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Radiography > Radiography > Flashcards

Radiography Flashcards

1
Q

State 3 points that must be contained in the local rules

A

Name of appointed RPS
Description of controlled area
Arrangements for pregnant staff

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2
Q

What do the letters IRMER stand for?

A

Ionising radiation medical exposure regulations

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3
Q

What do the letters ALARP stand for?

A

As Low As Reasonably Practicable

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4
Q

List 2 ways you implement ALARP in the practice ?

A

Use a rectangular collinator

Use fastest speed of film

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5
Q

Give 2 ways of ensuring the safe use of any X-ray equipment in practice?

A

Turn off after each exposure

Engineer checks every 3 years

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6
Q

Lost 2 procedures that can be taken to ensure xrays are of good quality

A

Use film holders
Step wedge
Clinical audit

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7
Q

List 4 precautions that could be taken to ensure radiation is used safely in practice

A

Use a collinator
Wear dose meters
1.5-2m away from beam
Ensure All staff are qualified to take xrays

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8
Q

When should radiation machines be switched off?

A

After each exposure

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9
Q

A fast film will mean reduced exposure time? True or false

A

True

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10
Q

Main role of the RPS in practice?

A

Carry out radiation risk assessment

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11
Q

State 2 pieces of information you’d expect to see in a radiation protection file

A

Copy of radiography risk assessment
Copy of staff qualifications
Local rules

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12
Q

State 2 reasons why it is important to have quality assurance programme

A

Avoid needing re take films

Keep staff and patients safe

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13
Q

Radiation monitoring badges must be worn when more than Intra oral films are taken weekly ?

A

100

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14
Q

Radiation monitoring badges must be worn when more than Extra oral films are taken weekly?

A

50

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15
Q

State 2 adverse risks to health dental radiography can have on human body?

A

Damages sensitive tissues

Damage to unborn child

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16
Q

Give 2 reasons why it is important to maintain accurate and up to date records of X-ray film expiry dates

A

To avoid using an out of date film

To use oldest stock first

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17
Q

State 2 things an OPG radiograph would usually be taken to show?

A

Impacted third molars

Un erupted teeth for ortho

18
Q

Briefly describe the image you would see on a bitewing

A

Crowns of upper and lower pre molars and molars on one side

19
Q

State 3 things a bite wing would usually be taken to show?

A

Detect caries
Early bone loss
Overhanging restorations

20
Q

State 2 things a periapical radiography would show

A

Working root length

Bone loss

21
Q

Describe the image you would see on an anterior occlusal film

A

Teeth in upper arch or teeth in lower arch

22
Q

What is a step wedge used for

A

With a test film to check quality

23
Q

Describe how intensifying screens reduce patient exposure to xrays

A

When hit by radiation the intensifying screen glows which produces the image quicker

24
Q

Controlled area?

A

1.5-2m patient only zone for radiographs

25
Q

What further info should be recorded in pt notes after date operator standard setting and justification

A

Grade of film
Type of film
Outcome of film

26
Q

State 3 hazards of handling the processing chemicals used in dental radiography

A

Risk of inhalation
Risk of skin contact
Risk of spillage

27
Q

How should spent fixer be disposed of?

A

Red stream special waste

28
Q

What is the correct sequence of events when manually developing a radiograph

A

Developer, Wash, Fixer, Wash

29
Q

What is the function of lead foil in an X-ray film packet?

A

Absorbs xrays stops xrays travelling

30
Q

What is the function of the black paper in an X-ray film packet?

A

Prevents light leakage

31
Q

What is the correct order of layers in an intra oral X-ray film packet?

A

Paper, film, paper, lead foil

32
Q

What is used to capture the image in digital radiography instead of a film

A

Direct digital sensor

Phospur storage plate

33
Q

Grade 1?

A

Excellent diagnostic quality
Quality target 70% of films
No errors in exposure

34
Q

Grade 2?

A

Acceptable diagnostic quality
Quality target 20% of films
Some errors in exposure positioning or processing

35
Q

Grade 3?

A

Unacceptable diagnostic quality
Target quality 10% of films
Errors in exposure

36
Q

Digital radiography advantages and disadvantages

A

Lower dose of radiation
No hazardous chemicals needed
Can enhance image

Expensive
Image may be manipulated in error

37
Q

Fogging of X-ray?

A

Light leakage

38
Q

Blurred X-ray?

A

Patient moved

39
Q

Brown green discolouration

A

Under fixed

40
Q

Excessive film bending

A

Poor handling

Radiography (1 decks)

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