Density
Contrast
Geometric Characteristics
100
There are degrees to density? T/F
T: can be lighter and darker
100
What is contrast?
Difference in the degrees of blackness/whiteness between adjacent areas on a radiograph
100
What are the 3 objectives of geometric characteristics?
What is: Sharpness, magnification, and distortion.
200
What is radiopaque?
The white or light portion
200
Is this image high or low contrast?
High contrast
200
What are the 3 factors that influence sharpness?
What is: Focal spot, film composition, and movement.
300
What is radiolucency?
Dark or black part of the image
300
What is the result on contrast if the kV is high?
low contrast
300
According to the book, which PID is preferred to limit magnification? Longer PID or a shorter PID
Longer PID
400
What is an uncontrollable variable for density?
the thickness of the patient
400
What is the kV and contrast for short scale contrast?
Low kV and High contrast
400
What are the two influencing factors that affect distortion?
Object film and x-ray beam angulation
500
What are the three exposure factors?
1: kV
2: mA
3: exposure time
500
What is the kV and contrast for long scale contrast?
High kV and low contrast
500
How does crystal size influence sharpness?
What is: Bigger crystal size = less sharpness & Smaller crystal size = More sharpness.