Quality Assurance Flashcards
What 8 items that require quality control duties?
1) X-ray machines
2) X-ray film
3) screens and cassettes
4) viewing equipment
5) darkroom lighting
6) processing equipment
7) processing solutions
What are the 6 steps for the coin test?
1) turn off all the lights
2) unwrap an unexposed film
3) place a coin on the emulsion
4) turn on a safelight for 4 minutes
5) process the film
6) evaluate the film - if there is an outline of a coin, the safelight is not efficient
What is a reference film?
A radiograph produced under ideal conditions that allows you to compare quality and density with a quality control film
How do you create a reference film?
Expose a film using a step wedge
Develop
Compare quality control films with the reference film
What is the legal issue of a patient refusing radiographs from the aspect of negligence?
The dentist should decline treatment because xrays are the standard of care and there is no paperwork that will protect the dentist from negligence
What is the purpose and uses for panoramic imaging?
Entire Dentition Trauma Impacted teeth Edentulous Carotid calcifications
What is the other name used for panoramic imaging
Tomogram
How does the collimator in panoramic imaging differ from intra oral imaging?
The collimator exposes as it rotates
What is a focal trough
Where the dental arch’s must be placed
How is the Frankfort plane used in positioning ?
The bottom of the eye and the top of the ear canal are parallel to the floor
What are the necessary steps for positioning a patient for a panoramic image
Load cassette
Set the exposure
Remove jewelry, piercings, partials, glasses, etc
Use a protective apron without a thyroid collar
Advise them to hold still.
Adjust for height; no slouching
Bite edge to edge
Swallow and place tongue at the roof of their mouth.
How would you adjust settings on a pano for a larger patient
Increase kV
Time cannot be adjusted
What is a ghost image
A feature on an image that has been exposed twice
