Chapter 38
Chapter 39
Chapter 40
Chapter 41
Chapter 42
100
Who discovered x-rays and in what year?
Who is William Conrad Roentgen (1895)
100
What are the two fundamental techniques for intraoral digital radiography?
What is direct and indirect imaging
100
What type of consent is necessary before a patient is exposed for dental images?
What is informed consent
100
What are the two techniques that can be used for exposing for exposing images?
What is the bisecting and paralleling techniques
100
Also known as the image layer, this is a three-dimensional horseshoe-shaped zone
What is the focal trough
200
What does ALARA stand for?
What is "as low as reasonably achievable"
200
This type of image is not visible before processing.
What is a latent image
200
What is meant by quality assurance?
What is a way of ensuring that everything possible is being done to produce high-quality diagnostic images
200
Why is it not recommended to have the patient hold the film or sensor during exposure?
What is holding the film exposes the patient's hand and finger to unnecessary radiation
200
If the tongue is not placed on the roof of the mouth, a ____________ shadow will be superimposed over the apices of the maxillary teeth.
What is radiolucent
300
What is density?
What is the overall blackness or darkness of a film
300
What number film is used for adult radiographs?
What is number 2
300
What is the coin test used to check?
What is the safelight test
300
What two errors occur when the vertical angulation is incorrect?
What is elongation and foreshortening
300
"Exaggerated smile line" is seen on a panoramic film when the patient's chin is tipped ___________
What is downward
400
What is the maximum permissible dose of radiation for occupationally exposed persons?
What is 5000 millirem or 5.0 rems/year (0.05 Sv/year)
400
What is the minimum distance between the safelight and the working area?
What is four feet away from the film and working area
400
What federal act requires persons who take radiographs to be trained and certified?
What is The Consumer-Patient Radiation Health and Safety Act
400
What means without teeth?
What is endentulous
400
What does CT stand for?
What is Computed tomography
500
Finish this sentence : "The shorter the wavelength of the x-ray, the __________ is its energy."
What is greater
500
An underdeveloped film may appear light if the developer solution is too _______.
What is cool
500
Image receptor positioning instruments that are placed in the patient's mouth are _____________ items that should be sterilized before reuse.
What is semicritical
500
What type of film fault occurs when the film is placed backwards in the mouth?
What is herringbone
500
What is the purpose of a grid?
What is reduces the amount of scatter radiation that reaches an extraoral film during exposure
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