Radiography Flashcards
What year is the IRMER?
2000
What is a RPA
Radiation protection adviser
What is a developer?
Alkaline
What is a PA?
Periapical X-ray
What’s the risk of a X-ray?
Dermatitis, infertility, cancer, leukaemia, cell mutation
What does ALARP stand for?
As low as reasonably practicable
Why may you use a radiography?
Dental caries, periodontal disease, abscess/cysts, bone loss, nerves, overhangs, supernumeraries, endodotic treatment
The medical physicist who is appointed in writing and gives advice on staff and public is known as the:
A. RPA
B. RPB
C. Legal person
D. RPS
RPA - Radiation protection adviser
All of the following are faults which can occur to dental radiographs during processing expect:
A. Image is herringbone
B. Film has splash marks
C. Film is black
D. Film is blank
Image is herringbone - when film is placed wrong around.
A radiograph has been taken and the dentist states they think it may have been over exposed. How will the image appear?
A. Herringbone effect
B. Too light
C. Fogged
D. Too dark
Too dark
The stages of automatic processing of radiographic film are:
A. Washing, fixation, washing, development, drying
B. Washing, development, washing, fixation, drying
C. Development, fixation, washing, drying
C. Development, wash, fixing, washing, drying
Development, fixation, washing, drying - film always get washed once as alkaline and acid never meet. Developer is alkaline and fixer is acid.
The exposure time of extra oral radiographs is kept to minimum by the use of:
A. Larger film
B. Fast films (f speed)
C. Light tight cassettes
D. Intensifying screens
Intensifying screens
A 20 years old man comes to your practice as a new patient requiring an endodontic assessment. Which type of radiograph would be appropriate at this stage?
A. Dental panoramic tomography (DPT)
B. Occlusal
C. Bitewings
D. Periapical
Periapical - before doing any endodontic treatments a periapical radiograph must be done to see the the apex of the roots and surrounding bone.
Which of the following options is true with regard to correct storage of films?
A. Old and new stock must not be stored together
B. Old stock must be used first
C. Fast films must be kept in their original package
D. Films do not have ‘use by’ dates, as so chemicals
Old stock must be used first
Which one of the following options correctly states the order of contents of an intra-oral film packet, from the x-ray machine?
A. Paper, film, foil, paper
B. Paper, film, paper, foil
C. Paper, foil, paper, film
D. Paper, foil, film, paper
Paper, film, paper, foil - foil always stays at the back
What is the title of the designated person appointed in each dental workplace to assess the risk of using ionising radiation, and to oversee the precautions taken to minimise the risks identified?
A. Medical physicist B. Legal person C. Radiation protection supervisor C. Legal person D. Radiation protection adviser
Radiation protection supervisor
When run correctly, a quality assurance of radiographs MUST achieve which one of the following aims?
A. Be cost effective
B. Minimise patient exposure to an acceptable level
C. Reduce patient waiting times
D. Save clinical time
B. Minimise patient exposure to an acceptable level
The safe use of ionoising radiation involves following the principle of ALARP (ALARA) to reduce the exposure of patients and staff to x-rays. Which one of the following will NOT help to achieve ALARP (ALARA)?
A. Use of d speed films
B. Expose the patients only
C. Fresh processing solutions
D. Equipment maintenance
Use of d speed films
Where on the body should a radiation monitoring badge be worn?
A. Waist area
B. Chest area
C. Shoulder nearest the x-ray tube head
D. Thyroid area
Waist area
What are the hazards associated with dental radiography?
Cell mutation, dermatitis, burns, cancer/leukemia, abnormalities to unborn foetus, infertility
Why are bitewing x rays taken?
Periodontal bone levels, presence of calculus, overhanging caries and interproximal
Why are Periapical (PA) x rays taken?
Bone levels, presence of unerupted teeth, root fracture/morphology, apical pathology
Description of a periapical (PA) x ray
Shows the whole form of the tooth from the crown to the apex of the root and some surrounding bone.
Description of a bitewing x ray
Shows 2nd and 3rd premolars and molar of upper and lower in occlusion
