Radiography

Question 1

What is the name given to the structure which absorb x-rays and prevent them passing through?

Answer 1

Radioplaque

Question 2

Which would not be a reason to take an x-ray?

Answer 2

To determine plaque score

Question 3

The benefits of taking an x-Ray and using it for treatment planning or diagnosing should outweigh the risks of any tissue damage to the patient. What is this called?

Answer 3

Justification

Question 4

Which legislation protects staff?

Answer 4

IRR99

Question 5

Which legislation protects patients?

Answer 5

IR(ME)R2000

Question 6

How much has the ALARA principle reduced the amount of scattered radiation in the workplace?

Answer 6

40%

Question 7

All x-ray sets must be professionally assessed every?

Answer 7

3 years

Question 8

What is the term used to describe the 2 metre distance around the x-ray machine during exposure?

Answer 8

Safety zone

Question 9

How many hours of radiograph and radiation protection during one cycle of CPD must be done?

Answer 9

5 hours

Question 10

Which x-ray film would be the best used to determine the presence of an unerupted upper canine?

Answer 10

Occlusal

Question 11

Which x-ray film would be the best used to determine the presence of occlusal caries?

Answer 11

Horizontal bitewing

Question 12

What type of radiograph is taken on a cephalostat machine?

Answer 12

Lateral skull

Question 13

What do cassettes contain which reduces the exposure time needed?

Answer 13

Intensifying screens

Question 14

What is the imagine known as on the x-ray film before it has been developed?

Answer 14

Latent

Question 15

What colour is the safety lamp in the dark room?

Answer 15

Red

Question 16

What is the most common reasons that an image is lost during automatic developing?

Answer 16

Rollers dirty

Question 17

How many extraoral radiographs need to be taken per week in order for a monitoring badge to be necessary?

Answer 17

50

Question 18

If the image of a tooth on a radiograph looks squashed and stunted what angulation exposure fault has occurred?

Answer 18

Foreshortening

Question 19

When mounting a radiograph where should the pimple be?

Answer 19

It doesn’t matter as long as the pimple faces out

Question 20

When the collimator is not angled central to the beam only part of the film is exposed. What is this called?

Answer 20

Coming

Question 21

What is the purpose of lead foil?

Answer 21

Prevents scatter radiation

Question 22

Foreshortening of image

Answer 22

Collimator to sleep

Question 23

Elongation of image

Answer 23

Collimator to shallow

Question 24

Fogged film

Answer 24

Film exposed to light

Question 25

Blank film

Answer 25

X-ray machine not switched on

Question 26

Dark image

Answer 26

Overdeveloped, developer too strong, temperature too high

Question 27

Faint image

Answer 27

Underdeveloped, developer too weak, temperature too low

Question 28

Fading image

Answer 28

Image placed in fixed for inadequate time

Question 29

Partial image

Answer 29

Film placed only partially in developer

Question 30

Blank film

Answer 30

Film placed in fixer before developer