Radiology Chapter 38 Exam Questions
and Answers
The 'guidelines for prescribing dental radiographs' issued by the American Dental
Association and the FDA recommend which of the following dental imaging procedures
for a pregnant patient? - Answer- radiographic imaging procedures do not need to be
altered because of pregnancy.
One of the rules of radiation protection is to never stand closer than_____ feet from the
x-ray - Answer- 6
Dental imaging: - Answer- refers to film-based images, refers to digitally produced
images, and detects conditions that might otherwise remain undetected.
Which is not true for electromagnetic radiation? - Answer- they travel at various speeds
A______ is a minute bundle of energy that has no weight or mass - Answer- photon
The ______ is the portion of the x-ray machine which supplies the electrons to produce
x-rays - Answer- cathode
If you change the exposure time of the x-ray unit, what is affected? - Answer- number of
x-rays produced
The _____ setting controls the penetrating power of x-ray beam - Answer- kilovolt
setting
A step-down transformer is necessary within the x-ray circuitry to: - Answer- boil off
electrons from the filament
Heat is reduced from the target by: - Answer- copper stem and insulating soil
Thermionic emission refers to the: - Answer- release of electrons from the tungsten
filament
The lead collimator is used to ________ of the primary beam - Answer- restrict the size
and the shape
The uses of dental images include detection of: - Answer- bone loss in its early stages
and Answers
The 'guidelines for prescribing dental radiographs' issued by the American Dental
Association and the FDA recommend which of the following dental imaging procedures
for a pregnant patient? - Answer- radiographic imaging procedures do not need to be
altered because of pregnancy.
One of the rules of radiation protection is to never stand closer than_____ feet from the
x-ray - Answer- 6
Dental imaging: - Answer- refers to film-based images, refers to digitally produced
images, and detects conditions that might otherwise remain undetected.
Which is not true for electromagnetic radiation? - Answer- they travel at various speeds
A______ is a minute bundle of energy that has no weight or mass - Answer- photon
The ______ is the portion of the x-ray machine which supplies the electrons to produce
x-rays - Answer- cathode
If you change the exposure time of the x-ray unit, what is affected? - Answer- number of
x-rays produced
The _____ setting controls the penetrating power of x-ray beam - Answer- kilovolt
setting
A step-down transformer is necessary within the x-ray circuitry to: - Answer- boil off
electrons from the filament
Heat is reduced from the target by: - Answer- copper stem and insulating soil
Thermionic emission refers to the: - Answer- release of electrons from the tungsten
filament
The lead collimator is used to ________ of the primary beam - Answer- restrict the size
and the shape
The uses of dental images include detection of: - Answer- bone loss in its early stages
