Term
| exit, or image-formation, radiation is composed of what |
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Definition
| non-interacting and small-angle scattered photons |
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Term
| what contributes significantly to the exposure of the radiographer |
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Definition
| the compton scattered photon |
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Term
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Definition
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Term
| in the radiographic kilovoltage range, what structure undergoes the most photoelectric absorption |
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Definition
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Term
| during which x-ray interaction with matter is the energy of the incident photon partially absorbed |
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Definition
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Term
| when a high atomic number solution is used as a contrast medium what occurs |
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Definition
| photoelectric interaction is enhanced which leads to an increase in absorbed dose |
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Term
| what factors influence attenuation |
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Definition
| effective atomic number, mass density, and part thickness |
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Term
| which x-ray interaction with matter creates fog |
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Definition
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Term
| what does kilovoltage control |
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Definition
| quality, penetrating power, conrast |
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Term
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Definition
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Term
| what is the absorbed dose |
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Definition
| amount of energy absorbed per unit mass |
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Term
| benefits of lowering patient dose |
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Definition
| less radiation is scattered, reduces occupational dose |
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Term
| what is the target (anode) made of |
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Definition
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Term
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Definition
| high melting point, high atomic number |
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Term
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Definition
| removes soft rays decreasing patient dose |
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Term
| for a typical diagnostic x-ray unit, the energy of the average photon in the x-ray beam is. . . |
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Definition
| about one third the energy of the most energetic photon |
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Term
| what is direct transmission |
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Definition
| primary photons that traverse the patient without interacting |
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Term
|
Definition
| when scattered photons reach the IR |
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Term
| what do we use to improve image quality |
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Definition
| air gaps and grids (limits the effects of indirect x-ray photons) |
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Term
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Definition
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Term
| photons interaction with matter is: |
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Definition
|
|
Term
| how much energy is lost in coherent scattering |
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Definition
|
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Term
| what level of energy occurs with coherent scattering |
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Definition
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Term
|
Definition
| higher kVp, lower atomic number |
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Term
|
Definition
| lower kVp, higher atomic number |
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Term
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Definition
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Term
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Definition
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