Imaging the Film

Question 1

3 receptor components

Answer 1

1. cassette
2. intensifying screens
3. film

Question 2

Which side of the cassette faces the patient?

Answer 2

Front

Question 3

Which side of the cassette is farthest from the object of interest?

Answer 3

Back

Question 4

What is the 3x7 section of lead used for?

Answer 4

Photo imprinting

Question 5

This aids in converting the x-rays to light after they penetrate the patient
Contain phosphor crystals

Answer 5

Intensifying screens

Question 6

Phosphor Crystals used in intesifying screens that give off blue light and needs blue light sensitive film

Answer 6

Ca Tungstate

Question 7

Phosphor Crystals used in intensifying screens that give off green light and need green light sensitive film

Answer 7

Rare Earth

Question 8

Speed at which the x-rays are converted to light by phosphor

Answer 8

Intrinsic conversion efficiency

Question 9

Conversion efficiency of Ca Tungstate

Answer 9

30-40%

Question 10

Conversion efficiency of Rare Earth

Answer 10

50-60%

Question 11

Life of intensifying screens

Answer 11

15-20 yrs

Question 12

Crystals that fluoresce when x-rays pass through

Answer 12

Phosphors

Question 13

4 layers of the intensifying screens

Answer 13

1. Base
2. Reflective
3. Phosphor
4. Protective

Question 14

Layer of the intensifying screen that is made of plastic/polymer that is virtually indestructible

Answer 14

Base

Question 15

Layer of the intensifying screen that reflects light emitted by phosphor layer back towards the x-ray film

Answer 15

Reflective

Question 16

Layer of the intensifying screen that converts the absorbed x-rays to light

Answer 16

Phosphor

Question 17

Layer of the intensifying screen that is a clear coating on the outer surface of the screen that protects the phosphor layer and reduces static

Answer 17

Protective

Question 18

Intensifying screen speed that has small crystals and provides optimum detail

Answer 18

Slow

Question 19

Intensifying screen speed that has bigger crystals and less detail

Answer 19

Fast

Question 20

What is a disadvantage to using Rare Earth?

Answer 20

$$$$

DOLLA DOLLA BILL

Question 21

Photons of the x-ray beam are converted to light when they reach the emulsion of the screen

Answer 21

Luminescence

Question 22

Instant reaction that lasts exactly as long as the phosphor is stimulated and only give off light when x-rays hit them
Ideal

Answer 22

Fluorescence

Question 23

Phosphor continues to emit light after exposure
Not desirable
AKA “afterglow”

Answer 23

Phosphorescence

Question 24

When a screen ages, it can produce a white, speckled appearance AKA

Answer 24

screen craze

Question 25

4 layers of film

Answer 25

1. Base 2. Adhesive 3. Emulsion 4. Supercoat

Question 26

Layer of film that contains silver halide crystals and gelatin

Answer 26

Emulsion

Question 27

When film is ______, it is vulnerable to scratches.

Answer 27

wet

Question 28

Layer of film that prevents tearing, scratching, and abrasions

Answer 28

Supercoat

Question 29

Image that is formed but not visible

Answer 29

Latent image

Question 30

If you drop an x-ray film, it will _________ from point of impact

Answer 30

streak

Question 31

Blue light receiving film is

Answer 31

green

Question 32

Green light receiving film is

Answer 32

violet

Question 33

Film made of smaller crystals that accepts variations in exposure factors or processing without a major change in density Slower

Answer 33

Wide latitude

Question 34

Film made of large crystals that requires less change in exposure factors or processing to affect density Faster

Answer 34

Narrow latitude

Question 35

If film is expired, should you use it?

Answer 35

No

Question 36

You should store film: (3)

Answer 36

1. away from light 2. away from chems 3. away from heat/humidity