Radiography Flashcards
The portion of a processed radiograph that appears dark or black is termed:
Radiolucent
The portion of a processed radiograph that appears light or white is termed:
Radiopaque
The overall blackness or darkness of a dental radiograph is termed:
Density
The difference in degrees of blackness between adjacent areas on the dental radiograph is termed:
Contrast
When viewed on a light source, a dental radiograph that demonstrates many shades of grey is said to have what?
Low contrast
All ionizing radiation is harmful and produces biological change in living tissue
The amount of energy absorbed by tissue, measured in RAD’s refers to:
Dose measurement
What is the purpose of the lead foil?
Absorbs the scatter radiation
How will a radiograph appear if it has been exposed to light?
- Foggy
- Black
What happens if the image appears stretched or the apex is missing off the end of the periapical?
Elongation
What would cause ‘black spots’ on a radiograph image?
Being splashed by fixer solution prior to developing
What causes a ‘fading’ radiograph image?
Inadequate fixing time (not in the fixer solution for long enough)
Who makes sure that a quality assurance programme is adhered to within the practice?
Radiation protection supervisor
What is a lateral oblique radiograph?
Half of the face/jaw
