X-Ray Screening and Image Interpretation Flashcards

What does the acronym ETD stand for in TSA screening operations?

Answer: Explosives Trace Detection

ETD stands for Explosives Trace Detection; it is a swabbing technique used to detect trace amounts of explosive material on surfaces, hands, or items.

Per TSA standard protocol, how must a laptop computer be handled when a passenger is going through a standard security checkpoint screening lane?

Answer: It must be removed from the bag and placed alone in a separate screening bin

TSA requires laptops to be removed from bags and placed in a separate bin so officers can obtain a clear, unobstructed X-ray image of the device.

Which of the following items is classified as a prohibited item in carry-on baggage according to TSA regulations?

Answer: A box cutter or razor blade

Box cutters and razor blades are explicitly prohibited in carry-on baggage; they must be packed in checked luggage if transported.

If an X-ray alarm is triggered for a carry-on bag at a TSA checkpoint, what is the CORRECT response by the screening officer?

Answer: Conduct a thorough resolution process including alternate views and/or a physical bag inspection

TSA protocol requires a complete alarm resolution process—including additional X-ray views and physical inspection as needed—before a bag can be cleared.

In X-ray image analysis, what characteristic of an object—beyond color and shape—do TSA officers assess to help identify potential threats?

Answer: Density and atomic number indicated by color intensity

Color intensity in dual-energy X-ray directly reflects an object's density and atomic composition, helping officers distinguish between harmless and potentially dangerous materials.

Which type of sheet explosive material, often concealed by being molded flat or folded into clothing, is TSA officers specifically trained to recognize on X-ray?

Answer: PETN-based sheet explosives

PETN-based sheet explosives (such as Semtex or PETN sheets) are a high-priority X-ray training focus because they can be concealed flat within clothing or luggage walls.

A TSA officer observes an X-ray image where several items inside a bag are stacked and overlapping, making the bag's contents difficult to interpret. What is the best course of action?

Answer: Request additional X-ray views or conduct a physical search to resolve the unclear areas

When bag contents are obscured by superimposition or clutter, the officer must obtain additional X-ray angles or conduct a physical inspection to properly resolve the image.