Term
|
Definition
| quality or penetrating power, contrast |
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Term
|
Definition
|
|
Term
| when x-rays enter human tissue they either: |
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Definition
| interact with the atoms or pass through without interaction |
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|
Term
| what are the benefits of low patient dose |
|
Definition
| reduced scatter and reduced occupational dose |
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Term
| what is the target made of and why |
|
Definition
| tungsten because of high melting points and high atomic number |
|
|
Term
| what filtration of the x-ray beam is used |
|
Definition
| inherent and added (2.5 mm aluminum) |
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Term
|
Definition
| removes low energy x-rays decreasing patient dose |
|
|
Term
| what is the energy of the average photon |
|
Definition
| about 1/3rd the energy of the most energetic photon |
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Term
|
Definition
| primary photons traverse the patient without interacting (forms the image) |
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Term
|
Definition
| when primary photons undergo compton and coherent interactions causing them to be scattered or deflected |
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Term
|
Definition
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Term
|
Definition
| exit or image-formation or small angle |
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Term
|
Definition
| scattered or absorbed, do not reach the IR |
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|
Term
| is it possible to predict photons interaction with matter |
|
Definition
|
|
Term
| what 2 interactions with matter are important to diagnostic radiology |
|
Definition
| compton and photoelectric |
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Term
|
Definition
| lower atomic number, higher energy photon which comes from a higher kVp |
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Term
|
Definition
| higher atomic number, lower energy, lower kVp |
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Term
|
Definition
|
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Term
|
Definition
|
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Term
|
Definition
|
|
Term
|
Definition
| happens at 1 million electron volts, interacts with nucleus, results in 2 new particles |
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Term
|
Definition
| 10 MeV, radiation therapy |
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|
Term
| what three things influence attenuation |
|
Definition
| atomic number, mass density, part thickness |
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