LMRT ARRT EXAM
Q&A(100%)CORRECT
Roentgen discovered x-rays while working with a _____ tube? - correct answers:Crookes
An "electron cloud" surrounding the filament of the cathode is referred to as a - correct answers:Space
charge
Free electrons of X-ray production come from the - correct answers:Filament
The creation of the space charge in the X-ray tube produces: - correct answers:thermionic emission
The majority of photons in the X-ray beam are created by which process? - correct
answers:Bremsstrahlung interactions
More than 99% of the energy of the electron stream is converted into: - correct answers:heat
the high-speed rotation (10,000 rpm) of the anode enables - correct answers:Greater dissipation of heat
from high technical factors
The degree of angulation of the x-ray tube target will determine the: - correct answers:size of the actual
and effective focal spot
A dual-focus X-ray tube has:
1: Two filaments
2: Two focal spot sizes
3: Two anodes - correct answers:1 and 2
, The anode heel effect is a phenomenon of X-ray production that results in: - correct answers:Uneven
distribution of radiation within the x-ray field
The penetrating power of the X-ray beam is controlled by varying the - correct answers:Peak kilovoltage
(kVp)
The rate flow of current flow across the X-ray tube is measured in - correct answers:mA
Doubling the mA will result in
1: increased patient dose
2: twice as many photons in the X-ray beam
3: increased radiographic density - correct answers:1, 2, and 3
The unit used to indicate the total quantity of X-ray expose is - correct answers:Millionsampere-seconds
(mAs)
The device for removing long-wavelength radiation from the primary X-ray beam is the - correct
answers:Filter
X-ray equipment capable of producing 70 kVp or more is required to have total filtration of at least: -
correct answers:2.5 mm Al equiv
The purpose of rotating the anode of the X-ray tube is to - correct answers:Increase the heat capacity of
the anode
Image sharpness is determined by the - correct answers:Size of the effective focal spot
Above 70 kVp, what percentage of photons is created by the bremsstrahlung process? - correct
answers:85%
Q&A(100%)CORRECT
Roentgen discovered x-rays while working with a _____ tube? - correct answers:Crookes
An "electron cloud" surrounding the filament of the cathode is referred to as a - correct answers:Space
charge
Free electrons of X-ray production come from the - correct answers:Filament
The creation of the space charge in the X-ray tube produces: - correct answers:thermionic emission
The majority of photons in the X-ray beam are created by which process? - correct
answers:Bremsstrahlung interactions
More than 99% of the energy of the electron stream is converted into: - correct answers:heat
the high-speed rotation (10,000 rpm) of the anode enables - correct answers:Greater dissipation of heat
from high technical factors
The degree of angulation of the x-ray tube target will determine the: - correct answers:size of the actual
and effective focal spot
A dual-focus X-ray tube has:
1: Two filaments
2: Two focal spot sizes
3: Two anodes - correct answers:1 and 2
, The anode heel effect is a phenomenon of X-ray production that results in: - correct answers:Uneven
distribution of radiation within the x-ray field
The penetrating power of the X-ray beam is controlled by varying the - correct answers:Peak kilovoltage
(kVp)
The rate flow of current flow across the X-ray tube is measured in - correct answers:mA
Doubling the mA will result in
1: increased patient dose
2: twice as many photons in the X-ray beam
3: increased radiographic density - correct answers:1, 2, and 3
The unit used to indicate the total quantity of X-ray expose is - correct answers:Millionsampere-seconds
(mAs)
The device for removing long-wavelength radiation from the primary X-ray beam is the - correct
answers:Filter
X-ray equipment capable of producing 70 kVp or more is required to have total filtration of at least: -
correct answers:2.5 mm Al equiv
The purpose of rotating the anode of the X-ray tube is to - correct answers:Increase the heat capacity of
the anode
Image sharpness is determined by the - correct answers:Size of the effective focal spot
Above 70 kVp, what percentage of photons is created by the bremsstrahlung process? - correct
answers:85%
