Rad 102 Radiographic Imaging and
Exposure- Final Exam Review
X-rays have which of the following properties? - ANS-electrical and magnetic
Inside the x-ray tube envelope you will find: - ANS-vacuum
Which of the following is an accurate description of high energy photons? - ANS-short
wavelength and high frequency
The _______ is the portion of the x-ray tube that contains the filament. - ANS-cathode
The cathode filament is made of: - ANS-tungsten
The frequency of a wave is the number of waves passing a given point per given unit of
time. Frequency is measured in: - ANS-hertz
_____________ is the phenomenon that occurs around the filament during thermionic
emission and prevents the further escape of electrons from the filament. - ANS-Space
charge effect
The positive side of the x-ray tube is the: - ANS-anode
The maximum speed the rotating anode will typically achieve is ______ rpm. - ANS-
10,000
The letter "x" in x-rays is the symbol for: - ANS-the unknown
The distance between two successive crests of a sine wave is known as: - ANS-
wavelength
What is the name of the device in a rotating anode x-ray tube that turns the rotor? -
ANS-Stator
What is defined as the production of an x-ray photon by a collision between the incident
electron and a K-shell electron of the tungsten atom? - ANS-Characteristic interaction
_______ is the boiling off of electrons from the filament when current is applied. - ANS-
Thermionic emission
,What process describes x-ray production following the incoming electron electron
ejecting an inner shell electron? - ANS-Characteristic
The actual flow of electrons from cathode to anode within the x-ray tube is known as: -
ANS-tube current
Which of the following terms could be defined as the instantaneous production of light
only during an interaction between a type of energy and some element or compound? -
ANS-Fluorescence
With a standard x-ray tube, ______________% of the x-ray beam produced with 90 kVp
is the result of bremsstrahlung interactions. - ANS-85
Filament current is approximately: - ANS-3 to 5 A
Barium platinocyanide was the: - ANS-fluorescent material that glowed when the tube
was energized
During x-ray production, the energy of the moving electrons is converted into: - ANS-
electromagnetic energy
(T/F) When an electron from the L-shell of the tungsten atom is ejected from its orbit by
a projectile electron, high-energy x-ray photons are produced. - ANS-False, very low
energy x-rays are produced when an L-shell electron is ejected from its orbit.
What type of tube was Roentgen working with in his lab when x-rays were discovered? -
ANS-Crookes tube
In a dual-focus tube, how many filaments are energized at any one-time during x-ray
production? - ANS-One
What is the correct description of the relationship between the wavelength and
frequency of the x-ray photon? - ANS-Frequency and wavelength are inversely related
A _______ is a small, discrete bundle of energy - ANS-Photon/Quantum
An x-ray beam that has photons with many different energies is: - ANS-heterogeneous
X-ray can: - ANS-- penetrate the human body
- be absorbed in the human body
- change direction in the human body (scattering)
(T/F) X-ray photons travel at the speed of light in a vacuum. - ANS-True
When were x-rays discovered? - ANS-November 8, 1895
, The device that receives the radiation leaving the patient is the: - ANS-image receptor
_____ results in the process of image formation, whereby the x-ray beam interacts with
the anatomic tissue, and a portion of the beam passes through the part and strikes the
image receptor. - ANS-Differential absorption
_____ is the loss of some of the energy from the x-ray beam as it passes through the
tissue being imaged. - ANS-Attenuation
The photoelectric effect involves the removal (ejection) of an electron. This process of
removing an electron from an atom is known as: - ANS-ionization
When the x-ray photon travels completely through the part without any interaction, it is
called: - ANS-transmission
When the x-ray photon strikes an atom within the tissue being imaged and loses all of
its energy to an inner shell electron of that atom, the photon is said to have been _____.
