Prelim | CH12

Question 1

Sequence of Events in Processing a Radiograph

Answer 1

1. Wetting
2. Developing
3. Rinsing in stop bath
4. Fixing
5. Washing
6. Drying

Question 2

Wetting Purpose

Answer 2

Swells the emulsion to permit subsequent chemical penetration

Question 3

Approximate time for wetting (manual and automatic)

Answer 3

Manual: 15secs
Auto: —

Question 4

Developing purpose

Answer 4

Produces a visible image from the latent image

Question 5

Developing approximate time (Manual and automatic)

Answer 5

Manual: 5mins
Auto: 22s

Question 6

Rinsing purpose

Answer 6

Terminates development and removes excess chemical from the emulsion

Question 7

Rinsins in stop bath approximate time (Manual and automatic)

Answer 7

Manual: 30secs
Auto: —

Question 8

Fixing purpose

Answer 8

Removes remaining silver halide from emulsion and hardens gelatin

Question 9

Fixing approximate time (Manual and automatic)

Answer 9

Manual: 15mins
Auto: 22secs

Question 10

Washing purpose

Answer 10

Removes excess chemicals

Question 11

Washing approximate time (Manual and automatic)

Answer 11

Manual: 20mins
Auto: 20secs

Question 12

Drying purpose

Answer 12

Removes water and prepares radiograph for viewing

Question 13

Drying approximate time (Manual and automatic)

Answer 13

Manual: 30mins
Auto: 26secs