Dental Radiology Final Quiz (60)

Questions about diagnosis must be answered only by the

Increase in voltage, electrons move from cathode to anode with more speed, striking the target with

What causes overdeveloped, dark film?

Wilhelm Roentgen discovered the x-ray on which date?

If the film clears in 2 minutes, the chemistry is of adequate strength

Decisions about the number, type, and frequency of dental images are determined by the dentist based on

One gray is equivalent to

A film-screen contact test is used to test the cassette holder for extraoral films

The film emulsion is composed of a homogenous mixture of

The periapical intraoral image examination is used to examine

Image procedures do not need to be altered because of pregnancy

If the processed film appears clear with a slight green tint, the film is fresh and has been properly stored protected

A total of ____ images may be included in the CMS.

If informed consent is not obtained from a patient before the exposure of dental images, a patient may legally claim

Irregularities in lattice structure of the exposed crystal, known as sensitivity specks, attract gold atoms

Current, fast radiographic film requires 98% less exposure time, than the initial exposure times used in 1920.

CMS used when a new adult presents clinical evidence of generalized dental disease or history of extensive treatment

The Consumer-Patient Radiation Health and Safety Act outlines requirements for the

According to the text, ______ is one of the most important uses of dental images

The clearing test is used to monitor

The optimal temperature for the developer solution is

An increased object-receptor distance results in increased image

Aluminum filters are used to remove what kind of x-rays?

In a patient without teeth, 13 images are usually sufficient to cover the edentulous areas

To conduct the coin test the film and coin need to be exposed for 3 or 4 minutes

A qualified technician must calibrate dental x-ray equipment to ensure consistent x-ray

Cathode rays are derived from

(Ionization) An atom that gains an electron has a ___ charge; however an atom that loses an electron has a ___charge

Hydroquinone, one of the developing agents, is inactive below 60 degrees

The PID is an extension of the tubehead

A rectangular collimator significantly reduces patient exposure

An intensifying screen is a smooth plastic sheet coated with minute fluorescent crystals known as phosphors

A reference radiograph is used to evaluate fixer strength

Periapical images must show the entire crowns and roots of the teeth examined, 2.0 to 3.0 mm beyond the root apices

Added filtration in the dental x-ray tubehead results in

The quantity of x-rays is controlled by

The latent image is stored by the gelatin in dental x-ray film

If densities seen on the test film appear lighter than those on the reference radiographs, developer solution is strong

Within the x-ray tube, electrons are generated by the tungsten filament in the anode.

The ALARA concept stands for radiation being

An XCP is a brand of sensor

Identify errors in x-rays by completely deleting the errors

Which cells are more radiosensitive than bone, muscle or nerve?

The film base is 0.2 mm thick

Elon generates the many shades of gray seen on a dental radiograph

Safelighting can be checked with the

The Consumer-Patient Radiation Health and Safety Act is a federal law

An increased target-receptor distance can compensate for image magnification

To conduct a film-screen test, the wire mesh test object is placed on the bottom of the loaded cassette

To create a reference radiograph the film, developer, and fixer must all be used

To conduct the film-screen contact test, the PID should have a

Thermionic emission of electrons occurs at the tungsten filament in the

Total dose refers to the quantity of radiation received or the total amount of radiation energy absorbed.

Inherent filtration in the dental x-ray tubehead includes aluminum filters.

When kilovolt peak is increased, a lower energy x-ray beam with decreased penetrating ability results.

Milliamperage controls the number of electrons produced in the electron cloud.

developer solution is depleted if density on daily radiograph differs from the standard by more than two steps

The bite-wing receptor is used in the interproximal examination

The purpose of the lead foil sheet found within the film packet is to shield the film from

To conduct the film-screen contact test, the PID should have a 20-inch target-film distance.