Ch 15 Radiographic appearance Flashcards
1
Q
What is radiographic contrast?
A
- Difference in density between areas on a radiograph, or the degree of grayness
2
Q
What is attenuation?
A
- Reduction of intensity of an x-ray beam as it traverses matter.
3
Q
What is reduction caused by?
A
- Absorption or by deflection (scatter) of photons
- Also can be affected by different factors such as beam energy and atomic number
4
Q
Subtle variations in light and dark _________ and interpretation of patient information?
A
aid in diagnosis
5
Q
Radiopaque describes?
A
materials that are dense enough to resist xrays shinning through them .
6
Q
Radiolucent means?
A
materials that are not dense enough ti keep xrays from shinning through
7
Q
How does caries appear on a radiograph?
A
radiolucent
8
Q
Can you see caries on a radiograph that has overlapping and what does overlapping cause?
A
No
Causes burnout
