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| Discovered x-rays in 1895 |
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| The amount of heat energy needed to heat up the tungsten filament. |
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| Holds the filament that will be heated to excite the electrons, giving them a negative charge. |
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| Electrons are attracted to this because it is positively charged. |
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| When an xray leaves the tube it has an uneven distribution of photons and if you don't adjust the angle the image will have blurry edges or shadows. |
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| Restricts the size of the beam. |
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| Maximum permissible dose; max dose that a person may receive in a given time period. |
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| National Committee on Radiation Protection; sets the guidelines for radiation protection |
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| As low as reasonably achievable |
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| Measure your radiation exposure in sieverts (SV) |
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| How much exposure can you safely receive in one year. |
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| The difference in energy potential between the cathode and anode. |
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| Determines the quality of the x-ray beam; quality refers to its ability to penetrate tissue. |
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| (2 * thickness) + 40 = kVp |
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| source-image distance; distance between the source of the xrays and the film |
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Definition
Four layers of xray screen;
Base
Reflective layer
Phosphor crystal layer
Protective coat |
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