TSO X-Ray Image Interpretation 3

Question 1

On a dual-energy X-ray system, items with HIGH atomic numbers (Z-number) typically appear in which color?

Accepted Answer

Blue or green

Answer

High-Z materials such as metals are assigned blue or green colors on dual-energy X-ray systems to help officers quickly identify them.

Question 2

A carry-on bag passes through X-ray and shows a cluster of small, bright white circular objects grouped together. The MOST likely concern is:

Accepted Answer

Ball bearings or metal projectiles that could be components of an IED

Answer

Clustered dense spherical objects resembling ball bearings are a recognized IED component signature requiring additional screening.

Question 3

Why is it important for TSOs to vary their focus point and scan speed when viewing X-ray images?

Accepted Answer

To reduce visual fatigue and avoid missing items in peripheral areas of the image

Answer

Varying scan speed and focus point counteracts inattentional blindness and ensures the entire image area is evaluated.

Question 4

Which of the following objects would appear MOST penetrable (darkest) on an X-ray image?

Accepted Answer

A foam pillow

Answer

Low-density foam absorbs very little radiation, allowing most X-rays to pass through and producing a very dark image.

Question 5

A bag contains what appears to be a book. However, the book's spine area shows a dense metallic line with small cylindrical objects. The TSO should:

Accepted Answer

Resolve the anomaly through additional screening because this pattern is consistent with a book-bomb configuration

Answer

Metallic components embedded within a book's spine can indicate a concealed device and must be resolved through additional screening.

(TSO) Transportation Security Officer Certification Practice Test