IMAGE RECORDING POWERPOINT

Question 1

What is the aerial image

Answer 1

Photons emerging from the subject just before they reach the film

Question 2

The intensity of the aerial image depend on what factors of the subject

Answer 2

thickness and density

Question 3

The cassette secures the film and protects from what two things

Answer 3

Light and pressure

Question 4

The front surface of the cassette allows x rays to penetrate, while the back surface is ________ _______ to prevent ________ ________

Answer 4

Lead Lined
Back Scatter

Question 5

Cassettes are identified in what two ways

Answer 5

1. Color code for screen type
2. Number on back

Question 6

Cassettes are expensive and cannot get wet or sustain any impact, as that would cause the film to lose contact with the ___________

Answer 6

Screen

Question 7

How often should cassettes be cleaned

Answer 7

Monthly

Question 8

What is the primary purpose of screens

Answer 8

Intensify x ray photons so that less radiation and mAs is needed

Question 9

What do screens contain that glow (fluoresce) when hit with photons…. creating visible light, exposing the film

Answer 9

Phosphor crystals

Question 10

What percentage of film exposure is from photons vs visible light created by the fluorescing of the phosphor crystals

Answer 10

5%: Photons
95%: Fluorescing of the phosphor crystals