What did this chap do to get his scan?
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What did this chap do to get his scan?
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What did this chap do to get his scan... Find out here !
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Cat:OpenClinicalForum:Radiology
Cat:OpenClinicalForum:RadiologyDiscussion:4d1208d0-9f9a-482b-8e34-a9373cf40698
Forums » Open clinical » Radiology » What did this chap do to get his scan?
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What did this chap do to get his scan?
posted at 18/8/2012 12:08 AM BST
on bmj.com
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Posts: 317
First: 27/10/2011 Last: 8/5/2013 |
What did this chap do to get his scan...  Find out here! |
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Re: What did this chap do to get his scan?
posted at 18/8/2012 10:40 AM BST
on bmj.com
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Posts: 2034
First: 12/3/2010 Last: 17/5/2013 |
Always suspicious of such "Amazing!" online stories, I wondered if it was true, and if it was how they got the picture. I think this site shows how, as this version of the pic includes the edge of the screen it appeared on http://www.theblogismine.com/2012/08/10/x-ray-machine-norwegian-tourist-falls-asleep-on-airport-baggage-belt/ The right hand column of on-screen buttons and controls looks authentic (although I have no idea what an airport X-ray security screen looks like) and it might have been taken with a phonecam. Moreover, the Italian aiport staff are reported to have said that this happens now and again. Been there, got the radiation to prove it. And lo! It was reported from China in May this year: http://www.allwelike.com/2012/05/drunk-chinese-man-goes-through-x-ray-baggage-inspection-video/ I don't speak Chinese, but this is from "a train station at China’s Zhejiang province" and there is a video of a TV news report on the PRC equivalent of YouTube, YouKu (So original! Especially when the company is run by a Mr.Koo!) How much radiation would he have received, HR? Dangerous for a single dose? Compared to a CXR? John |
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Re: What did this chap do to get his scan?
posted at 18/8/2012 11:19 AM BST
on bmj.com
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Posts: 317
First: 27/10/2011 Last: 8/5/2013 |
Hi John D, This type of scan is slightly different to the conventional medical radiograph, relying on back-scattered x-rays, rather than those that make it through. A lot come back, especially the low energy ones, which is why operators of fluoroscopy machines still have to take a lot of precaution. This back scatter effect means that you can take pictures of much larger objects. The effective dose of an airport baggage scan is approximately 0.01 of the average daily background radiation dose, while a chest radiograph is about x10 the average daily dose. See this excerpt: According to the American National Standards Institute, in its standard N43.17-2002 "Radiation Safety for Personnel Security Screening Systems Using X-Rays," the maximum effective dose an individual could receive when walking through this scanner is 0.01 millirem (a unit of radiation dose commonly abbreviated mrem). For some perspective on the level of this dose, the annual effective dose each of us receives from background radiation is about 360 mrem; the effective dose from one chest x ray is about 10 mrem. The US work in rem (Röntgen equivalent in man) while the UK tends to use Sv (Sieverts) - you can see the exchange rate here (it's pretty fixed!) Finally, you actually get x4 the background daily dose from the flight itself through cosmic rays as you go up into thinner atmosphere. They don't bother handing out lead undies with the peanuts, though! |
Forums » Open clinical » Radiology » What did this chap do to get his scan?
