Fluoroscopy ARRT EXAM STUDY GUIDE |
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Terms in this set (446)
what mag modes are if you have a 16" II, you can have 12,9,6, and 4.5 "
available?
hits the outer electron, incomplete transfer of energy,
Compton effect
electron released and a low energy xray is deflected
x-ray totally absorbed by inner shell electron, x-ray
overcomes binding energy and knock out the
photoelectric absorption electron and an outer shell electron takes it place.
When the outer electron moves to its new place, a
characteristic x-ray is formed
what is the product of electron flying , characteristic x-ray, and positive ion
photoelectric absorption?
aka Thompson scatter, Rayleigh scatter or classical
coherent scatter scatter. x-ray is absorbed by entire atom and is sent
off in another direction with no energy loss
No, this reaction only causes excitation of the atoms
does coherent scatter
shells, but there is not energy transfer nor does the x-
result in patient dose?
ray lose energy ( isotropic)
, what is the chance of 5%
coherent scatter
occurring?
the drop of intensity of the beam due to absorption
attenuation
and scatter
photoelectric interaction Z^ 3 and 1/E^3
is dependent on
as photon energy penetration and a decrease in tissue interactions
increases there is more
energy level ( the higher it is, the greater probability
Compton is dependent on
of occurrence), electrons/ gram
I= Io e^ (-ux)
initial energy x e^( attenuation factor x tissue
attenuation equation
thickness)= resulting energy
initial energy- resulting energy= absorbed energy
u ( tissue attenuation keV and material
coeffient) is dependent on
what is the source of free cathode
electrons?
what is the cathode made 98% tungsten, 1-2% thorium
of?
in what direction are cathode to anode
electrons accelerated?
we use a focusing cup made of nickel that has a
how do we focus greater negative charge. This negative charge repels
electron? and squishes the electrons that are made from
thermionic emission
(complete solutions) Exam| ASSURED SUCCESS
|GRADE A+!! |Questions & Answers 100% Verified
2025 latest update
Save
Terms in this set (446)
what mag modes are if you have a 16" II, you can have 12,9,6, and 4.5 "
available?
hits the outer electron, incomplete transfer of energy,
Compton effect
electron released and a low energy xray is deflected
x-ray totally absorbed by inner shell electron, x-ray
overcomes binding energy and knock out the
photoelectric absorption electron and an outer shell electron takes it place.
When the outer electron moves to its new place, a
characteristic x-ray is formed
what is the product of electron flying , characteristic x-ray, and positive ion
photoelectric absorption?
aka Thompson scatter, Rayleigh scatter or classical
coherent scatter scatter. x-ray is absorbed by entire atom and is sent
off in another direction with no energy loss
No, this reaction only causes excitation of the atoms
does coherent scatter
shells, but there is not energy transfer nor does the x-
result in patient dose?
ray lose energy ( isotropic)
, what is the chance of 5%
coherent scatter
occurring?
the drop of intensity of the beam due to absorption
attenuation
and scatter
photoelectric interaction Z^ 3 and 1/E^3
is dependent on
as photon energy penetration and a decrease in tissue interactions
increases there is more
energy level ( the higher it is, the greater probability
Compton is dependent on
of occurrence), electrons/ gram
I= Io e^ (-ux)
initial energy x e^( attenuation factor x tissue
attenuation equation
thickness)= resulting energy
initial energy- resulting energy= absorbed energy
u ( tissue attenuation keV and material
coeffient) is dependent on
what is the source of free cathode
electrons?
what is the cathode made 98% tungsten, 1-2% thorium
of?
in what direction are cathode to anode
electrons accelerated?
we use a focusing cup made of nickel that has a
how do we focus greater negative charge. This negative charge repels
electron? and squishes the electrons that are made from
thermionic emission
