ARRT PRACTICE QUESTION WITH ANSWERS
What controls the number of electrons passing from the cathode to the anode
an x-ray tube? -Answer:..Mas
What controls the quantity of the x-rays produced at the anode? -
Answer:..MasQuantity -Answer:..Mas Quality -Answer:..Kvp
What controls the amount of radiation exiting the x-ray tube? -Answer:..Mas
As mas is increased density is____in the same amount -Answer:..Increased
As mas is decreased density_____in the same amount -Answer:..Decreases
What directly controls the energy or quality of the x-rays produced? -
Answer:..Kvp
As KVP _____, a greater potential difference exists between the cathode in the
anode -Answer:..Increases
As the_____ __________increases, the electrons from the cathode strike the anode
in greater numbers and with greater energy -Answer:..Potential difference
As a Kvp increases a greater potential difference excists which results in an
increase level of production of___wavelength and high-energy radiation -
Answer:..Short
KVP's affect on density is governed by what? -Answer:..15% rule
,A increases in KVp of 15% ___ density -Answer:..Doubles
A decrease in KVp by 15% _____ density -Answer:..1/2s
Intensity of the x-ray beam is inversely proportional to the square of the
distance between the source of x-rays and the image receptor -
Answer:..Inverse square law
Intensity is measured in -Answer:..Roentgens Or coulombs/kilogram (SI)
Radiographic density is a function of what? -Answer:..Beam intensity
Beam intensity is governed by the? -Answer:..Inverse square law
The inverse square law describes changes in____ ______ -Answer:..Beam
intensity (and radiographic density which is a function of being intensity)
If the SID is doubled intensity (density).... -Answer:..Decreases four times
If distance is halved, intensity (density) ... -Answer:..Increase four times
Variations in intensity is the result of the____of the x-ray beam as it travels
through space -Answer:..Divergence Different atomic number Same numbers
of neutrons -Answer:..IsotonesSame element
Same atomic number Different mass -Answer:..Isotope
,Different atomic number Same mass -Answer:..Isobar
During the first part of the first term of a pregnancy what type of
abnormalities occur? -Answer:..Skeletal
During the second part of the first term of pregnancy what type of
abnormalities occur? -Answer:..Neurologic
General diagnostic exams deliver a fetal dose less than ___-__ RAD -Answer:..1-
2 Late effects Malignancy
Leukemia Genetic effects -Answer:..Stochastic effects
Stochastic effects have a ______, _______Dose- response curve -Answer:..Linear,
non-threshold
Max leakage radiation -Answer:..100 Mr/h at 1m
As OFD increases -Answer:..Resolution Quality Decreases
As FFS increases -Answer:..Resolution Quality Decreases
A proportional increase in SID and OiD -Answer:..No change in resolution
Higher sampling frequencies -Answer:..Aliasing artifacts are more obvious
, Lower sampling frequencies aliasing artifacts... -Answer:.... are less obvious
Moire effect -Answer:..Aliasing artifact
Occurs when using stationary grids
When SID is increased the recorded detail is? -Answer:..Increased
Best recorded detail when using a ______ SID -Answer:..Long
There is a _____ relationship between recorded detail and SID -Answer:..Direct
A image plate front material -Answer:..Carbon fiber
Interspace materials of a grid -Answer:..Alumunium Plastic fiber
As matrix size increases pixel size ______ -Answer:..Decreases
Pixel size is ________ related to resolution -Answer:..Inversely
Dynamic range = -Answer:..Pixel depth/ shades of gray
More bits = ____ shades of gray -Answer:..More
What controls the number of electrons passing from the cathode to the anode
an x-ray tube? -Answer:..Mas
What controls the quantity of the x-rays produced at the anode? -
Answer:..MasQuantity -Answer:..Mas Quality -Answer:..Kvp
What controls the amount of radiation exiting the x-ray tube? -Answer:..Mas
As mas is increased density is____in the same amount -Answer:..Increased
As mas is decreased density_____in the same amount -Answer:..Decreases
What directly controls the energy or quality of the x-rays produced? -
Answer:..Kvp
As KVP _____, a greater potential difference exists between the cathode in the
anode -Answer:..Increases
As the_____ __________increases, the electrons from the cathode strike the anode
in greater numbers and with greater energy -Answer:..Potential difference
As a Kvp increases a greater potential difference excists which results in an
increase level of production of___wavelength and high-energy radiation -
Answer:..Short
KVP's affect on density is governed by what? -Answer:..15% rule
,A increases in KVp of 15% ___ density -Answer:..Doubles
A decrease in KVp by 15% _____ density -Answer:..1/2s
Intensity of the x-ray beam is inversely proportional to the square of the
distance between the source of x-rays and the image receptor -
Answer:..Inverse square law
Intensity is measured in -Answer:..Roentgens Or coulombs/kilogram (SI)
Radiographic density is a function of what? -Answer:..Beam intensity
Beam intensity is governed by the? -Answer:..Inverse square law
The inverse square law describes changes in____ ______ -Answer:..Beam
intensity (and radiographic density which is a function of being intensity)
If the SID is doubled intensity (density).... -Answer:..Decreases four times
If distance is halved, intensity (density) ... -Answer:..Increase four times
Variations in intensity is the result of the____of the x-ray beam as it travels
through space -Answer:..Divergence Different atomic number Same numbers
of neutrons -Answer:..IsotonesSame element
Same atomic number Different mass -Answer:..Isotope
,Different atomic number Same mass -Answer:..Isobar
During the first part of the first term of a pregnancy what type of
abnormalities occur? -Answer:..Skeletal
During the second part of the first term of pregnancy what type of
abnormalities occur? -Answer:..Neurologic
General diagnostic exams deliver a fetal dose less than ___-__ RAD -Answer:..1-
2 Late effects Malignancy
Leukemia Genetic effects -Answer:..Stochastic effects
Stochastic effects have a ______, _______Dose- response curve -Answer:..Linear,
non-threshold
Max leakage radiation -Answer:..100 Mr/h at 1m
As OFD increases -Answer:..Resolution Quality Decreases
As FFS increases -Answer:..Resolution Quality Decreases
A proportional increase in SID and OiD -Answer:..No change in resolution
Higher sampling frequencies -Answer:..Aliasing artifacts are more obvious
, Lower sampling frequencies aliasing artifacts... -Answer:.... are less obvious
Moire effect -Answer:..Aliasing artifact
Occurs when using stationary grids
When SID is increased the recorded detail is? -Answer:..Increased
Best recorded detail when using a ______ SID -Answer:..Long
There is a _____ relationship between recorded detail and SID -Answer:..Direct
A image plate front material -Answer:..Carbon fiber
Interspace materials of a grid -Answer:..Alumunium Plastic fiber
As matrix size increases pixel size ______ -Answer:..Decreases
Pixel size is ________ related to resolution -Answer:..Inversely
Dynamic range = -Answer:..Pixel depth/ shades of gray
More bits = ____ shades of gray -Answer:..More
