WorksheetsRADR 2309 Ch. 9 Interactions with Matter
Total questions: 47
Worksheet time: 24mins
The total reduction in the number of x-rays remaining in an x-ray beam after penetration through a given thickness of tissue.
Backscatter radiation
Coherent scatter
Compton scatter
Attenuation
X-rays that are scattered back in the direction of the incident x-ray beam.
Backscatter radiation
Coherent scatter
Compton scatter
Attenuation
Low energy x-ray, < 10KeV that interact with an atom.
Backscatter radiation
Coherent scatter
Compton scatter
Attenuation
Moderate energy x-rays that interact with outer-shell electrons
Backscatter radiation
Coherent scatter
Compton scatter
Attenuation
When Air and Barium are used together as agents.
Double-Contrast
Contrast Media
Mass Density
Photodisintegration
In a double-contrast air would be a ______ contrast agent.
Negative
Positive
Increased
Decreased
An x-ray image resulting from the difference between x-rays that are absorbed by the body (photoelectric) and those that are transmitted through the patient without interaction and Compton Scatter.
Differential Absorption
Compton Scatter
Coherent Scatter
Photoelectric Effect
When incident x-ray interacts with an inner K-Shell electron.
Differential Absorption
Compton Scatter
Coherent Scatter
Photoelectric Effect
Photon of 10 MeV or greater interacts with the tissue atom
Differential Absorption
Compton Scatter
Photodisintegration
Photoelectric Effect
When the beam exiting from tissue and hitting the x-ray film emulsion.
Differential Absorption
Remnant Radiation
Photodisintegration
Photoelectric Effect
Specific ____ and ____ are required to image certain tissue and if chosen correctly, it will decrease pt exposure.
mAs
kVp
Shielding
Collimation
In Coherent Scatter, incident Photons _____ NO energy but changes _________.
Loses; direction
Loses; energy
Increase; drection
Increase; outer-shell
Coherent scatter is not important because it deals with low energy x-rays which does nothing for diagnostic imaging and shows up as film fog.
True
False
At 70 kVp, 3% of x-rays undergo Coherent Scattering.
True
False
In Coherent Scatter, the wavelength of an incident photon is ____ wavelength to the scatter photon.
Equal
Inverse
Inversely Proportional
Lower
In Coherent Scatter, the wavelength of an _______ ______ is equal wavelength to the _______ ______.
incident photon; scatter photon
sine wave; positron
electron; neutron
neutron; electron
When do moderate energy x-rays interact with outer-shell electrons?
Compton Scatter
Coherent Scatter
Photoelectric Effect
Pair Production
In Compton Scatter, incident photons _____ outer-shell electrons.
Eject
Replace
Pass through
Entangle with
The electron ejected during Compton interaction is referred to as? Choose 2
Compton Electron
Secondary Electron
Backscatter Electron
Scatter Electron
Compton Electron may have enough energy to undergo more ionizing interactions.
True
False
In Compton Scatter, scattered x-ray will eventually _________.
Disappear
Be abosrbed
Increase in Kinetic Energy
Decrease in Kinetic Energy
Compton Scatter can be deflected in a single direction.
True
False
As the angle of deflection increase to 180 Degrees, _____ energy is transferred to the Compton Electron
Less
More
Double
Half
As kVp Increases > Probability of Compton Interaction _________.
Increases
Decreases
Stays the same
Cut in half
As Photon Energy _______the % of Compton Interactions ________relative to Photon Energy interactions, but the total interactions will decrease.
Increases; increases
increases; decreases
decreases; decreases
decreases; increases
Compton Scatter provides some useful information on the radiograph
False
True
Compton Scatter creates a uniform optical density known as fog which results in reduced Image ______.
Density
Contrast
Resolution
Quantity
This diagram depicts what?
Coherent Scatter
Compton Scatter
Photoelectric Effect
Photodisintegration
What describes when a incident photon is absorbed and Photoelectron is ejected from an atom.
Photoelectric Effect
Coherent Scatter
Compton Scatter
Pair Production
When a incident photon is absorbed and Photoelectron is ejected from an atom that results in the production of _________ Radiation
Bremsstrahlung
Characteristic
x-rad
Scatter
Secondary Radiation from Photoelectric effect contributes nothing of diagnostic value to the image and behaves as Compton Scatter.
True
False
Probability of a Photoelectric Effect is a function of x-ray energy and the _______ of matter
Atomic number
Difference of binding energies
Atomic mass
Speed of light
Incident x-ray MUST have less than or equal energy than the Binding Energy of electrons
True
False
Photoelectric effect results in ________ Radiation.
Primary
Secondary
Character
Bremsberg
Photoelectric effect results in a Photoelectron with kinetic energy.
True
False
Photoelectric Effect results in Ionized tissue with an increase in __________.
Compton scatter
pt dose
Line Focus Principle
Voltage Ripple
Increased Radiographic _______ on film is a result in Photoelectric Effect.
Contrast
Density
Heat
Useful Beam
What does this diagram depict?
Photoelectric Effect
Compton Scatter
Photodisintegration
Coherent Scatter
What describes when a Photon of 10 MeV or greater interacts with the tissue atom?
Photoelectric Effect
Compton Scatter
Photodisintegration
Coherent Scatter
When interaction occurs at the nucleus with Photon absorbed describes which x-ray interaction with matter?
Photoelectric Effect
Compton Scatter
Photodisintegration
Coherent Scatter
When the nucleus is excited and emits a nucleon or other nuclear fragment describes which x-ray interaction?
Photoelectric Effect
Compton Scatter
Photodisintegration
Coherent Scatter
Photodisintegration occurs at energies of 10 MeV or above and it IS a factor in Diagnostic Radiography
True
False
What does this diagram depict?
Photoelectric Effect
Compton Scatter
Photodisintegration
Coherent Scatter
An x-ray image resulting from the difference between x-rays that are absorbed by the body (photoelectric) and those that are transmitted through the patient without interaction and Compton Scatter, describes what?
Photodisintegration
Pair Production
Photoelectric Effect
Differential Absorption
Total reduction in the number of x-rays remaining in an x-ray beam after penetration through a given thickness of tissue, describes what?
Attenuation
Differential Absorption
Photoelectric Effect
Coherent scatter
When a photon of 1.02 MeV or higher interact with the tissue atom
Disintegration
Pair Production
Coherent Scatter
Differential Absorption
When 2 Electrons appear - 1 positron and 1 electron occurs during which x-ray interaction with matter?
Pair Production
Photoelectric Effect
Photodisintegration
Coherent Scatter
