[ RadSafe ] Z-Backscatter technology
tmg73 at drexel.edu
Fri Oct 23 15:06:53 CDT 2015
>From the article:
"The top image shows how such technology might be used to discover human trafficking."
>From that wording, the image is likely a Photoshop job, and if the image is nonsensical, then the artist is unfamiliar with the actual scans produced.
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From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Bradt, Clayton (HEALTH)
Sent: Friday, October 23, 2015 1:13 PM
To: Jason Meade; RADSAFE
Subject: [ RadSafe ] Z-Backscatter technology
Are you saying that there is not a decrease in the backscatter signal in those dark areas? If so why would the imaging software draw such apparently accurate lung-like regions within the chest cavities?
Jason Meade wrote:
The darker appearance of the lungs in the Z-Backscatter pictures is due to the image reconstruction software.
On Thu, Oct 22, 2015 at 11:13 AM, Bradt, Clayton (HEALTH) < clayton.bradt at health.ny.gov<mailto:clayton.bradt at health.ny.gov>> wrote:
> Does anyone know how I might get ahold of technical information on the
> Z-Backscatter technology as used for example by the AE&S vans
> mentioned in the above article? I am especially curious as to how the
> image of the contents of a vehicle is not obscured by backscatter off
> of the sides of the van and of the vehicle being scanned. Both the
> beam and scattered x-rays must pass through both vehicles on the way
> out and back. Also I'm curious about the density information presented
> in the images of people within a trailer. They appear to show the
> individuals lungs as dark regions within the thoracic cavities. I
> would not expect this from a backscatter image.
> Clayton Bradt
> Principal Radiophysicist
> NYS Dept. of Health
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