LMRT Arrt Exam With 100% Correct
Answers 2024
Roentgen discovered x-rays while working with a _____ tube? - Correct Answer-
Crookes
An "electron cloud" surrounding the filament of the cathode is referred to as a - Correct
Answer-Space charge
Free electrons of X-ray production come from the - Correct Answer-Filament
The creation of the space charge in the X-ray tube produces: - Correct Answer-
thermionic emission
The majority of photons in the X-ray beam are created by which process? - Correct
Answer-Bremsstrahlung interactions
More than 99% of the energy of the electron stream is converted into: - Correct Answer-
heat
the high-speed rotation (10,000 rpm) of the anode enables - Correct Answer-Greater
dissipation of heat from high technical factors
The degree of angulation of the x-ray tube target will determine the: - Correct Answer-
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 Answer-1 and 2
The anode heel effect is a phenomenon of X-ray production that results in: - Correct
Answer-Uneven distribution of radiation within the x-ray field
The penetrating power of the X-ray beam is controlled by varying the - Correct Answer-
Peak kilovoltage (kVp)
The rate flow of current flow across the X-ray tube is measured in - Correct Answer-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 Answer-1, 2, and 3
The unit used to indicate the total quantity of X-ray expose is - Correct Answer-
Millionsampere-seconds (mAs)
The device for removing long-wavelength radiation from the primary X-ray beam is the -
Correct Answer-Filter
X-ray equipment capable of producing 70 kVp or more is required to have total filtration
of at least: - Correct Answer-2.5 mm Al equiv
The purpose of rotating the anode of the X-ray tube is to - Correct Answer-Increase the
heat capacity of the anode
Image sharpness is determined by the - Correct Answer-Size of the effective focal spot
Above 70 kVp, what percentage of photons is created by the bremsstrahlung process? -
Correct Answer-85%
The amount detail seen in the X-ray image is referred to as - Correct Answer-spatial
resolution
Of what material is the filament made? - Correct Answer-Tungsten
Of what material is the target/anode made? - Correct Answer-Tungsten
What is added to port to remove the long-wavelength radiation? - Correct Answer-
aluminum filtration
What is the term used to describe the heating of a element to a hot temperature and the
expanding of the electrons in a atom? - Correct Answer-Thermionic emission
The cathode side of the X-ray tube is - Correct Answer-Negative
The anode side of the X-ray tube is - Correct Answer-Positive
What are the two rotation speeds for the anode? - Correct Answer-3,600 rpm and
10,000 rpm
What type of radiation production makes up the greatest portion of the X-ray beam-
bremsstrahlung or characteristic? - Correct Answer-Brehmsstrahlung
How much aluminum filtration must be in the x-ray tube to meet government standards?
- Correct Answer-2.5mm Al equiv
Answers 2024
Roentgen discovered x-rays while working with a _____ tube? - Correct Answer-
Crookes
An "electron cloud" surrounding the filament of the cathode is referred to as a - Correct
Answer-Space charge
Free electrons of X-ray production come from the - Correct Answer-Filament
The creation of the space charge in the X-ray tube produces: - Correct Answer-
thermionic emission
The majority of photons in the X-ray beam are created by which process? - Correct
Answer-Bremsstrahlung interactions
More than 99% of the energy of the electron stream is converted into: - Correct Answer-
heat
the high-speed rotation (10,000 rpm) of the anode enables - Correct Answer-Greater
dissipation of heat from high technical factors
The degree of angulation of the x-ray tube target will determine the: - Correct Answer-
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 Answer-1 and 2
The anode heel effect is a phenomenon of X-ray production that results in: - Correct
Answer-Uneven distribution of radiation within the x-ray field
The penetrating power of the X-ray beam is controlled by varying the - Correct Answer-
Peak kilovoltage (kVp)
The rate flow of current flow across the X-ray tube is measured in - Correct Answer-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 Answer-1, 2, and 3
The unit used to indicate the total quantity of X-ray expose is - Correct Answer-
Millionsampere-seconds (mAs)
The device for removing long-wavelength radiation from the primary X-ray beam is the -
Correct Answer-Filter
X-ray equipment capable of producing 70 kVp or more is required to have total filtration
of at least: - Correct Answer-2.5 mm Al equiv
The purpose of rotating the anode of the X-ray tube is to - Correct Answer-Increase the
heat capacity of the anode
Image sharpness is determined by the - Correct Answer-Size of the effective focal spot
Above 70 kVp, what percentage of photons is created by the bremsstrahlung process? -
Correct Answer-85%
The amount detail seen in the X-ray image is referred to as - Correct Answer-spatial
resolution
Of what material is the filament made? - Correct Answer-Tungsten
Of what material is the target/anode made? - Correct Answer-Tungsten
What is added to port to remove the long-wavelength radiation? - Correct Answer-
aluminum filtration
What is the term used to describe the heating of a element to a hot temperature and the
expanding of the electrons in a atom? - Correct Answer-Thermionic emission
The cathode side of the X-ray tube is - Correct Answer-Negative
The anode side of the X-ray tube is - Correct Answer-Positive
What are the two rotation speeds for the anode? - Correct Answer-3,600 rpm and
10,000 rpm
What type of radiation production makes up the greatest portion of the X-ray beam-
bremsstrahlung or characteristic? - Correct Answer-Brehmsstrahlung
How much aluminum filtration must be in the x-ray tube to meet government standards?
- Correct Answer-2.5mm Al equiv
