Characteristics of Film Emulsion Flashcards
Light affects x-ray film in a similar way it does photographic film. The way it responds to the action of x-rays and light varies due to ___________ of film by various companies such as _________, ___________, and _________. For example- response to light, color of light, and contrast scale.
- production
- Kodak
- Fugi
- DuPont
What are the characteristics of film emulsion?
- Speed (sensitivity)
- Latitude
a. film latitude
b. exposure latitude
c. subject latitude
Speed (sensitivity)
determines how film responds to X-rays or light
If a film is said to be _________, have __________, or is _____________, this means that a small exposure is needed to produce darkness on a radiograph.
- fast
- high speed
- highly sensitive
Film latitude
describes varying shades of black, white, and gray of a radiograph
Wide latitude means
many shades of gray
Narrow latitude means:
mostly black and white, with few shades of gray
Low contrast means:
many shades of gray
High contrast means:
black and white with few shades of gray
Characteristics of wide or narrow latitude or low or high contrast or long or short scale are manufactured within the _____________.
film emulsion
When kV is manipulated, radiographic contrast is further___________.
affected
High kV, low mAs=
wide latitude or low contrast film
- long scale
Low kV, high mAs =
narrow latitude or high contrast film
- short scale
Exposure latitude
refers to range of exposure factors (mAs/kV) that will produce an acceptable film.
Narrow exposure latitude, film will be twice as ______. Narrow _____________ (_____ margin of error)
- dark
- margin of error
- low
