Foundations of Radiography, radiographic equipment, and radiation safety
Man credited with the discovery of x-radiation in 1895
Who is Wilhelm Conrad Roentgen
The first step in manual processing of film
What is development?
The concept that a patient must receive complete disclosure
What is informed consent?
May occur in the paralleling technique, due to the increased distance required between the object and the receptor.
Image magnification
This may appear in an extraoral radiograph if a patient does not remove all radiodense objects from the head and neck region prior to exposure, due to them being penetrated twice by the x-ray beam.
What is a ghost image?
The heart of the x-ray generating system
what is an x-ray tube?
The newest and fastest film speed available, recommended by the ADA
What is F speed?
What is Coin Test
In the paralleling technique, the position or direction of the receptor in relationship to the long axis of the tooth
What is parallel?
A single extraoral image which shows a wide view of the maxilla, mandible and surrounding structures
What is a panoramic image?
Its purpose is to supply the electrons necessary to generate x-rays
The cathode
This type of image is stored within the silver halide crystals of traditional film
What is the latent image?
Uses a metal object to check for shades of gray and QA
What is Stepwedge test
In the paralleling technique, this is the direction of the central ray in relationship to the long axis of the tooth.
What is perpendicular?
This part of the panoramic x-ray machine is piece of lead with an opening shaped like a narrow vertical slit
What is the collimator?
Body structures that which x-rays can easily pass through, and appear "dark" on an image
What is Radiolucent?
This type of film is used only in a darkroom setting and is never exposed to x-radiation
what is duplicating film
This is a major source of cross contamination during dental imaging procedures
What is contaminated film, PSP packet or sensor
This technique may be used as an alternative method in special circumstances, when it is not possible to use the paralleling technique
What is the bisecting technique?
This type of images may not be as defined or sharp as intraoral images, and therefore are typically used in conjunction with the intraoral images
What are extraoral images?
Doing this may increase the x-ray beam intensity without altering settings of the x-ray machine.
What is decreasing the source-to-film distance?
In this type of imaging system the image receptor is a thin, flexible plate, the size of a conventional x-ray film that has been coated with phosphor crystals
what is phosphor storage plate imaging
Who can diagnose the radiographs?
Only the DDS
This angulation remains the same whether you are using the paralleling or the bisecting technique
What is Horizontal angulation?
The anterior teeth in a panoramic radiograph may appear this way if a patient is placed too far ahead of the folcal trough.
What is skinny?