Chapter 39: Radiology Review

The life of the processing solutions is affected by

All of the above (# of films processed, the time elapsed since last change, the size of films processed) A

Positioning instruments in digital radiography

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

_____ 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 is an automatic processor is warmer than 83 degrees 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 mprocessing is

develop, rinse, fix, wash

One reason for a lighter than normal radiograph is the

developer solution is too weak

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 radiography

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 the must face the patient is the _____ side.

front

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

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

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

the emulsion sided of the film appears shiny

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

they utilize raido 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 tube and the raised dot to the ____.

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 degrees F

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

60

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

Both B and C.

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

Cephalometric

Fixer cutoff will result in a _______ border.

Straight black.

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

Sudden temperature change between developer and water bath

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

a latent image

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

clear

All of the following are true statements about digitizing film-based radiographic images except

it duplicates in the same detail as the original film

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

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

procedure must be done in the darkroom

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

rare earth

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

reduce film fogging