RADT 3044- cranium/sinuses/facial bones exam Flashcards

1
Q

what position is the pt in for Lateral Cranium proj

A

RAO/LAO

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2
Q

what plane is parallel for the Lateral Cranium proj

A

MSP

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3
Q

what plane is perpendicular for Lateral Cranium proj

A

IP (interpupillary line)

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4
Q

what plane is perpendicular to the anterior border of the collimation/IR

A

IOML

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5
Q

CR for Lateral Cranium proj

A

perpendicular

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6
Q

SID for Lateral Cranium proj

A

40 inches

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7
Q

centering for Lateral Cranium proj

A

2” superior to EAM

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8
Q

collimation for Lateral Cranium proj

A

1/2”-1” beyond superior, anterior, and posterior surfaces (approx. 12x10)

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9
Q

marking for Lateral Cranium proj

A

lead marker, side closest, anterior

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10
Q

shielding for Lateral Cranium proj

A

gonadal

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11
Q

BI for Lateral Cranium proj

A

suspend

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12
Q

Eval Criteria: Lateral Cranium proj (pt not titled or rotated demonstrated by):

A

superimposed orbital roofs, sella turcica in profile, superimposed mandibular rami, superimposed mastoid regions and EAM, superimposed TMJs

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13
Q

Eval Criteria: Lateral Cranium proj (if IOML is perpendicular to IR/collimation)

A

mandibular rami NOT superimposing the C-spine

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14
Q

what is the method name for the PA axial cranium

A

caldwell

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15
Q

what planes are perpendicular for PA axial cranium

A

OML- done by placing the forehead and nose against the bucky; MSP is also

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16
Q

CR for PA axial cranium

A

15 caudal (i got called down a well when i was 15)

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17
Q

SID for PA axial cranium

A

40 inches

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18
Q

Centering for PA axial cranium

A

L: MSP; T: exit the nasion

19
Q

collimation for PA axial cranium

A

1/2”-1” beyond superior, anterior, and posterior surfaces (approx. 10x12)

20
Q

marking for PA axial cranium

A

R lead marker, R side

21
Q

shielding for PA axial cranium

A

gonadal

22
Q

BI for PA axial cranium

A

suspend

23
Q

Eval Criteria: PA axial cranium (entire cranium without rotation or tilt demonstrated by):

A

equal distances from lateral borders of the skull to lateral border of orbits of BOTH sides, symmetric petrous ridges

24
Q

Eval Criteria: PA axial cranium (if no tilt):

A

MSP of cranium aligned w/ long axis of collimated field

25
Q

Eval Criteria: PA axial cranium (if OML is perpendicular):

A

the petrous ridges fill the lower 1/3 of the orbits

26
Q

Eval Criteria: PA axial cranium for CR:

A

the petrous ridges fill the lower 1/3 of the orbits

27
Q

Eval Criteria: PA axial cranium- centering

A

nasion centered

28
Q

What is the method name for the Cranium AP axial proj

A

Towne

29
Q

what plane should be perpendicular for Cranium AP axial proj

A

OML- by flexing neck/bringing chin in; MSP

30
Q

CR for Cranium AP axial proj

A

30 caudal (i went downTOWNE when i was 30)

31
Q

SID for Cranium AP axial proj

A

40”

32
Q

centering for Cranium AP axial proj

A

2.5” above the glabella (passing though the EAM)

33
Q

collimation for Cranium AP axial proj

A

1/2”-1” beyond superior, anterior, and posterior surfaces (approx. 10x12)

34
Q

marking for Cranium AP axial proj

A

R marker, R side

35
Q

shielding for Cranium AP axial proj

A

gonadal

36
Q

BI for Cranium AP axial proj

A

suspend

37
Q

Eval Criteria for Cranium AP axial proj (to demonstrate entire cranium without rotation or tilt):

A

equal distances from lateral borders of skull to lateral margins of foramen magnum on BOTH sides; symmetric petrous pyraminds

38
Q

Eval Criteria for Cranium AP axial proj- to ensure NO tilt

A

MSP of cranium aligned with long axis of the collimated field

39
Q

Eval Criteria for Cranium AP axial proj- to demonstrate OML is perpendicular

A

the dorsum sellae and posterior clinoid processes are visible within foramen magnum

40
Q

Eval Criteria for Cranium AP axial proj- CR

A

the dorsum sellae and posterior clinoid processes are visible within foramen magnum

41
Q

Eval Criteria for Cranium AP axial proj- centering

A

cranium centered

42
Q

what is the method name for the Cranium PA axial proj

A

Haas “Reverse Towne”

43
Q

what plane is perpendicular for the Cranium PA axial proj

A

OML- done by placing the nose and forehead against the bucky; MSP is also perpendicular