RAD 220 - Week 2 PREP

What does the aluminum or lead do in a cassette?

• Protects the patient from scatter radiation

• Protects the technologist from scatter radiation

• Absorbs back scatter x-ray photons

• Filters out low energy photons to improve spatial resolution

What is the anti-static material usually in PSP cassettes and what is its function?

• Aluminum

• Lead

• Felt

• Carbon Fiber

Answer explanation

Felt protects against static electricity buildup, dust collection and mechanical damage to plate.

The layers of the imaging plate include:

1. 1. Protective

2. 2. Phosphor

3. 3. Silver halide emulsion

4. 4. Phosphor

5. 5. Reflective

6. 6. Conductive

7. 7. TFT

8. 8. Color

9. 9. Support

10. 10. Backing

• 1, 2, 3, 5, 6, 8, 9, 10

• 1, 2, 4, 5, 6, 8, 9, 10

• 2, 4, 5, 6, 7, 8, 9, 10

• 3, 5, 6, 8, 9, 10

What layer is a thin, tough, clear plastic that protects the phosphor layer?

• Phosphor layer

• Backing layer

• Reflective layer

• Protective layer

What is the phosphor layer made of?

• Cesium Iodide crystals in a structured configuration

• Gadolinium Oxysulfide in turbid formation

• Photostimulable phosphor that is part of the barium fluorohalide family

• Silver Halide crystals

This layer sends light in a forward direction when released in the reader. May be black to reduce the spread of stimulating light and the escape of emitted light. Some detail is lost in this process.

• Phosphor layer

• Backing layer

• Protective layer

• Reflective layer

This materials absorbs and reduces static electricity in PSP cassettes.

• Conductive layer

• Reflective layer

• Phosphor layer

• TFT layer

This layer absorbs the stimulating light but reflects emitted light.

• Reflective layer
• Color layer

• Phosphor layer

• Translucent layer

Where is the color layer located?

• Between the protective and phosphor layers

• Between the active and support layers

• Between the reflective and conductive layer

• Between the phosphor and reflective layer

What layer gives the imaging plate strength?

• Reflective layer

• Backing layer

• Conductive layer

• Support layer