2011年4月2日星期六

No health risk airport body scanners

A new study reported that airport body scanners pose no health risk. The scans provide a lot of radiation, equivalent with 3 to 9 minutes of radiation on a normal day received.

Full-body scanners used around airports, secure end of the year about which that 1000 of which are provided in the United States, pose no health risks, a study has found published.

The University of California study, appear in the "Archives of internal medicine" found that a traveler a body scanner 50 time through the same amount of radiation as a dental X-ray retained, would have to.

Also a lung that equivalent was X-ray with 1,000 travel through an airport scanner, while a mammogram delivers as much radiation as the passing of 4,000 times by such a scanner said the researcher.

The study focused on x-ray machines "backscatter" synchronizes the low-dose X-rays, similar to those used in medical imaging use. So far, there are some 486 full-body scanners in place in the 78 US airports.

"The radiation doses of radiation of scans are extremely small;" the scans a set of rays, 3 to 9 minutes of radiation through normal daily life received equivalent to deliver, "wrote the authors."

And "since fly itself increases exposure of to ionizing radiation, the scan that is less than one percent of the dose will help received a flyer from exposure to cosmic radiation at high altitudes," added.

"The estimate is difficult, the cancer risks associated with these scans but use the only available models, the risk is extremely small, even under frequent flyer." We conclude that it there is no significant risk of radiation from the scans, "she wrote."

Advanced imaging technology of X-ray scanners sparked an uproar among the travellers currently in use at airports around the United States because they generate a graphic of a person's naked body, genitals and all.

Others provide the scans may be unsafe.


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