Radiation Flashcards
(30 cards)
When should a radiation machine be switched off?
After each exposure
Does a fast film mean reduced exposure time?
True or false
True
Radiation monitoring badges should be worn when more than how many intra oral films are taken weekly?
100
Radiation badges must be worn when how many extra oral films are taken weekly?
50
When there is a controls area of radiation whose function is it to ensure compliance with IRR17 and in particular to supervise the arrangements set out in the local rules?
Radiation protection supervisor
What is the function of lead foil in an x-ray film?
Stops x-rays traveling
What is the function of black paper in an x-ray film packet?
To keep the film dark
What is the manual processing sequence?
Developer, water, fixer, water
What is the automatic processing sequence?
Developer, fixer, water
What is a step wedge used for?
Test film to check density and contrast
Why are fin holders used when taking intra oral views?
Reduce the risk of errors
Or
No radiation on the patients hand and fingers
How many intensifying screens are in an extra oral cassette?
2
What does an intensifying screen in an extra oral cassette do?
Reduces the x-ray does to the patient
How to intensifying screens reduce patient exposure to x-rays?
The crystal that coat the intensifying screen glow when hit by the radiation which produces image quicker and limits the X-ray dose
3 prices of information that must be recorded to ensure that dental radiographer can be retrieved and identified for each patient regardless of how it was taken and processed?
Patient name
Date the film was taken
Tooth that was x-rayed
What advised are there of using digital radiography over radiographic films?
Less radiation
No hazardous processing chemicals required
Hazards of handling the processing chemicals used in dental radiography?
Risk of inhalation
Risk of skin contact
Risk of spillage
Says you would handle radiography chemicals safely
Wear PPE
store in a cool, dry, dark area
X-ray developer solution is alkaline, true or false?
True
X-ray deeper is acidic, true or false?
True
How should spent fixer be disposed off ?
Red stream waste
Reasons a film may appear to dark after processing ?
Developer too hot
Developer too strong
In developer too long
Exposure set to high
Reason a film may appear to light?
Developer too cold
Inadequate time in developer
Developer to weak
Exposure time to low
What processing faults may occur if a film is blank?
Underexposed film
Film put is fixer before developer
