X ray film

What was the most significant disadvantage of using Cellulose Nitrate as a film base in early radiography?

• It was highly flammable and a major fire hazard.

• It had poor optical clarity and a yellow tint.

• It was not dimensionally stable during processing.

• It was too flexible and prone to kinking.

Which feature of a modern Polyester base is most critical for ensuring accurate image geometry after processing?

• Dimensional Stability

• Durability

• Flexibility

• Optical Clarity

How does the adhesive layer create a strong bond between the base and the emulsion?

• It uses electrostatic attraction to hold the layers together.

• It acts as a simple, non-reactive glue.

• It is made of the same hardened gelatin as the supercoat

• It contains a solvent that slightly softens the base, allowing gelatin to interlock.

What is the primary role of Silver Iodide (AgI) within the emulsion's silver halide crystals?

• It helps the gelatin bind to the silver halide crystals.

• It is the main component that forms the black metallic silver of the image

• It protects the emulsion from physical scratches.

• It increases the sensitivity of the crystals to radiation

Why is a double-coated film considered 'faster' than a single-coated film?

• The two emulsion layers create a parallax effect that enhances speed.

• The base material is different, allowing for quicker chemical processing.

• It has twice the amount of silver halide, increasing its sensitivity.

• It is physically thinner and allows X-rays to pass through more easily.

In which of the following applications would a single-coated film be the preferred choice?

• General chest radiography

• Fluoroscopy spot films

• Mammography

• Dental Radiography

What is the fundamental difference in how a screen film and a non-screen film are exposed?

• Screen film is exposed primarily by x ray, while non-screen film is exposed directly by visible light.

• Screen film is exposed primarily by visible light, while non-screen film is exposed directly by X-rays.

• Screen film can only be processed manually, while non-screen film is for automatic processors.

• Screen film is used for digital imaging, while non-screen film is for analog.

Which layer of the film is primarily responsible for protecting the delicate emulsion from scratches and handling artifacts?

• The Emulsion Layer

• The Base

• The Supercoat Layer

• The Adhesive Layer

The emulsion layer is best described as what type of mixture?

• A homogeneous mixture

• A heterogeneous mixture

Why is a slight blue tint added to the base of modern radiographic films?

• It is a natural byproduct of manufacturing polyester.

• To reduce eye strain and improve visual contrast for the radiologist.

• To help the adhesive layer bond more effectively.

• To increase the film's sensitivity to X-rays.