Chapter 9 DT book

The controlling factor in the production of electrons available for radiographs is”

Kilovolt power

Aluminum disks placed between the collimator and the tube window to remove weak radiation are":

Filters

The tube head area where the central beam or primary ray is projected is the:

Focal Spot

The positive pole in the tube head that serves as a target for electron barrage is the:

Anode

The abbreviation for the team milliampere is:

mA

The central beam of radiation emitting from the tube head or PID is:

Primary radiation.

The time or duration of interval when the current will pass through the x-ray tube is the:

Exposure time

The distance between the anode target and the object to be radiographed is called the:

Target-object distance.

Cummulative effect is the:

effect of continual exposure to radiation.

The collar of a RINN PID used for endodontic work is:

Green

The ability of x-rays to penetrate and possibly ionize body tissues is called:

Sensitivity

Radiation overdose that causes temporary redness of the skin is:

Erythema dose.

Which type of film would be used to view the tooth crown, roots, and surrounding tissues.

Periapical

Another term for bite-wing exposure is:

Interproximal radiograph.

A size 4 radiograph packet would contain which film?

Occlusal

Which of the following is not considered a basic safety precaution in exposure of radiographs?

Safelight

Which of the following radiographic films is of particular use in orthodontics?

Cephalometric film

Variations of black and white colors on a radiograph are considered an example of:

Contrast

Another name for the paralleling technique for radiographic exposures is:

Right-angle technique

If the PID is aimed in an upward position, it is considered to be which angulation.

Negative.

Cathode

Negative pole in tube, source of electrons.

Sensitivity of rays

Ability of x-rays to penetrate and possibly ionize tissue.

Indirect digital x-ray

Conversion of a processed radiograph to a digital workstation.

Detail

Point-to-point delineation or view of tiny x-ray structures.

Radiolucent

Ability of substance to permit ray passage, making film dark.

Cephalometric

Radiograph of head used in ortho, or prosthodontics.

Definition

Sharpness and clarity of an image outline on radiograph.

Sagittal plane

Imaginary line dividing the head into right and left sides

Ala-tragus line.

Imaginary line to direct placement of PID during exposures.

Edentulous survey.

Radiographs of patients without teeth.

Aperture or port

Opening in lead collimator to regulate beam size.

Reticulation

Crackling of film emulsions surface caused by temperature change.

Ion

Particle carrying electric charge

Elongation

Tooth structure appears longer than anatomical size.

Biteblock

Device used to maintain films in the mouth during exposure.