Page 1 of 73
FLUOROSCOPY ARRT EXAM AND STUDY GUIDE
NEWEST 2025 TEST BANK| COMPLETE 550 REAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) GRADED A+| ARRT
FLUOROSCOPY EXAM PREP 2025 (MOST RECENT!!)
what mag modes are available? .....ANSWER..... if you have a
16" II, you can have 12,9,6, and 4.5 "
Compton effect .....ANSWER..... hits the outer electron, incomplete
transfer of energy, electron released and a low energy xray is
deflected
photoelectric absorption .....ANSWER..... x-ray totally absorbed
by inner shell electron, x-ray overcomes binding energy and
knock out the electron and an outer shell electron takes it place.
When the outer electron moves to its new place, a characteristic
x-ray is formed
,Page 2 of 73
what is the product of photoelectric absorption? .....ANSWER.....
electron flying , characteristic x-ray, and positive ion
coherent scatter .....ANSWER..... aka Thompson scatter, Rayleigh
scatter or classical scatter. x-ray is absorbed by entire atom and
is sent off in another direction with no energy loss
does coherent scatter result in patient dose? .....ANSWER..... No,
this reaction only causes excitation of the atoms shells, but there
is not energy transfer nor does the x-ray lose energy ( isotropic)
what is the chance of coherent scatter occurring? .....ANSWER.....
5%
attenuation .....ANSWER..... the drop of intensity of the beam due
to absorption and scatter
photoelectric interaction is dependent on .....ANSWER..... Z^ 3
and 1/E^3
,Page 3 of 73
as photon energy increases there is more .....ANSWER.....
penetration and a decrease in tissue interactions
Compton is dependent on .....ANSWER..... energy level ( the
higher it is, the greater probability of occurrence), electrons/
gram
attenuation equation .....ANSWER..... I= Io e^ (-ux)
initial energy x e^( attenuation factor x tissue thickness)=
resulting energy
initial energy- resulting energy= absorbed energy
u ( tissue attenuation coeffient) is dependent on .....ANSWER.....
keV and material
what is the source of free electrons? .....ANSWER..... cathode
what is the cathode made of? .....ANSWER..... 98% tungsten, 1-
2% thorium
, Page 4 of 73
in what direction are electrons accelerated? .....ANSWER.....
cathode to anode
how do we focus electron? .....ANSWER..... we use a focusing cup
made of nickel that has a greater negative charge. This negative
charge repels and squishes the electrons that are made from
thermionic emission
how does deceleration occur in electrons? .....ANSWER..... the
closer to the nucleus the electron is, the more attraction there is
and as a result it slows down faster. More energy is transferred
to the xray and it has a higher energy as well. If the electron is
far, it wont slow down as much, it will lose less energy and will
result in a low energy electron.
what is the cathode filament made of? .....ANSWER..... Tungsten
bremsstrahlung interaction .....ANSWER..... 99% heat, 1% x-ray
aka braking radiation, cathode electrons hit anode electrons.
Electron that are closer to the nucleus slow down more and lose
FLUOROSCOPY ARRT EXAM AND STUDY GUIDE
NEWEST 2025 TEST BANK| COMPLETE 550 REAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) GRADED A+| ARRT
FLUOROSCOPY EXAM PREP 2025 (MOST RECENT!!)
what mag modes are available? .....ANSWER..... if you have a
16" II, you can have 12,9,6, and 4.5 "
Compton effect .....ANSWER..... hits the outer electron, incomplete
transfer of energy, electron released and a low energy xray is
deflected
photoelectric absorption .....ANSWER..... x-ray totally absorbed
by inner shell electron, x-ray overcomes binding energy and
knock out the electron and an outer shell electron takes it place.
When the outer electron moves to its new place, a characteristic
x-ray is formed
,Page 2 of 73
what is the product of photoelectric absorption? .....ANSWER.....
electron flying , characteristic x-ray, and positive ion
coherent scatter .....ANSWER..... aka Thompson scatter, Rayleigh
scatter or classical scatter. x-ray is absorbed by entire atom and
is sent off in another direction with no energy loss
does coherent scatter result in patient dose? .....ANSWER..... No,
this reaction only causes excitation of the atoms shells, but there
is not energy transfer nor does the x-ray lose energy ( isotropic)
what is the chance of coherent scatter occurring? .....ANSWER.....
5%
attenuation .....ANSWER..... the drop of intensity of the beam due
to absorption and scatter
photoelectric interaction is dependent on .....ANSWER..... Z^ 3
and 1/E^3
,Page 3 of 73
as photon energy increases there is more .....ANSWER.....
penetration and a decrease in tissue interactions
Compton is dependent on .....ANSWER..... energy level ( the
higher it is, the greater probability of occurrence), electrons/
gram
attenuation equation .....ANSWER..... I= Io e^ (-ux)
initial energy x e^( attenuation factor x tissue thickness)=
resulting energy
initial energy- resulting energy= absorbed energy
u ( tissue attenuation coeffient) is dependent on .....ANSWER.....
keV and material
what is the source of free electrons? .....ANSWER..... cathode
what is the cathode made of? .....ANSWER..... 98% tungsten, 1-
2% thorium
, Page 4 of 73
in what direction are electrons accelerated? .....ANSWER.....
cathode to anode
how do we focus electron? .....ANSWER..... we use a focusing cup
made of nickel that has a greater negative charge. This negative
charge repels and squishes the electrons that are made from
thermionic emission
how does deceleration occur in electrons? .....ANSWER..... the
closer to the nucleus the electron is, the more attraction there is
and as a result it slows down faster. More energy is transferred
to the xray and it has a higher energy as well. If the electron is
far, it wont slow down as much, it will lose less energy and will
result in a low energy electron.
what is the cathode filament made of? .....ANSWER..... Tungsten
bremsstrahlung interaction .....ANSWER..... 99% heat, 1% x-ray
aka braking radiation, cathode electrons hit anode electrons.
Electron that are closer to the nucleus slow down more and lose
