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Radiography and IR(ME)R — Year 3: Optimisation and dose

1. ALARA and optimisation in the surgery

2. Dose, diagnostic reference levels and equipment

3. IRR17: local rules, areas and the RPS

Radiography and IR(ME)R Year 3 – Assessment

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Radiography and IR(ME)R Year 3 – Assessment

Radiography and IR(ME)R — Year 3: Optimisation and dose
Radiography and IR(ME)R Year 3 – Assessment

Answer all questions. Pass mark: 80%.

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Question 1 of 8

1. Question

ALARA in dental radiography means:

Never taking radiographs
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Achieving the diagnostic purpose at a dose as low as reasonably achievable
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Always using the highest kV available
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Repeating every image to be sure
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Question 2 of 8

2. Question

Rectangular collimation for intra-oral radiography is:

Optional decoration
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A standard optimisation measure in UK dental practice
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Only for panoramic units
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Banned under IR(ME)R
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Question 3 of 8

3. Question

A diagnostic reference level (DRL) is:

A legal maximum dose for each named patient
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An investigation level for typical examinations, not an individual dose limit
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The same as a staff dose limit under IRR17
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Only used in hospitals
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Question 4 of 8

4. Question

If routine tests on an X-ray set fail, you should:

Keep using it until the engineer’s next annual visit
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Take it out of clinical use until it is corrected and documented
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Turn the timer down and continue
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Use it only on adults
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Question 5 of 8

5. Question

Staff should hold the intra-oral receptor in the patient’s mouth:

Whenever the holder is missing
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Never — use a holder; staff must not be in the primary beam
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Only for children
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If they wear a lead apron
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Question 6 of 8

6. Question

Local rules under IRR17 apply mainly to:

How you justify bitewings for caries
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How staff work in and around the controlled area during exposures
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Laboratory shade matching
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GDC annual retention fees
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Question 7 of 8

7. Question

Digital software that brightens an over-exposed image:

Means optimisation can be ignored
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Can hide over-exposure — watch exposure indicators and charts, not only screen appearance
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Removes the need for rectangular collimation
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Is an IR(ME)R incident by itself
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Question 8 of 8

8. Question

The Radiation Protection Supervisor (RPS):

Replaces the need for an employer
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Supervises work against local rules; the RPA provides specialist advice
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Justifies every panoramic
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Is always the receptionist
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