Chapter 39-Digital Imaging, Dental Film, and Processing Radiographs

_____ hardens the film emulsion during film processing.

Fixing

The silver halide crystals are located within which of the following layers of the radiographic film?

Gelatin that suspends the emulsion

When developer solution in an automatic processor is warmer than 83° F, the processed film will appear:

dark or black

The safest place to store unopened boxes of dental film is in the:

darkroom

The correct order of steps in manual film processing is:

develop, rinse, fix, wash

One reason for a lighter than normal radiograph is the:

developer solution is too weak

Each of the following is true about digitizing film-based radiographic images except:

digitized film-based images cannot be enhanced by computer software

The category of digital imaging similar to faxes and video equipment that uses a sensor with a cord attached to the computer is:

direct digital imaging

Clear spots on a processed film can be caused by:

fixer contacts film prior to processing

A plastic or metal film cassette holds and protects the extraoral film. During exposure, the side of the cassette must face the patient is the side.

front

Digital radiography requires less radiation than traditional radiography because the:

sensor is more sensitive to x-ray energy

All of the following are true statements about phosphor storage plate (PSP) imaging system imaging plates except they:

should be autoclaved

The charge-coupled device (CCD) in direct digital imaging sensors is made of:

silicon

Faster film speed would be associated with silver halide crystals, a emulsion, and presence of special radiosensitive dyes.

smaller; thinner

Fixer cutoff will result in a border.

straight black

All of the following are true statements about storage plates used with phosphor storage plate (PSP) imaging systems except that:

they utilize radio frequency transmission to transmit the image to the computer via radio waves

When placing a dental film in the patient's mouth, the white side is placed the dental x-ray tubehead, and the raised dot to the surface.

toward: occlusal or incisal

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

#2

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

4 feet

The ideal time and temperature for manual developing is:

5 minutes at 68" F

F-speed dental x-ray film reduces radiation exposure to the patient by_% compared with D-speed dental x-ray film.

60

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

Cephalometric

Green-sensitive extraoral film is used with cassettes that have which type of intensifying screen?

Rare earth

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

Rinn XCP instruments

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

Sudden temperature change between developer and water bath

Which of the following statements about duplicating film is not correct?

The emulsion side of the film appears shiny

When film emulsion interacts with x-rays, the result is:

a latent image

Positioning instruments in digital radiography:

assist in film placement and keep the patient's fingers from being exposed

When a film passes through fixer solutions before developing, the film will appear:

clear

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

intensifying screen

Automatic film processing requires than manual film processing does.

less equipment

Solutions should have been changed in the processor 1 week ago. Continuing to use exhausted developer will result in films.

light

The life of the automatic processer solutions is reduced rather than extended when:

more time has elapsed since the last complete change of processing solutions

When loading an extraoral film into the cassette prior to exposure, the:

procedure must be done in the darkroom

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

reduce film fogging