X-Ray or X-Treme? The Truth About Airport Security Scanners

Standing in line at Malta International Airport, you’re about to step into the body scanner. You’ve heard the whispers, the debates. Are these machines safe, or are they secretly zapping us with harmful radiation? Let’s separate fact from fiction and demystify the airport security scanner.

What’s Inside the Machine?

Airport body scanners use two main types of technology: millimeter wave and backscatter X-ray. The millimeter wave scanners, which use low-power radio waves, are the ones you’ll find in most airports worldwide, including Malta’s. They’re similar to the ones used in shops to detect shoplifting. The backscatter X-ray scanners, which use low-dose X-rays, have been phased out in many places due to privacy concerns, but some still exist.

Both types of scanners emit low levels of non-ionizing radiation, which is different from the ionizing radiation used in medical X-rays. Non-ionizing radiation doesn’t have enough energy to dislodge electrons from atoms, making it less harmful. It’s the same type of radiation you’re exposed to from your mobile phone or Wi-Fi router.

How Much Radiation Are We Talking About?

To put it into perspective, let’s compare the radiation exposure from a body scanner to other everyday activities. A single scan exposes you to about 0.1 microsieverts of radiation. To put that into context, you’re exposed to about 2.4 millisieverts of radiation each year from natural sources like the sun and cosmic rays. That’s a million times more than a single body scan.

Even if you’re a frequent flyer, the cumulative effect is minimal. A person who takes one round-trip flight per week would receive about 0.005 millisieverts of radiation per year from body scans, which is still far below the annual limit of 1 millisievert set by international radiation safety standards.

What About Long-Term Effects?

Despite the low levels of radiation, some people are still concerned about long-term effects. However, numerous studies and health organizations, including the World Health Organization and the U.S. Food and Drug Administration, have concluded that the radiation exposure from airport body scanners is too low to cause any health effects, even with long-term use.

Dr. Kenneth Foster, a professor of bioengineering at the University of Pennsylvania, puts it into perspective: “The radiation dose from a body scanner is so low that it’s essentially zero. It’s like saying that a single snowflake causes a blizzard.”

Privacy Concerns: The Other Side of the Coin

While the health risks of airport body scanners are minimal, privacy concerns are a different story. The backscatter X-ray scanners, in particular, have been criticized for producing detailed images of passengers’ bodies, raising concerns about invasion of privacy. Some airports have switched to millimeter wave scanners or advanced imaging technology that uses software to blur the images, addressing these concerns.

In Malta, the Transport Malta Authority assures that all security measures, including body scanners, are in line with international standards and regulations. They also emphasize the importance of passenger cooperation in maintaining a safe and efficient security process.

So, the next time you’re at Malta International Airport, you can step into the body scanner with peace of mind, knowing that it’s not the radiation you should be worried about. But remember, privacy is another matter altogether. If you’re concerned, you can always opt for a pat-down instead.