Radiography Flashcards
What happens if a patient is exposed to high levels of radiation?
DNA can mutate and cause cancer and deformities.
What colour is decay found on xrays?
Dark patches.
What colour are amalgam fillings seen on xrays?
white patches.
What is the technical name for white on an xray?
Radiopaque.
What is the technical name for dark on an xray?
Radiolucent.
What are the three things radiation waves can do when they are exposed?
Unalter, Scatter and Absorb.
Why are dosages changed?
Dosages are changed depending on the tooth and patient whether that be an adult or child.
What does ALARP stand for?
As Low As Reasonably Practicable.
How far way must you stand from the xray machine?
2 metres which is called the controlled area.
How often must radiation equipment be serviced?
Every 3 years.
What are intra oral x-rays?
X-rays taken inside the mouth.
What are extra-oral x-rays?
X-rays taken outside the mouth.
What does OPG stand for?
Orthopantomagram.
What does DPT stand for?
Dental Panoramic Radiograph
How many stages are there in a automatic film processor?
4 stages.
What are the stages within the automatic film processor?
Developer, Fixer, Water Rinse, Dryer.
What is the ideal temperature for the automatic film processor?
Between 18-20 degrees.
Indirect Digital- Photostimulable Phosphor. How are these developed?
The exposed x-ray plate is taken to a scanner and inserted and when developed it is uploaded onto a computer.
Direct Digital- Complementary Metal Oxide Semi-Conductor. How is this developed?
The exposed x-ray plate is connected to a wire or can be wireless which is linked to the computer within the surgery and the image is displayed on the computer screen.
What does a light x-ray fault mean?
Under exposed.
What does a dark x-ray fault mean?
Over exposed.
What does dark lines through the x-ray image mean?
The phosphor plate is damaged.
What does a blurred image fault mean?
The patient or the kilo-meter was moving during exposure.
What does a blank image fault mean?
The phosphor plate has not been exposed to radiation.
What does it mean if the image is green/brown fault?
The chemical within the processor have expired.
What are the scores for radiographic image grading process.
1, Excellent.
2, Diagnostically Acceptable.
3, Unacceptable Quality.
What are the grades for two quality rating scale.
Diagnostically Acceptable (A) Not Acceptable (N)
Audits must be completed on radiography equipment how often?
Every 3-12 months.
What is a Lateral Cephalogram?
Side view of the skull.
What is a Lateral Oblique?
Side view of the molars.
