Dental Radiology Final Exam
Review/217 Questions and
Answers/Verified
A photographic image produced on film by the passage of x-rays
through teeth and related structures - -radiograph, dental
-A beam of energy that has the power to penetrate substances and
record image shadows on photographic film. - -x ray
-A form of energy carried by waves or a stream of particles - -radiation
-Any person who positions, exposes, and processes x-ray film - -
radiographer, dental
-The making of radiographs by the exposure of film to x-rays - -
radiography
-A high-energy radiation produced by the collision of a beam of
electrons with a metal target in an x-ray tube - -radiation
-The science or study of radiations as used in medicine. - -radiology
-The making of radiographs of the teeth and adjacent structures by the
exposure of film to x-rays - -radiography, dental
-A picture on film produced by the passage of x-rays through an object
or body. - -radiograph
-Coolidge - -developed first x ray tube
-Fitzgerald - -Introduced long-cone paralleling technique
-Kells - -exposed first radiograph in united states with live patients
-McCormack - -Used paralleling technique in practical dental
radiography
-Roentgen - -discovered x rays
-Walkhoff - -exposed first dental radiograph
-Which of the following electrons has the greatest binding energy? - -K
shell electrons
the K shell electron is located closest to the nucleus and has the highest
energy level and the greatest binding energy. The M, N, and L shell
electrons are located farther from the nucleus.
, -What type of electrical charge does the electron carry? - -negative
charge
-Which term describes two or more atoms that are joined by chemical
bonds? - -molecule
-Which of the following describes ionization? - -Ionization is described
as the production of ions when an atom loses an electron
-Which term describes the process by which unstable atoms undergo a
spontaneous disintegration in an effort to attain a more balance nuclear
state? - -radioactivity
-Which of the following is NOT a type of particulate radiation? - -
nucleons
-Which of the following is NOT a type of electromagnetic radiation? - -
electrons
-Which of the following is a CORRECT statement? - -x-rays have more
energy than visible light
-Which of the following regulates the flow of electrical current to the
filament of - -low-voltage circuit
-Which of the following is used to increase the voltage in the high-
voltage circuit? - -step-up transformer
The transformers either increase or decrease the voltage in an electrical
circuit; the step-up transformer increases the incoming voltage to the
level required.
-Which of the following is the location in which x-rays are produced? - -.
positive anode
X-rays are produced at the anode that is the positive electrode inside
the x-ray tube.
-Which of the following is the location in which thermionic emission
occurs? - -negative cathode
Thermionic emission occurs at the cathode that is the negative
electrode inside the x-ray tube.
-Which of the following accounts for 70% of all the x-ray energy
produced at the anode? - -general radiation
-Which of the following occurs only at 70 kVp or higher and accounts for
a very small part of the x-rays produced in the dental x-ray machine? - -
characteristic radiation
, -Which of the following describes primary radiation? - -radiation that
exits the tubehead
-Which of the following describes scatter radiation? - -radiation that has
been deflected from its path by interaction with matter.
Radiation that has been deflected from its path by the interaction with
matter is scatter radiation.
-Which of the following type of scatter occurs most often with dental x-
rays? - -compton
-In dental radiography, the quality of the x-ray beam is controlled by: - -
kVp
-Identify the kilovoltage range for most dental x-ray machines: - -65-
100 kV
The average range for most dental x-ray machines is 65-100kV. Lower
settings may not penetrate the tissue adequately and cause high
contrast images; higher settings increase the radiation the patient
receives and cause low contrast images.
-A higher kilovoltage produces x-rays with: - -greater energy levels
shorter wavelengths
more penetrating ability
An increase in kilovoltage increases the quality of the beam. It will
demonstrate greater energy and shorter, more penetrating
wavelengths.
-Identify the unit of measurement used to describe the amount of
electric current flowing through the x-ray tube: - -ampere
-Radiation produced with high kilovoltage results in: - -short
wavelengths
An increase in kilovoltage increases the quality of the beam. It will
demonstrate greater energy and shorter, more penetrating
wavelengths.
-In dental radiography, the quantity of radiation produced is controlled
by: - -mA, exposure time
Kilovoltage peak affects the quality of the x-ray beam. The quantity of
the x-rays produced is controlled by milliamperage and exposure time.
-Increasing milliamperage results in an increase in: - -temperature of
the filament,number of x-rays produced
Milliamperage has no effect on the quality of the beam. Milliamperage
does regulate the temperature of the cathode filament, and it does
affect the quantity of x-rays produced.
