RADT 3044- cranium/sinuses/facial bones exam

Question 1

what position is the pt in for Lateral Cranium proj

Answer 1

RAO/LAO

Question 2

what plane is parallel for the Lateral Cranium proj

Answer 2

MSP

Question 3

what plane is perpendicular for Lateral Cranium proj

Answer 3

IP (interpupillary line)

Question 4

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

Answer 4

IOML

Question 5

CR for Lateral Cranium proj

Answer 5

perpendicular

Question 6

SID for Lateral Cranium proj

Answer 6

40 inches

Question 7

centering for Lateral Cranium proj

Answer 7

2” superior to EAM

Question 8

collimation for Lateral Cranium proj

Answer 8

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

Question 9

marking for Lateral Cranium proj

Answer 9

lead marker, side closest, anterior

Question 10

shielding for Lateral Cranium proj

Answer 10

gonadal

Question 11

BI for Lateral Cranium proj

Answer 11

suspend

Question 12

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

Answer 12

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

Question 13

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

Answer 13

mandibular rami NOT superimposing the C-spine

Question 14

what is the method name for the PA axial cranium

Answer 14

caldwell

Question 15

what planes are perpendicular for PA axial cranium

Answer 15

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

Question 16

CR for PA axial cranium

Answer 16

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

Question 17

SID for PA axial cranium

Answer 17

40 inches

Question 18

Centering for PA axial cranium

Answer 18

L: MSP; T: exit the nasion

Question 19

collimation for PA axial cranium

Answer 19

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

Question 20

marking for PA axial cranium

Answer 20

R lead marker, R side

Question 21

shielding for PA axial cranium

Answer 21

gonadal

Question 22

BI for PA axial cranium

Answer 22

suspend

Question 23

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

Answer 23

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

Question 24

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

Answer 24

MSP of cranium aligned w/ long axis of collimated field

Question 25

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

Answer 25

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

Question 26

Eval Criteria: PA axial cranium for CR:

Answer 26

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

Question 27

Eval Criteria: PA axial cranium- centering

Answer 27

nasion centered

Question 28

What is the method name for the Cranium AP axial proj

Answer 28

Towne

Question 29

what plane should be perpendicular for Cranium AP axial proj

Answer 29

OML- by flexing neck/bringing chin in; MSP

Question 30

CR for Cranium AP axial proj

Answer 30

30 caudal (i went downTOWNE when i was 30)

Question 31

SID for Cranium AP axial proj

Answer 31

40"

Question 32

centering for Cranium AP axial proj

Answer 32

2.5" above the glabella (passing though the EAM)

Question 33

collimation for Cranium AP axial proj

Answer 33

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

Question 34

marking for Cranium AP axial proj

Answer 34

R marker, R side

Question 35

shielding for Cranium AP axial proj

Answer 35

gonadal

Question 36

BI for Cranium AP axial proj

Answer 36

suspend

Question 37

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

Answer 37

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

Question 38

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

Answer 38

MSP of cranium aligned with long axis of the collimated field

Question 39

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

Answer 39

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

Question 40

Eval Criteria for Cranium AP axial proj- CR

Answer 40

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

Question 41

Eval Criteria for Cranium AP axial proj- centering

Answer 41

cranium centered

Question 42

what is the method name for the Cranium PA axial proj

Answer 42

Haas "Reverse Towne"

Question 43

what plane is perpendicular for the Cranium PA axial proj

Answer 43

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