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Radiology > Panoramic positioning errors > Flashcards

Panoramic positioning errors Flashcards

1
Q

What is important for panoramic proper positioning?

A

Patient positioning and head alignment

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2
Q

What do patients need to remove for a panoramic radiograph?

A

Dental appliances
Earrings
Necklaces
Hairpins
Glasses

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3
Q

What is wrong with this image?

A

glasses

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4
Q

What is wrong with this image?

A

earrings

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5
Q

What is wrong with this image?

A

necklace

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6
Q

What is wrong with this image?

A

hairpins

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7
Q

What is wrong with this image?

A

removable prosthodontic device

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8
Q

What should you be able to see with proper positioning for a panoramic?

A
  • Teeth and jaws sharply depicted.
  • Slight curvature of occlusal plane.
  • Equal magnification on left and right side.
  • No air space obstructing view of maxillary roots.
  • No ghost image of cervical spine in midline
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9
Q

What is wrong with this image?

A

Too far forward

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10
Q

What happens if a panoramic is taken too far forward?

A
  • Anterior teeth narrowed and blurred.
  • Cervical spine superimposed on ramus (double real image of cervical spine)
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11
Q

What is wrong with this image?

A

too far forward

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12
Q

What is wrong with this image?

A

too far back

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13
Q

What happens if a panoramic is taken too far back?

A
  • Anterior teeth widened and blurred.
  • Inferior turbinates and meati spread across maxillary sinuses.
  • Condyles close to or cut off side of image.
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14
Q

What is wrong with this image?

A

too far back

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15
Q

What is wrong with this image?

A

Inferior turbinates and meati spread across maxillary sinuses (too far back)
(also ghost image of earrings?-haley)

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16
Q

What is wrong with this image?

A

chin down

17
Q

What happens if a panoramic is taken with the chin down?

A
  • Excessive curvature of occlusal plane.
  • Roots of mandibular anterior teeth are blurred.
  • Rami/condyles tipped inward.
  • Condyles close to or cut off top of image.
  • Hyoid bone superimposed on mandible.
18
Q

What is wrong with this image?

A

chin down

19
Q

What is wrong with this image?

A

chin down and too far forward

20
Q

What is wrong with this image?

A

chin up

21
Q

What happens if a panoramic is taken with the chin up?

A
  • Flat occlusal plane or reverse curvature.
  • Roots of maxillary anterior teeth are blurred.
  • Rami/condyles tipped laterally.
  • Condyles close to or cut off side of image.
  • Hard palate superimposed on maxillary apices.
22
Q

What is wrong with this image?

A

chin up

23
Q

What is wrong with this image?

A

head turned

24
Q

What happens if a panoramic is taken with the head turned?

A
  • Unequal magnification of left and right side (teeth, ramus)
  • Increased blurring and overlapping of contacts on one side.
25
Q

When head is turned to the right, the posterior right dentition moves farther from the sensor so the teeth will project ________ on the radiographic image

A

wider

26
Q

When head is turned to the right, the posterior left dentition moves closer to the sensor so the teeth will project _________ on the radiographic image

A

narrower

27
Q

What is wrong with this image?

A

head turned

28
Q

Due to a left side shift, posterior teeth on left side will be closer to the sensor and project _________ on the radiographic image

A

narrower

29
Q

Due to a left side shift, posterior teeth on right side will be farther from the sensor and project __________

A

wider

30
Q

What is wrong with this image?

A

patient slumped

31
Q

What is wrong with this image?

A

patient slumped

32
Q

What is wrong with this image?

A

TONGUE NOT AT ROOF OF MOUTH
- palatoglossal air space

33
Q

What is wrong with this image?

A

lead apron artifact

34
Q

What is wrong with this image?

A

Ghost image of cervical spine and lead apron artifact.

35
Q

What is wrong with this image?

A

partial panoramic image

36
Q

What is wrong with this image?

A

patient movement

Radiology (39 decks)

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