Image Characteristics
What term describes the portion of an X-ray image that appears dark?
What is radiolucent
What are the two types of dental x-ray machines?
What are intraoral and extraoral machines
What is the primary advantage of digital imaging over traditional imaging?
What is the ability to produce images almost instantly on a computer monitor.
What are the four basic components of dental x-ray film?
What are film base, adhesive layer, film emulsion, and protective layer.
What is the overall darkness or blackness of a dental image called?
What is density
What component of the intraoral x-ray machine suspends and allows positioning of the tubehead?
What is the extension arm
Name the two main types of digital imaging.
What are direct digital imaging and indirect digital imaging.
What is the latent image in dental radiography?
What is the pattern formed by stored energy in the silver halide crystals after exposure.
What type of contrast shows only two densities, black and white?
What is short-scale contrast
Name one type of beam alignment device used in dental radiography.
What is Rinn XCP
What does a charge-coupled device (CCD) do in digital imaging?
What is it captures the dental image.
What type of film is used to examine the entire tooth and supporting bone?
What is periapical film
Which geometric characteristic is influenced by the focal spot size?
What is sharpness
What is the purpose of the lead foil sheet in an intraoral film packet?
What is to shield the film from back scattered radiation
How long does it typically take for a digital image to be recorded on a computer monitor?
What is between 0.5 to 120 seconds
What does F-speed film provide compared to D-speed film?
What is less radiation exposure to the patient.
Name the three influencing factors that affect image sharpness.
What are focal spot size, film composition, and movement
What is a common feature of portable intraoral units?
What is they allow for exposures outside of the dental office
What are two disadvantages of digital imaging?
What are initial setup costs and sensor size and thickness
Why is duplicating film used in dental radiography?
What is to create copies of existing images.