-Identify the milliamperage range for dental radiography: - -7-15 mA
Review/217 Questions and
Answers/Verified
A photographic image produced on film by the passage of x-rays
through teeth and related structures - -radiograph, dental
-A beam of energy that has the power to penetrate substances and
record image shadows on photographic film. - -x ray
-A form of energy carried by waves or a stream of particles - -radiation
-Any person who positions, exposes, and processes x-ray film - -
radiographer, dental
-The making of radiographs by the exposure of film to x-rays - -
radiography
-A high-energy radiation produced by the collision of a beam of
electrons with a metal target in an x-ray tube - -radiation
-The science or study of radiations as used in medicine. - -radiology
-The making of radiographs of the teeth and adjacent structures by the
exposure of film to x-rays - -radiography, dental
-A picture on film produced by the passage of x-rays through an object
or body. - -radiograph
-Coolidge - -developed first x ray tube
-Fitzgerald - -Introduced long-cone paralleling technique
-Kells - -exposed first radiograph in united states with live patients
-McCormack - -Used paralleling technique in practical dental
radiography
-Roentgen - -discovered x rays
-Walkhoff - -exposed first dental radiograph
-Which of the following electrons has the greatest binding energy? - -K
shell electrons
the K shell electron is located closest to the nucleus and has the highest
energy level and the greatest binding energy. The M, N, and L shell
electrons are located farther from the nucleus.
, -What type of electrical charge does the electron carry? - -negative
charge
-Which term describes two or more atoms that are joined by chemical
bonds? - -molecule
-Which of the following describes ionization? - -Ionization is described
as the production of ions when an atom loses an electron
-Which term describes the process by which unstable atoms undergo a
spontaneous disintegration in an effort to attain a more balance nuclear
state? - -radioactivity
-Which of the following is NOT a type of particulate radiation? - -
nucleons
-Which of the following is NOT a type of electromagnetic radiation? - -
electrons
-Which of the following is a CORRECT statement? - -x-rays have more
energy than visible light
-Which of the following regulates the flow of electrical current to the
filament of - -low-voltage circuit
-Which of the following is used to increase the voltage in the high-
voltage circuit? - -step-up transformer
The transformers either increase or decrease the voltage in an electrical
circuit; the step-up transformer increases the incoming voltage to the
level required.
-Which of the following is the location in which x-rays are produced? - -.
positive anode
X-rays are produced at the anode that is the positive electrode inside
the x-ray tube.
-Which of the following is the location in which thermionic emission
occurs? - -negative cathode
Thermionic emission occurs at the cathode that is the negative
electrode inside the x-ray tube.
-Which of the following accounts for 70% of all the x-ray energy
produced at the anode? - -general radiation
-Which of the following occurs only at 70 kVp or higher and accounts for
a very small part of the x-rays produced in the dental x-ray machine? - -
characteristic radiation
, -Which of the following describes primary radiation? - -radiation that
exits the tubehead
-Which of the following describes scatter radiation? - -radiation that has
been deflected from its path by interaction with matter.
Radiation that has been deflected from its path by the interaction with
matter is scatter radiation.
-Which of the following type of scatter occurs most often with dental x-
rays? - -compton
-In dental radiography, the quality of the x-ray beam is controlled by: - -
kVp
-Identify the kilovoltage range for most dental x-ray machines: - -65-
100 kV
The average range for most dental x-ray machines is 65-100kV. Lower
settings may not penetrate the tissue adequately and cause high
contrast images; higher settings increase the radiation the patient
receives and cause low contrast images.
-A higher kilovoltage produces x-rays with: - -greater energy levels
shorter wavelengths
more penetrating ability
An increase in kilovoltage increases the quality of the beam. It will
demonstrate greater energy and shorter, more penetrating
wavelengths.
-Identify the unit of measurement used to describe the amount of
electric current flowing through the x-ray tube: - -ampere
-Radiation produced with high kilovoltage results in: - -short
wavelengths
An increase in kilovoltage increases the quality of the beam. It will
demonstrate greater energy and shorter, more penetrating
wavelengths.
-In dental radiography, the quantity of radiation produced is controlled
by: - -mA, exposure time
Kilovoltage peak affects the quality of the x-ray beam. The quantity of
the x-rays produced is controlled by milliamperage and exposure time.
-Increasing milliamperage results in an increase in: - -temperature of
the filament,number of x-rays produced
Milliamperage has no effect on the quality of the beam. Milliamperage
does regulate the temperature of the cathode filament, and it does
affect the quantity of x-rays produced.
-Identify the milliamperage range for dental radiography: - -7-15 mA
