Image Receptors

In direct digital imaging, the photostimulable phosphor (PSP) plate is used as the image receptor and consequently is used to produce an instantaneous radiographic image. In indirect imaging, the sensor is used as the image receptor.

Both Statements are False

A double-film packet requires more exposure time than the single-film packet. This increases the overall x-radiation exposure to the patient.

Both Statements are True

All intraoral dental radiology film have an orientation dot on the white side of the film. This convex-concave area indicates the side of the film that should be facing the tooth.

Both Statements are True

Duplicating film does not have an orientation dot on the emulsion to identify the patient's right or left side. Intensifying screens do not have an orientation dot on the screen to identify the patient's right or left side.

Both Statements are True

Which of the following is a direct digital sensor used in dental digital imaging?

Charged Coupled Device

A film that has been fogged will have:

Decrease Contrast

All of the following may cause film fog EXCEPT one. Which one is the EXCEPTION?

Emulsion of the Silver Halide

Identify the film that will reduce the most radiation exposure.

F Film

In indirect digital imaging, the sensor is used as the image receptor.

False

Intraoral film packets come in five basic sizes. the higher the designated number, the smaller the film packet.

False

The main advantage of intensifying screens is:

Less radiation to the patient

The dental x-ray film packet is composed of all of the following EXCEPT one. Which one is the EXCEPTION?

Outer Cotton package wrapper

Film speed is determined by all of the following EXCEPT one. Which one is the EXCEPTION?

The fluorescence coating

Rare earth intensifying screens differ from calcium tungstate screens in all of the following characteristics EXCEPT one. Which one is the EXCEPTION?

The image Definition

The lead-foil backing is included in the intraoral film packet:

To Absorb Back-scattered Radiation

Film cassettes can be either rigid or flexible.

True

The plot of film density versus exposure time is called the H & D curve.

True

When the x-ray photons strike the phosphors of the intensifying screen light, photons are produced.

True

Duplicating film:

has a direct positive emulsion

Taking films to be duplicated out of the mounts:

improves the detail of the duplicates