In a first in the U.S., the Transportation Security Administration said Tuesday that it plans to begin using computed-tomography or CT scanners to inspect carry-on bags at one checkpoint in the Phoenix airport by the end of the year.
CT scanners are already used to screen checked baggage. The process is mostly automated — the scanners generate 3-D images that are analyzed by computers, and security workers only check a bag if something is suspicious.
The use of CT technology at airport checkpoints would eliminate the need for screeners to examine X-ray images of every bag.
TSA said it will work with American Airlines to make other changes to speed up screening this...