RADT 415 Final (With errorfree Answers)
2023.
the production of heat at the anode is directly proportional to _______ correct answers tube
current
approximately _____ of the kinetic energy of the projectile electrons is converted to x-rays at the
target correct answers 1%
the _____ of an x-ray beam is higher when the peak of the emission spectrum is further to the
_____. correct answers quality, right
x-ray quantity increases in direct proportion to increases in _____. correct answers mAs
if a photon interacts with matter and scatters, the photon correct answers exists with less energy
most of the heat generated at the target is due to _____. correct answers outer-shell excitation
the HVL is lowered by a decrease in _____. correct answers kVp
if the quantity of electrons hitting the target are doubled, the x-ray quantity is _____. correct
answers increased by a factor or two
the useful characteristic x-rays from tungsten targets are _____-shell x-rays correct answers K
changes in _____ result in directly proportional changes in the amplitude of the emission
spectrum. correct answers mA and time
beam quality is affected by _____. correct answers kVp and filtration
as the electron shells move farther from the nucleus, total electron energies _____ and binding
energies _____. correct answers increase, decrease
characteristic x-rays are produced by _____. correct answers released binding energy
during coherent scattering, the scattered photon possesses _____ as the incident photon. correct
answers the same energy, frequency and wavelength
when x-ray photons interact with matter and change direction, the process is called _____.
correct answers scatter
if an exposure is 0.5 mGy at an SID of 40 inches, what would be the exposure at an SID of 60
inches? correct answers 0.222 mGy
, the main purpose if added filtration is to reduce _____ correct answers patient dose
an incident photon with 35 keV is most likely to interact with the k-shell electron of what atom?
correct answers iodine
a photoelectron correct answers is matter and possess energy, typically travels 1-2mm in soft
tissue, and is capable of creating biological changes
the HVL of an x-ray beam is a measurement of beam _____. correct answers quality
bremsstrahlung x-rays are produced by ____ at the target. correct answers slowing electrons
(Brems=braking)
when an electron from an outer shell fills a vacancy in an inner shell, ____ correct answers a
photon is released
which of the following interactions with matter results in a radiograph with a loss of radiographic
image contrast? correct answers compton scattering
how does added filtration affect the emission spectrum? correct answers reduced amplitude and a
shift to the right
in which element are the inner-shell electrons more tightly bound to the nucleus? correct answers
lead (Z=82)
during compton scattering, the incident photon energy is divided between the _____. correct
answers recoil electron and scattered photon
most of the x-rays produced at the target are _____. correct answers bremsstrahlung
as the angle of deflection is increased from 0-180 degrees, correct answers greater energy is
imparted to the recoil electron
A 10% increase in kVp has _____ effect on x-ray intensity than/as a 10% increase in mAs.
correct answers much greater
x-ray beam quality is improved by _____. correct answers increasing filtration
if a technologist changes the technique from 70kVp @ 200 mAs to 70kVp @ 400mAs, the x-ray
intensity will _____ and OD will _____. correct answers double, double
an x-ray beam that could pass through dense tissue would have high _____. correct answers
penetrability and quality
at 55kVp, _____ of the x-rays produced are bremsstrahlung. correct answers 100%
2023.
the production of heat at the anode is directly proportional to _______ correct answers tube
current
approximately _____ of the kinetic energy of the projectile electrons is converted to x-rays at the
target correct answers 1%
the _____ of an x-ray beam is higher when the peak of the emission spectrum is further to the
_____. correct answers quality, right
x-ray quantity increases in direct proportion to increases in _____. correct answers mAs
if a photon interacts with matter and scatters, the photon correct answers exists with less energy
most of the heat generated at the target is due to _____. correct answers outer-shell excitation
the HVL is lowered by a decrease in _____. correct answers kVp
if the quantity of electrons hitting the target are doubled, the x-ray quantity is _____. correct
answers increased by a factor or two
the useful characteristic x-rays from tungsten targets are _____-shell x-rays correct answers K
changes in _____ result in directly proportional changes in the amplitude of the emission
spectrum. correct answers mA and time
beam quality is affected by _____. correct answers kVp and filtration
as the electron shells move farther from the nucleus, total electron energies _____ and binding
energies _____. correct answers increase, decrease
characteristic x-rays are produced by _____. correct answers released binding energy
during coherent scattering, the scattered photon possesses _____ as the incident photon. correct
answers the same energy, frequency and wavelength
when x-ray photons interact with matter and change direction, the process is called _____.
correct answers scatter
if an exposure is 0.5 mGy at an SID of 40 inches, what would be the exposure at an SID of 60
inches? correct answers 0.222 mGy
, the main purpose if added filtration is to reduce _____ correct answers patient dose
an incident photon with 35 keV is most likely to interact with the k-shell electron of what atom?
correct answers iodine
a photoelectron correct answers is matter and possess energy, typically travels 1-2mm in soft
tissue, and is capable of creating biological changes
the HVL of an x-ray beam is a measurement of beam _____. correct answers quality
bremsstrahlung x-rays are produced by ____ at the target. correct answers slowing electrons
(Brems=braking)
when an electron from an outer shell fills a vacancy in an inner shell, ____ correct answers a
photon is released
which of the following interactions with matter results in a radiograph with a loss of radiographic
image contrast? correct answers compton scattering
how does added filtration affect the emission spectrum? correct answers reduced amplitude and a
shift to the right
in which element are the inner-shell electrons more tightly bound to the nucleus? correct answers
lead (Z=82)
during compton scattering, the incident photon energy is divided between the _____. correct
answers recoil electron and scattered photon
most of the x-rays produced at the target are _____. correct answers bremsstrahlung
as the angle of deflection is increased from 0-180 degrees, correct answers greater energy is
imparted to the recoil electron
A 10% increase in kVp has _____ effect on x-ray intensity than/as a 10% increase in mAs.
correct answers much greater
x-ray beam quality is improved by _____. correct answers increasing filtration
if a technologist changes the technique from 70kVp @ 200 mAs to 70kVp @ 400mAs, the x-ray
intensity will _____ and OD will _____. correct answers double, double
an x-ray beam that could pass through dense tissue would have high _____. correct answers
penetrability and quality
at 55kVp, _____ of the x-rays produced are bremsstrahlung. correct answers 100%
