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ODU Dental Radiation Safety Certification Questions and Answers 100% Correct
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ODU Dental Radiation Safety Certification
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ODU Dental Radiation SafetyCertification
Who discovered x-rays? - answer Roentgen
Who is considered the first Radiology Instructor? – answer Raper
Who utilized a procedure as "setting the tubes"? - answer Kells
What is William H. Rollins known for? - answer First to publish radiation exposure
warnings
What is the prototype (model) of the tube used in today's x-ray machines? - answer
Coolidge Tube
What does "fast film" mean? - answer Requires *less* *radiation* to *produce* an
*image*
The process by which radiant energy removes an orbital electron from an atom is
called______? - answerionization
What type of radiation are dental x-rays? - answerEM (Electromagnetic)
Which source of radiation do x-rays fall under? - answerartificial (man-made)
List characteristics of x-radiation: - answer1.) Invisible
2.) Have NO: mass, weight, or electrical charge
3.) Travel in: waves of short length & high frequency, straight lines, at speed of light
(186,000 miles/sec)
4.) Particle concept: photons
5.) Wave concept: velocity, wavelength, and frequency
6.) Cause: ionization, fluorescence of certain chemicals, biological changes through
process of ionization
7.) Effect: film emulsion
8.) Diverge: from point of origin; cannot be focused to a point
The component of the dental x-ray machine where the on/off switch is locted is called
the_________? - answercontrol panel
The component of the dental x-ray machine that supports and suspends the tubehead is
called the_____? - answerExtension arm
, When electrons flow in one direction only along a conductor, the current is
called_______? - answerDirect Current
When electrons flow in one direction and then reverse to flow in the opposite direction,
the current is called______? - answerAlternating Current
The distance from the crest of one wave to the crest of the next wave is called______? -
answerWavelength
The ampere is a measurement of________? - answerThe number of electrons flowing
in the circuit (quantity)
The volt is a measurement of________? - answerThe electrical potential or force that
moves the electrons along the electrical conductor (quality)
What are the 4 requirements for the production of x-rays? - answer1. Vacuum
2. Source of Electrons
3. Target
4. Accelerating potential
The device that increases voltage for the tube circuit is called the_________? -
answerStep-up Transformer
The device that decreases the voltage for the filament is called the ________? -
answerStep-down Transformer
The negative portion of the vacuum tube is called the________? - answerCathode
The positive portion of the vacuum tube is called the __________? - answerAnode
The cathode is composed of the _______ and the _______? - answerFilament &
Focusing Cup
The anode is composed of the _______ and the _______? - answerTarget & Copper
Stem
The process of removing low energy wavelengths from the x-ray beam is ________? -
answerfiltration
If a dental x-ray machine is capable of being set at 70 kVp and above the filtration must
be_______? - answer2.5 mm thickness of aluminum
The lead collimator functions to ________? - answerrestrict the size and/or shape of the
x-ray beam.
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