Deck 39: Digital Imaging, Dental Film, and Processing Radiographs

Question 1

When placing a dental film in the patient's mouth,the white side is placed ____ the tube and the raised dot to the ____.

A)toward; apical
B)toward; occlusal or incisal
C)away; apical
D)away; occlusal or incisal

Answer 1

toward; occlusal or incisal

Question 2

Automatic film processing requires _____ than manual film processing.

A)more time
B)less equipment
C)more equipment
D)more space

Answer 2

less equipment

Question 3

A film cassette made of plastic or metal is used to hold and protect the extraoral film.During exposure,the _____ side of the cassette must always face the patient.

A)front
B)back
C)right
D)left

Answer 3

front

Question 4

The CCD found in direct digital imaging sensors is made of:

A)silicon.
B)phosphor.
C)tungsten.
D)silver halide.

Question 5

Positioning instruments in digital radiography:

A)assist in film placement.
B)keep the patient's fingers from being exposed.
C)should not be used.
D)both a and b.

Question 6

The purpose of the lead foil in the dental film packet is to:

A)provide stiffness to the film.
B)reduce film fogging.
C)absorb the primary beam.
D)make the packet more flexible and resilient.

Question 7

Which of the following time and temperature errors will result in reticulation of the film emulsion?

A)Inadequate development time
B)Developer solution too hot
C)Sudden temperature change between developer and water bath
D)Inaccurate timer or thermometer

Question 8

Film speed is determined by the:

A)thickness of silver bromide salt.
B)thickness of cellulose acetate base.
C)size of the silver bromide crystals.
D)both a and c.

Question 9

Which of the following is an extraoral film that is placed outside the mouth during x-ray exposure?

A)Periapical
B)Bite-wing
C)Panoramic
D)Occlusal

Question 10

A(n) _____ is a device that intensifies or increases the effect of the radiation and decreases the amount of exposure time needed when exposing an extraoral radiograph.

A)screen film
B)film cassette
C)intensifying screen
D)nonscreen film

Question 11

Which category of digital imaging is similar to faxes and video equipment,which use a sensor with a cord that is attached to the computer?

A)Computed radiograph programs
B)Indirect digital radiography
C)Direct digital radiography
D)None of the above

Question 12

_____ hardens the film emulsion during film processing.

A)Rinsing
B)Developing
C)Fixing
D)Washing

Question 13

Which is not true of image plates?

A)They need to be protected in the patient's mouth with barriers.
B)They should be autoclaved.
C)They require care not to scratch when handling.
D)They are positioned in the mouth like dental film.

Question 14

Which is not true of storage plates used with (PSP)?

A)They are made of phosphor.
B)The latent image will stay on the plate for hours.
C)They should not be exposed to light before scanning.
D)They are disposable.

Question 15

Dental film holders,used to position and hold the dental x-ray films in the patient's mouth,include which of the following?

A)PID
B)XCP and disposable block
C)Eezee-Grip and EndoRay
D)Both b and c

Question 16

Which is not true of duplicating film's emulsion?

A)It is only on one side.
B)It appears shiny.
C)It appears dull.
D)It is exposed by light.

Question 17

The radiographic image is located within the _____ of the radiographic film.

A)acetate film base
B)adhesive layer that attaches the emulsion to the film base
C)gelatin that suspends the emulsion
D)protective layer that protects the emulsion surface

Question 18

The _______ is the safest place to store unopened boxes of dental film.

A)darkroom
B)furnace room
C)refrigerator
D)treatment room

Question 19

Developer cutoff will result in a _____ border.

A)straight white
B)straight black
C)curved white
D)curved black

Question 20

The most commonly used film size for adult intraoral dentistry is size:

A)#0.
B)#2.
C)#3.
D)#4.

Question 21

Digital radiography requires less radiation than traditional radiography because the:

A)exposure time is increased.
B)sensor is smaller.
C)sensor is more sensitive to x-ray energy.
D)sensor is attached to the computer.

Question 22

What is the cause of white spots on a processed film?

A)Static electricity
B)Solutions are too warm
C)Fixer contacts film prior to processing
D)Drops of developer

Question 23

Which is not true of digitizing film-based radiographs?

A)The process is similar to other film duplication.
B)Desktop scanners capture the light signal.
C)It duplicates the same detail as the original film.
D)All of the above are true.

Question 24

A ______image is produced when x-rays interact with the film emulsion.

A)visible
B)distorted
C)latent
D)none of the above

Question 25

Which is the correct order of steps in manual film processing?

A)Fix, rinse, develop, wash
B)Develop, rinse, fix, wash
C)Fix, wash, rinse, wash
D)Rinse, develop, fix, wash

Question 26

The gallon of fixer is mistaken for developer,and developer is mistakenly thought to be fixer.As a result,films pass through the fixer first,then the developer.Each film will now be:

A)clear.
B)completely black.
C)gray.
D)yellowish-brown.

Question 27

Which of the following will affect the life of the processing solutions?

A)Number of films processed
B)Time elapsed since last change
C)Size of films processed
D)All of the above

Question 28

When loading the film into the cassette before exposure (in extraoral radiography),the:

A)film comes preloaded in the cassette.
B)procedure must be done in the darkroom.
C)film may be placed in the holder outside the darkroom.
D)film does not need an intensifying screen.

Question 29

Solutions should have been changed in the processor one week ago.Continuing to use exhausted developer will result in ____ films.

A)dark
B)light
C)white
D)clear

Question 30

The film is lighter than normal; what is the probable cause?

A)The developer solution is too weak.
B)The developer solution is too warm.
C)The fixer solution is too weak.
D)The film was not properly rinsed.

Question 31

The ideal time and temperature for manual developing is:

A)45 seconds at 85° F.
B)5 minutes at 65° C.
C)5 minutes at 68° F.
D)5 minutes at 60° F.

Question 32

In the automatic processor,the developing solution is normally 81° F to 83° F.If it gets hotter,how will the films look?

A)Dark or black
B)Gray
C)Clear
D)Light

Question 33

Extraoral film is:

A)not sensitive to light.
B)less sensitive to light than intraoral film.
C)just as sensitive to light as intraoral film.
D)more sensitive to light than intraoral film.

Question 34

The recommended distance between the safelight and where the films are unwrapped is:

A)2 feet.
B)4 feet.
C)6 feet.
D)as close as possible.