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Radiology > Important Info Part 3 2.2 > Flashcards

Important Info Part 3 2.2 Flashcards

1
Q

What is the unit of effective dose?

A

-Rem and Sievert

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2
Q

High speed electrons are made by filament and go toward the ____

A

tungsten target

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3
Q

Cells more resistant to radiation will..
a. High capacity of reproduction, less differentiation
b. Low capacity to reproduction, more differentiation

A

Low capacity to reproduction, more differentiation

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4
Q

Increasing the cone length will…
a. high density
b. low density
c. increase sharpness, low density
d. increase sharpness, high density

A

increase sharpness, high density

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5
Q

What image is between x-ray source and rotation center?
a. ghost image
b. real image

A

ghost image

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6
Q

What does not cause ionization?
a. photoelectric
b. coherent
c. photo absorption
d. compton

A

coherent

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7
Q

If any object moves distal as the source moves distal, where is it located?
a. lingual
b. buccal
c. mesial
d. distal

A

lingual

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8
Q

What is tissue modification factor?

A

effective dose

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9
Q

Factors affecting caries presentation.

A

angular of x ray beam and degree of cavitation

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10
Q

What is an intraoral radiograph sign of present or past periodontal disease?
a. alveolar bone loss at furcation of molar
b. loss of epithelial attachment
c. perio probing 5-6mm, spontaneous hemorrhage
d. 1mm between bone and CEJ

A

alveolar bone loss at the furcation of molar

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11
Q

No threshold
a. cancer
b. erythema
c. xerostomia

A

cancer

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12
Q
A

palatoglossal air space

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13
Q

What causes this error?

A

too far forward

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14
Q

What is the artifact at the bottom of the image?

A

lead apron

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15
Q

What makes up the cathode?
1. filament
2. focusing cup
3. focusing spot
4. tungsten target
a. 1,2
b. 1,3
c. 2,4
d. 3,4

A

a. 1,2
(filament and focusing cup)

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16
Q

What type of lesion is present on mesial of 19?
a. initial
b. moderate
c. advanced
d. within physiological limits

A

within physiological limits

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17
Q

What error is seen in this pano?
a. head turned
b. patient movement
c. chin up
d. chin down

A

head turned

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18
Q

Where is the narrowest part of the focal trough?
a. premolar area
b. molar area
c. incisal area

A

Incisal area

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19
Q

What is the central plane of image layer?

A

focal trough

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20
Q

What is wrong with this picture? (picture of two teeth standing alone?)
a. horizontal bone loss
b. vertical bone loss

A

vertical bone loss

21
Q

What is wrong with this picture? (picture of two teeth standing alone?)
a. horizontal bone loss
b. vertical bone loss with calculus

A

vertical bone loss with calculus

22
Q

What is occurring in this image? (image of anterior teeth)

A

vertical bone loss on 9 and anterior moderate horizontal bone loss

23
Q

What is occurring in this image?

A

mesial cervical burnout and occlusal caries

24
Q

What is a predisposition to periodontal disease?
a. dental plaque
b. tilted/rotated
c. deep probe pocket
d. mobile teeth

A

tilted/rotated

25
Q

Using the inverse law, what would occur if something was decreased by 1/4

A

the other would be increased by 16

26
Q

What is the distortion if the teeth are located outside of the central plane toward the rotation center?
a. stretched wide in a horizontal direction
b. narrower in vertical direction

A

a. stretched wide in horizontal direction

27
Q

What causes you to see the ghost image of the cervical spine?
a. patient not standing up straight
b. chin up
c. chin down

A

patient not standing up straight

28
Q

What is the crown to root ratio of this tooth?

A

2:1

29
Q

What is this?

A

sphenoid sinus

30
Q

What is seen on the #5 premolar? (sorry no pic will try to find one)

A

mesial burnout and initial caries on the distal

31
Q

What do you see on the abutment tooth molar? (sorry again no picture)

A

no recurrent caries on mesial or distal

32
Q

What is seen on this image?

A

root caries

33
Q

What affects caries diagnosis?
a. both vertical and horizontal angulation
b. only vertical angulation
c. only horizontal angulation

A

both vertical and horizontal angulation

34
Q

A shorter object to receptor distance will decrease unsharpness; smaller focal spot increase unsharpness.
a. both false
b. both true
c. first true, second false
d. first false, second true

A

first true, second false

35
Q

Identify this structure:

A

sigmoid notch

36
Q

What causes the hard palate to be superimposed onto the maxillary roots?

A

chin too far up

37
Q

Identify this structure:

A

ear

38
Q

Identify this structure

A

internal oblique ridge

39
Q

Increasing the KeV does what: ______ energy of photon and ______ penetration

A

increases; higher

40
Q

What film/size do you use for occlusal radiographs?
a. conventional
b. PSPP and conventional
c. CCD/CMOS
d. all of the above

A

PSPP and conventional

41
Q

What error causes this?

A

chin down

42
Q

What are the red circles?

A

external auditory meatus

43
Q

What this?

A

pterygopalatine fossa (pterygomaxillary fissure)

44
Q

What is this?

A

intermaxillary suture

45
Q

What is this?

A

incisive foramen

46
Q
A

maxillary sinus

47
Q

What is this radiolucency?

A

mental foramen

48
Q

What is this little baby radiolucency?

A

lingual foramen

49
Q

What is the yellow arrow pointing to?

A

condylar head

Radiology (36 decks)

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