RHS Exam Questions and Answers 100%
Pass
What are x-rays - ANSWER-radiant energy waves that are produced, charged, and emitted from
a common center in the dental radiation tube.
Question: How are x-rays generated? - ANSWER-The X-ray tube, also known as a vacuum tube,
produces X-rays. The vacuum tube contains these seven elements of note: cathode, filament,
anode, focal spot, aluminum filter, collimator, aperture
Question: what does the cathode do? - ANSWER-electrode in the X-ray tube that is the electron
source.
Question: What does the filament do? - ANSWER-tungsten coil in the cathode focusing cup that
heats up to generate the electrons.
Question: what does the anode do? - ANSWER-the target for the electron cloud that converts
the electron force into photons.
, Question: what does the focal spot do? - ANSWER-target area on the anode where rays are
projected to make the primary beam, or central beam; the smaller focal spot produces a better
image.
Question: what does the aluminum filter do? - ANSWER-aluminum disks that are placed
between the collimator attachment and the exit window of the tube to absorb weak radiation.
Question: what does the collimator do? - ANSWER-a lead device inside the X-ray tubehead used
to restrict the size and shape of the X-ray beam, helping to avoid stray radiation.
Question: What does the aperture do? - ANSWER-opening in the lead collimator disk that
regulates the size of the primary beam.
Question: What is PID? - ANSWER-position indicating device
Question: What is the purpose of a periapical radiograph? - ANSWER-size 0 (pedodontic size), 1
(adult anterior), or 2 (adult anterior and posterior); used for the intraoral periapical view of the
entire tooth or teeth in a given area along with adjacent tissues and oral structures.
Question: What is the purpose of a bitewing radiograph? - ANSWER-film used to record crown
and interproximal views of both arches while in occlusion; used intraorally with attached bite tab.
Pass
What are x-rays - ANSWER-radiant energy waves that are produced, charged, and emitted from
a common center in the dental radiation tube.
Question: How are x-rays generated? - ANSWER-The X-ray tube, also known as a vacuum tube,
produces X-rays. The vacuum tube contains these seven elements of note: cathode, filament,
anode, focal spot, aluminum filter, collimator, aperture
Question: what does the cathode do? - ANSWER-electrode in the X-ray tube that is the electron
source.
Question: What does the filament do? - ANSWER-tungsten coil in the cathode focusing cup that
heats up to generate the electrons.
Question: what does the anode do? - ANSWER-the target for the electron cloud that converts
the electron force into photons.
, Question: what does the focal spot do? - ANSWER-target area on the anode where rays are
projected to make the primary beam, or central beam; the smaller focal spot produces a better
image.
Question: what does the aluminum filter do? - ANSWER-aluminum disks that are placed
between the collimator attachment and the exit window of the tube to absorb weak radiation.
Question: what does the collimator do? - ANSWER-a lead device inside the X-ray tubehead used
to restrict the size and shape of the X-ray beam, helping to avoid stray radiation.
Question: What does the aperture do? - ANSWER-opening in the lead collimator disk that
regulates the size of the primary beam.
Question: What is PID? - ANSWER-position indicating device
Question: What is the purpose of a periapical radiograph? - ANSWER-size 0 (pedodontic size), 1
(adult anterior), or 2 (adult anterior and posterior); used for the intraoral periapical view of the
entire tooth or teeth in a given area along with adjacent tissues and oral structures.
Question: What is the purpose of a bitewing radiograph? - ANSWER-film used to record crown
and interproximal views of both arches while in occlusion; used intraorally with attached bite tab.
