We create photo-like Z Backscatter images showing organic materials by directing a sweeping beam of X-rays at the object under examination, and then measuring and plotting the intensity of scattered X-rays as a function of the beam position. This is made possible by patented “Flying Spot” technology.

How does backscatter work?

“Backscatter machines use rotating collimators to generate X-rays, which pass through a slit and strike a passenger standing inside. The X-rays penetrate clothing, bounce off the person's skin and return to detectors mounted on the machine's surface.

Are backscatter machines still used?

The backscatter machines are still used for screening at a few of America's largest 25 airports, but the TSA has not confirmed which ones. ... The United States remains one of the only countries in the world to X-ray passengers for airport screening.