.  Prof ... Bicetre University Hospital, in Paris, France ... the first patient. France ...
(Date:2/12/2016)... 2016  OMS Supply, a large provider of oral ... today the recent launching of their new company website. ... features that enhance the user experience and enable practitioners ... --> --> Despite the ... that started in early 2016, they have already made ...
Breaking Medicine Technology: