Term
| What factors influence film density and contrast? |
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Definition
| kvp- effects contrast and density, mA effects- density, exposure time effects both |
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Term
| What is the difference between short scale and long scale contrast? |
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Definition
short scale=high contrast, machine functioning at low kvp(70)
long-low contrast, occurs with machines functioning at high kvp(90) |
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Term
| A diagnostic radiograph must show...(3) |
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Definition
1.have proper density and contrast
2.have sharp edges, not fuzzy
3.same size and shape as original |
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Term
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Definition
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Term
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Definition
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Term
| What does the transparency of a film when help to light depend on? |
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Definition
| distribution of black silver particles in the emulsion |
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Term
| four factors that influence density |
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Definition
1.mA
2.kVP
3.exposure time
4.subject thickness |
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Term
| Factors influencing contrast? |
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Definition
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Term
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Definition
| manufacturing and operator control |
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Term
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Definition
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Term
| Influences effecting contrast |
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Definition
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Term
| if you increase energy level of xrays produced then you are producing a higher... |
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Definition
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Term
| An increase in kvp causes a BLANK contrast? |
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Definition
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Term
| What is an aluminum step wedge? |
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Definition
| demonstrates low and high contrast, consists of uniform layered thicknesses of x-ray absorbing material |
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