Radiographic Errors Flashcards
____ cassettes are grey/yellow with rubber edges and are nonrepairable
Kodak
____ cassettes are orange/black and typically do not have good screen contact
Agfa
Density of the film should be ___ O.D.
1.0
If poor screen contact is an issue, the resulting film demonstrates areas of _____
unsharpness
Screen contacts should be erased when?
Once a month
What should be used to clean screens?
Distilled water, using gauze to dry (stand upright and open)
___ amount of film fog obscure the resolution
Low
_____ amount of film fog obscures the entire image
High
If the image is reversed, film fog is very ____
High
What may cause severe film fog?
Incorrect safelight, safelight too bright, cracks or light leaks, leaks around darkroom door
80% of all artifacts are caused by _____
processing
When should the developer be changed?
When the films lose contrast, when the chemistry becomes coffee colored
If chemistry is contaminated, ____ will “die” immediately
Hydroquinone
Clears away the unexposed emulsion and fixes the image on the film
Fixers
Clearing time should be ____ of fixing time
1/2
_____ _____ _____ sinks to the bottom of the tank and the nonhardened emulsion will slip off the film
Environmentally Friendly Hardener
When do you change fixer?
Every second chemical change
Processor vs XRay Artifact Test
If the artifacts stay in the same orientation they are caused by the ______
Processor
