Procedures Skull Positioning Quiz Flashcards Preview

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Flashcards in Procedures Skull Positioning Quiz Deck (19):
1

PP
Towne Skull

Pt seated true AP
OML ⊥ IR

2

PP
PA Skull

Pt seated true PA
OML ⊥ IR head resting on forehead and nose

3

PP
Lateral Skull

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

4

PP
Open Mouth Waters Sinus

True PA
MML ⊥ then have pt open mouth by dropping jaw

5

What projection demonstrates all sinuses

Lateral

6

Another name for Water's

Parietoacanthial

7

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

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

8

Eval Criteria
Caldwell-sinuses

No tilt or rotation
petrous ridges in lower 1/3 of orbits

9

Eval Criteria
Open Mouth Waters

Petrous ridges just below maxilla
Mouth open
No tilt or rotation

10

Eval Criteria
SMV Sinuses

No tilt or rotation
Mandible S/I Over frontal bone

11

AP Towne Skull
CR

<30° Caudal to pass through sella tursica

12

SMV Sinuses
CR

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

13

Caldwell sinuses
CR

<15° caudal to nasion

14

Xtable lateral skull
CR

⊥ 2" Superior to EAM

15

Open mouth waters sinus
CR

⊥ open mouth

16

PA Skull
CR

⊥ nasion

17

⊥ Baseline PA Skull

OML

18

⊥ Baseline Caldwell Sinus

OML

19

⊥ Baseline Lateral

IPL
IOML