- ANS-absorbed
When the x-ray photon strikes an atom within the tissue being imaged and loses only
part of its energy to an outer shell electron of that atom, the photon is said to have been
_____. - ANS-scattered
The interaction between x-ray photons and tissue that results in production of a
secondary x-ray photon is the: - ANS-photoelectric interaction
When the entering x-ray photon loses energy and changes its path of travel as a result
of interacting with an atom, the interaction is known as the: - ANS-Compton effect
The outer shell electron that is ejected during the Compton interaction is also known as
a: - ANS-secondary electron/Compton electron
Interactions of high-energy x-rays (energies beyond the diagnostic range) with tissue
include: - ANS-pair production and photodisintegration
Interactions of low-energy x-rays (energies below the diagnostic range) with tissue
include: - ANS-coherent scattering
The x-ray beam that leaves the patient in the direction of the image receptor is often
referred to as: - ANS-remnant/exit radiation
If scattered photons are absorbed within the anatomic tissue, they: - ANS-contribute to
the radiation exposure of the patient and do not contribute and useful information about
the anatomic part of interest
Exposure- Final Exam Review
X-rays have which of the following properties? - ANS-electrical and magnetic
Inside the x-ray tube envelope you will find: - ANS-vacuum
Which of the following is an accurate description of high energy photons? - ANS-short
wavelength and high frequency
The _______ is the portion of the x-ray tube that contains the filament. - ANS-cathode
The cathode filament is made of: - ANS-tungsten
The frequency of a wave is the number of waves passing a given point per given unit of
time. Frequency is measured in: - ANS-hertz
_____________ is the phenomenon that occurs around the filament during thermionic
emission and prevents the further escape of electrons from the filament. - ANS-Space
charge effect
The positive side of the x-ray tube is the: - ANS-anode
The maximum speed the rotating anode will typically achieve is ______ rpm. - ANS-
10,000
The letter "x" in x-rays is the symbol for: - ANS-the unknown
The distance between two successive crests of a sine wave is known as: - ANS-
wavelength
What is the name of the device in a rotating anode x-ray tube that turns the rotor? -
ANS-Stator
What is defined as the production of an x-ray photon by a collision between the incident
electron and a K-shell electron of the tungsten atom? - ANS-Characteristic interaction
_______ is the boiling off of electrons from the filament when current is applied. - ANS-
Thermionic emission
,What process describes x-ray production following the incoming electron electron
ejecting an inner shell electron? - ANS-Characteristic
The actual flow of electrons from cathode to anode within the x-ray tube is known as: -
ANS-tube current
Which of the following terms could be defined as the instantaneous production of light
only during an interaction between a type of energy and some element or compound? -
ANS-Fluorescence
With a standard x-ray tube, ______________% of the x-ray beam produced with 90 kVp
is the result of bremsstrahlung interactions. - ANS-85
Filament current is approximately: - ANS-3 to 5 A
Barium platinocyanide was the: - ANS-fluorescent material that glowed when the tube
was energized
During x-ray production, the energy of the moving electrons is converted into: - ANS-
electromagnetic energy
(T/F) When an electron from the L-shell of the tungsten atom is ejected from its orbit by
a projectile electron, high-energy x-ray photons are produced. - ANS-False, very low
energy x-rays are produced when an L-shell electron is ejected from its orbit.
What type of tube was Roentgen working with in his lab when x-rays were discovered? -
ANS-Crookes tube
In a dual-focus tube, how many filaments are energized at any one-time during x-ray
production? - ANS-One
What is the correct description of the relationship between the wavelength and
frequency of the x-ray photon? - ANS-Frequency and wavelength are inversely related
A _______ is a small, discrete bundle of energy - ANS-Photon/Quantum
An x-ray beam that has photons with many different energies is: - ANS-heterogeneous
X-ray can: - ANS-- penetrate the human body
- be absorbed in the human body
- change direction in the human body (scattering)
(T/F) X-ray photons travel at the speed of light in a vacuum. - ANS-True
When were x-rays discovered? - ANS-November 8, 1895
, The device that receives the radiation leaving the patient is the: - ANS-image receptor
_____ results in the process of image formation, whereby the x-ray beam interacts with
the anatomic tissue, and a portion of the beam passes through the part and strikes the
image receptor. - ANS-Differential absorption
_____ is the loss of some of the energy from the x-ray beam as it passes through the
tissue being imaged. - ANS-Attenuation
The photoelectric effect involves the removal (ejection) of an electron. This process of
removing an electron from an atom is known as: - ANS-ionization
When the x-ray photon travels completely through the part without any interaction, it is
called: - ANS-transmission
When the x-ray photon strikes an atom within the tissue being imaged and loses all of
its energy to an inner shell electron of that atom, the photon is said to have been _____.
- ANS-absorbed
When the x-ray photon strikes an atom within the tissue being imaged and loses only
part of its energy to an outer shell electron of that atom, the photon is said to have been
_____. - ANS-scattered
The interaction between x-ray photons and tissue that results in production of a
secondary x-ray photon is the: - ANS-photoelectric interaction
When the entering x-ray photon loses energy and changes its path of travel as a result
of interacting with an atom, the interaction is known as the: - ANS-Compton effect
The outer shell electron that is ejected during the Compton interaction is also known as
a: - ANS-secondary electron/Compton electron
Interactions of high-energy x-rays (energies beyond the diagnostic range) with tissue
include: - ANS-pair production and photodisintegration
Interactions of low-energy x-rays (energies below the diagnostic range) with tissue
include: - ANS-coherent scattering
The x-ray beam that leaves the patient in the direction of the image receptor is often
referred to as: - ANS-remnant/exit radiation
If scattered photons are absorbed within the anatomic tissue, they: - ANS-contribute to
the radiation exposure of the patient and do not contribute and useful information about
the anatomic part of interest
