X-Ray Screening and Image Interpretation Flashcards

What does 'superimposition' mean in the context of TSA X-ray image interpretation?

Answer: When multiple objects overlap in an X-ray image, making individual items difficult to identify

Superimposition occurs when objects overlap in an X-ray image, obscuring their true shapes and making threat identification more difficult.

What color do inorganic non-metallic items (such as ceramics and glass) typically appear in dual-energy X-ray images?

Answer: Green

Inorganic non-metallic materials such as ceramics and glass typically appear green in dual-energy X-ray imaging systems.

What is the purpose of the Threat Image Projection (TIP) system used in TSA X-ray operations?

Answer: To periodically insert simulated threat images into real X-ray streams to test officer vigilance

TIP superimposes realistic simulated threat images into the live X-ray stream to continuously test and measure officer detection performance on the job.

Why are TSA officers trained to view X-ray images from multiple perspectives during image analysis?

Answer: To identify items from different angles that may be obscured in a single view

Viewing images from multiple angles helps officers detect threats that might be hidden, overlapping, or ambiguous from a single perspective.

Which advanced scanning technology creates a three-dimensional representation of bag contents by capturing images from multiple angles?

Answer: Computed Tomography (CT) scanning

Computed Tomography (CT) scanning rotates around the bag to capture multiple cross-sectional images, which are combined into a 3D representation that aids threat detection.

A bag's X-ray image shows what appears to be wires connected to a cylindrical object. What is the correct officer response?

Answer: Follow prohibited item and alarm resolution procedures and do not unilaterally clear the bag

Wires connected to cylindrical objects are a recognized threat indicator; the officer must follow full alarm resolution procedures and cannot independently clear such a bag.

Under TSA's 3-1-1 liquids rule, which of the following items would require additional or alternate screening if found in a carry-on bag?

Answer: A 5 oz bottle of water

Under the 3-1-1 rule, liquids must be in containers of 3.4 oz (100 ml) or less; a 5 oz water bottle exceeds the limit and is prohibited in carry-on bags.