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PEDO Quiz 1 (post Midterm)-- Fall > Radiographic Technique > Flashcards

Radiographic Technique Flashcards

1
Q

T/F Clinical exam is done after X-rays are taken

A

f- before

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2
Q

What are the deciding factors to determine if a kid should get X-rays

A

Stage of dentition development

-Risk of caries

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3
Q

What are the three primary biologic effects of low level radiation

A
  • Carcinogenesis
  • Teratofenesis (malformations)
  • Mutagenesis
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4
Q

Carcinogenesis and mutagensis is a response of what tissues

A

somatic

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5
Q

Mutagenesis may occur as a response of _ tissues

A

genetic (gonadal)

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6
Q

(Younger/older) tissues are more sensitive to radiation

A

younger

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7
Q

What is the most sensitive organ to radiation induced tumors (begnin and malignant)

A

juvenile thyroid

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8
Q

Risk of radiation induced tumors in the thyroid essentially disappears after what age

A

20

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9
Q

T/F No special considerations apply to dental X-rays for patients undergoing radiation therapy to the head and neck

A

T

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10
Q

Radiation exposure to _ in pregnant women is associated with what birth complication

A

thyroid…low birth weight

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11
Q

T/F Common dental X-rays will often deliver measurable absorbed radiation doses to the fetus

A

f

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12
Q

Our national average exposure to natural background radiation averages…

A

360 mrem/year

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13
Q

What are the first and second largest source of radiation exposure in america

A 
1= radon and thoron
2= medical procedures
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14
Q

Typical dental x-rays exposes the patient to ~_mrem

A

1.5

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15
Q

The faster the flim speed the _ the exposure

A

less

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16
Q

_ is the lowest dental film… the fastest?

A

D… F

17
Q

Faster films (increases/decreases) error from patient movement

A

decreases

18
Q

Digital imaging reduces ration dose by -%

A

40-60%

19
Q

What are the benefits of digital film

A
  • Environmentally friendly
  • No more chemicals or disposal fees
  • Instant images allow significant time savings
  • Increased productivity
  • More chairside time
  • Increased tx plan acceptance
  • Affordable technology
  • Rapid return on investment
20
Q

How should the operator of the X-ray tube position themselves when shooting a film

A
  • Stand behind a barrier
  • Stand at least 2 m from the tube head
  • Stand at a 45 degree angle from the primary beam as it exits the patient
21
Q

Max scatter occurs where relative to the position of the primary beam

A

90-180 degrees from primary beam as it enters the patient

22
Q

Extraoral films for soft tissue trauma use _ the normal exposure from intraoral films

A

1/4

23
Q

Guidelines for prescribing X-rays: Recall patient with transitional dentition and increased risk for caries

A

6-12 mo

24
Q

Guidelines for prescribing X-rays: Recall patient Primary dentition at increased caries risk

A

6-12 mo

25
Q

Guidelines for prescribing X-rays: Recall patient Adolescent with permenant teeth at increased risk for caries

A

6-12. mo

26
Q

Guidelines for prescribing X-rays: Recall, Adult patient dentate at increased risk for caries

A

6-18 mon

27
Q

Guidelines for prescribing X-rays: New Patient Adolescent with permanent teeth

A

Posterior BWs and PAN

FMX is there are clinical signs of decay or extensive dental work done

28
Q

Guidelines for prescribing X-rays: New Patient Adult dentate

A

Posterior BWs and PAN

FMX is there are clinical signs of decay or extensive dental work done

29
Q

Guidelines for prescribing X-rays: New Patient Primary dentition

A

Individualized

  • Open contacts and no disease- no X-rays
  • Closed contacts- BWs
  • If tehre is clinical disease you may still take BWs even if the contacts are open
30
Q

Guidelines for prescribing X-rays: New Patient Transitional dentition

A

Individualized

  • BWs
  • PAN
31
Q

Guidelines for prescribing X-rays: New Patient Adult edentulous

A

Individualized based on clinical signs and symptoms

32
Q

Guidelines for prescribing X-rays: Recall Patient transitional dentition with no history of caries

A

12-24 mo.

33
Q

Guidelines for prescribing X-rays: Recall Patient Adult permanent dentition no history of caries

A

24-36 mo.

34
Q

Guidelines for prescribing X-rays: Recall Patient with primary teeth and no history of caries

A

12-24 mo

35
Q

Guidelines for prescribing X-rays: Recall Patient adolescent with permenant teeth and no history of caries

A

18-36 mo.

36
Q

Guidelines for prescribing X-rays: Recall patients with periodontal disease

A

For all ages and teeth use your clinical judgement (likely BWs and PAs).

37
Q

For all other X-rays use your clinical judgement on whether or not to take them!

A

OK

PEDO Quiz 1 (post Midterm)-- Fall (6 decks)

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