Dental Radiography--Dental X-Ray Image Characteristics--Chapter 8

Front 1

Radiolucent

Back 1

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.

Front 2

Radiopaque

Back 2

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.

Front 3

Density

Back 3

The overall blackness or darkness of a dental radiograph.

Front 4

Increases in mA (milliamperage) produces:

Back 4

1. The density is increased
2. The radiograph appears darker

Front 5

Decreases in mA (milliamperage) produces:

Back 5

1. The density is decreased
2. The radiograph appears lighter

Front 6

Only one exposure factor has a DIRECT INFLUENCE on the CONTRAST of a dental radiograph:

Back 6

kVP affects contrast

Front 7

Increased kVp means?

Back 7

1. Increased average energy of X-rays
2. Higher energy x-rays
3. More variations in tissue density & appear as varying shades of gray.

Front 8

Higher kVp produces?

Back 8

Image with decreased or low contrast.

Too many shades of gray.

Front 9

Lower kVp produces?

Back 9

Image with increased or higher contrast.

Many black and white areas.

Front 10

Hygienists are in charge of what influencing factors?

Back 10

Object-film alignment (parallel)
X-ray beam angulation (perpendicular)