Chapter 18

Question 2

What is the corrective action for a radiograph that displays a ‘tire track’ pattern?

Answer 2

Position film intraorally with the tube side toward the source of radiation.

Question 3

What does a clear or blank image indicate?

Answer 3

There was no exposure to radiation.

Question 4

What happens if a film is accidentally placed in the fixer before the developer?

Answer 4

The resultant image will be blank.

Question 5

What results from residual glove powder on the fingers that touches the film?

Answer 5

Black smudges.

Question 6

What does improper or insufficient washing of radiographic films result in?

Answer 6

Brown films.

Question 7

Does misuse of a cotton roll to stabilize the image receptor affect the image?

Answer 7

TRUE

Question 8

Should the image receptor be placed with the long dimension horizontal for anterior periapical radiographs?

Answer 8

FALSE

Question 9

Does a herringbone or tire track pattern appear if the film packet was placed reversed?

Answer 9

TRUE

Question 10

Does elongation error cause images to appear stretched out?

Answer 10

TRUE

Question 11

Can assembling an image receptor holder incorrectly lead to conecut error?

Answer 11

TRUE

Question 12

Does a dark image occur when the developing solution is diluted?

Answer 12

FALSE

Question 13

Does a black film indicate accidental exposure to white light?

Answer 13

TRUE

Question 14

What causes a partial image on the radiograph?

Answer 14

The level of developer is too low to cover the entire film.

Question 15

What causes white spots on the film?

Answer 15

Premature contact with the fixer solution.

Question 16

What causes dark spots on the film?

Answer 16

Premature contact with the developer.

Question 17

Can a light radiograph result from either underexposure or underdeveloping?

Answer 17

TRUE

Question 18

Can a dark radiograph result from either overexposure or overdeveloping?

Answer 18

TRUE

Question 19

Can a scratched safelight filter or incorrect bulb wattage result in film fog?

Answer 19

TRUE

Question 20

What appears on a processed film where a film packet was bent or subjected to excessive pressure?

Answer 20

A black line.

Question 21

Does a distomesial projection of the x-ray beam result in more severe overlapping in the posterior region?

Answer 21

FALSE

Question 22

Can exposing film to excessive heat and humidity compromise radiographic quality?

Answer 22

TRUE

Question 23

Is electronic noise the digital equivalent of film fog?

Answer 23

TRUE

Question 24

What should be done to avoid radiographic error while opening a film packet in the darkroom?

Answer 24

Remove the film from the outer packaging slowly.

Question 25

What happens if the darkroom door is accidentally opened during unwrapping of the film packets?

Answer 25

The resultant image will appear black.

Question 26

What results from bending a phosphor plate?

Answer 26

A white or missing image area.

Question 27

What causes an iridescent stain on the radiograph?

Answer 27

Oxidation and exhaustion of the developer.

Question 28

What causes discrete black lines to appear on the radiograph?

Answer 28

Bending the film or excessive pressure.

Question 29

What causes the black paper in the film packet to become stuck to the film?

Answer 29

A tear or break in the outer protective wrapping of the film packet.

Question 30

What produces thin black lines or smudges often in a pattern on the radiograph?

Answer 30

Static electricity.

Question 31

What is film fog?

Answer 31

The formation of a thin, cloudy layer that fogs or veils the film surface.

Question 32

What is film fog susceptible to?

Answer 32

Stray radiation.

Question 33

What conditions permit white light film fog?

Answer 33

A white light leak in the darkroom.

Question 34

Does radiographic film have an expiration date?

Answer 34

Yes.

Question 35

Can fluorescent watch faces and dials fog film?

Answer 35

Yes.