Procedures Skull Positioning Quiz

Question 1

PP

Towne Skull

Answer 1

Pt seated true AP

OML ⊥ IR

Question 2

PP

PA Skull

Answer 2

Pt seated true PA

OML ⊥ IR head resting on forehead and nose

Question 3

PP

Lateral Skull

Answer 3

Pt seated
Head true lateral
Body semiprone
MSP // IR
IOML ⊥ edge of IR
IPL ⊥ IR

Question 4

PP

Open Mouth Waters Sinus

Answer 4

True PA

MML ⊥ then have pt open mouth by dropping jaw

Question 5

What projection demonstrates all sinuses

Answer 5

Lateral

Question 6

Another name for Water’s

Answer 6

Parietoacanthial

Question 7

Name 3 classifications of skull and describe how the petrous ridges sit in each

Answer 7

Dolichocephalic 40° opening posteriorly
Brachycephalic 54° opening posteriorly
Mesocephalic 47° opening posteriorly

Question 8

Eval Criteria

Caldwell-sinuses

Answer 8

No tilt or rotation

petrous ridges in lower 1/3 of orbits

Question 9

Eval Criteria

Open Mouth Waters

Answer 9

Petrous ridges just below maxilla
Mouth open
No tilt or rotation

Question 10

Eval Criteria

SMV Sinuses

Answer 10

No tilt or rotation

Mandible S/I Over frontal bone

Question 11

AP Towne Skull

CR

Answer 11

<30° Caudal to pass through sella tursica

Question 12

SMV Sinuses

CR

Answer 12

⊥ to IOML, 1/2 way between gonions to pass through sella

Question 13

Caldwell sinuses

CR

Answer 13

<15° caudal to nasion

Question 14

Xtable lateral skull

CR

Answer 14

⊥ 2” Superior to EAM

Question 15

Open mouth waters sinus

CR

Answer 15

⊥ open mouth

Question 16

PA Skull

CR

Answer 16

⊥ nasion

Question 17

⊥ Baseline PA Skull

Answer 17

OML

Question 18

⊥ Baseline Caldwell Sinus

Answer 18

OML

Question 19

⊥ Baseline Lateral

Answer 19

IPL

IOML