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10 Cards in this Set
- Front
- Back
Radiolucent
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1. the part of the processed film that is DARK or BLACK.
2. A structure that appears Black on film. 3. Lacks Density and permits passage of x-ray beam with little to no resistance. |
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Radiopaque
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1. Part of the processed film that appears WHITE.
2. A structure that appears White on film. 3. Dense and either absorbs or resists the passage of the X-ray beam. |
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Density
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The overall blackness or darkness of a dental radiograph.
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Increases in mA (milliamperage) produces:
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1. The density is increased
2. The radiograph appears darker |
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Decreases in mA (milliamperage) produces:
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1. The density is decreased
2. The radiograph appears lighter |
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Only one exposure factor has a DIRECT INFLUENCE on the CONTRAST of a dental radiograph:
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kVP affects contrast
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Increased kVp means?
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1. Increased average energy of X-rays
2. Higher energy x-rays 3. More variations in tissue density & appear as varying shades of gray. |
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Higher kVp produces?
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Image with decreased or low contrast.
Too many shades of gray. |
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Lower kVp produces?
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Image with increased or higher contrast.
Many black and white areas. |
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Hygienists are in charge of what influencing factors?
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Object-film alignment (parallel)
X-ray beam angulation (perpendicular) |