Procedures Skull Positioning

Question 1

For any headwork you should always

Answer 1

FB and clean IR

Question 2

Skull Routine

Answer 2

PA
AP TOWNE
Laterals (Rt and Lt)

Question 3

PA Skull
IR
SID

Answer 3

10x12 LW

40in

Question 3

PA Skull

CR

Answer 3

Perp to nasion

Question 4

PA Skull
PP
(3)

Answer 4

Pt seated true AP
OML perpendicular to IR
Head resting on forehead and nose

Question 6

PA Skull
SS
(4)

Answer 6

Anterior and side walls of cranium
Crista galli
IAC
Lateral borders of orbits

Question 7

Eval criteria
PA Skull
(3)

Answer 7

Petrous ridges 2/3 - filling orbits
no tilt or rotation
AP orbits will be magnified

Question 8

Other name for AP Towne

Answer 8

Grashey

Question 9

AP Towne
IR
SID

Answer 9

10x12 LW

40”

Question 10

AP Towne

CR

Answer 10

Angle 30 degrees caudal to pass through sella tursica

Question 10

How to find sella tursica

Answer 10

.75 in up anterior and superior from EAM

Question 11

AP Towne
PP
(2)

Answer 11

Seated
True AP
OML perp to IR

Question 12

AP Towne
SS
(4)

Answer 12

Primarily demonstrates occipital bone
Posterior clinoid processes
Dorsum sellae
Coronal and Lambdoidal sutures

Question 13

Eval Criteria
AP Towne
(3)

Answer 13

Dorsum sellae and posterior clinoids within foramen magnum

No tilt or rotation

Question 14

Laterals Lt and Rt
IR
SID

Answer 14

10x12 CW

40”

Question 15

Laterals
PP
(5)

Answer 15

Body is semi-prone
head true lateral 
MSP // IR
IPL Perp to IR
IOML Perp to front edge of IR

Question 16

Laterals
SS
(6)

Answer 16

Lateral projection of entire cranium
Detail of side adjacent to IR
Sella turisca
Anterior clinoids
Posterior clinoids
Dorsum sellae

Question 17

Laterals
Eval Criteria
Tilt
(5)

Answer 17

Mandibular shadows
orbital plates
sella tursica
anterior clinoid 
base of skull

Question 18

Laterals
Eval Criteria
Rotation
(5)

Answer 18

Mandibular shadows
squama portion of frontals
squama portion of occipital
anterior and posterior clinoid processes
sella tursica

Question 19

Non Routine
XTable Lateral Skull
IR
SID

Answer 19

10x12 CW to pt with slip on grid

40”

Question 20

XTable Lateral Skull

CR

Answer 20

Perpendicular to 2” SUPERIOR to EAM

Question 21

XTable Lateral Skull
PP
(3)

Answer 21

Supine
No rotation of head
Elevate head on sponge

Question 22

Xtable Lateral Skull
SS
(2)

Answer 22

Detail of side adjacent to IR

Demonstrates possible A/F level in sphenoid sinus which may indicate basilar skull fracture

Question 23

Xtable Lateral Skull

Eval criteria

Answer 23

Same as lateral

Question 24

Sinuses Routine

Answer 24

Caldwell Open mouth waters Lateral of affected side SMV ALL MUST HAVE EVIDENCE OF COLLIMATION ON ALL FOUR SIDES

Question 25

Other name for Caldwell

Answer 25

AP Axial

Question 26

Caldwell IR SID

Answer 26

8X10 LW | 40"

Question 27

Caldwell | CR

Answer 27

angle 15° caudal to nasion

Question 28

Caldwell PP (3)

Answer 28

Seated true PA OML perp to IR Head resting on forehead and nose

Question 29

Caldwell | Eval Criteria

Answer 29

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

Question 30

Open Mouth Waters other name

Answer 30

Paritoacanthial

Question 31

Open Mouth Waters IR SID

Answer 31

8X10 LW | 40in

Question 32

Open Mouth Waters | CR

Answer 32

Perpendicular to open mouth

Question 33

Open Mouth Waters PP (3)

Answer 33

Pt seated true PA MML Perpendicular to IR Then have pt open mouth by dropping jaw

Question 34

Open Mouth Waters (SS) (3)

Answer 34

Maxillary sinuses Sphenoid sinus seen through open mouth bony nasal septum also demoed

Question 35

Open Mouth Waters Eval Criteria (3)

Answer 35

Petrous ridges just below maxillary sinuses no tilt or rotation mouth open

Question 36

Lateral-Affected side IR SID

Answer 36

8X10 LW | 40 IN

Question 37

Lateral-Affected side | CR

Answer 37

Perp to 1/2 way between outer canthus and EAM

Question 38

Lateral-Affected side PP (6)

Answer 38

``` Semi Prone seated MSP // IR IPL Perp IR IOML Perp front edge of IR Head true lateral ```

Question 39

Lateral-Affected side SS (2)

Answer 39

Lateral Projection | Sella tursica

Question 40

Lateral-Affected side | Evaluation Criteria

Answer 40

tilt and rotation: sella tursica mandible orbital plates for tilt

Question 41

SMV IR SID

Answer 41

8X10 LW | 40in

Question 42

SMV | CR

Answer 42

Perp to IOML entering midway between goinions to pass through sella tursica

Question 43

SMV PP (3)

Answer 43

Seated start AP Tip back until vertex is resting on IR IOML // to IR no tilt or rotation

Question 44

SMV SS (1)

Answer 44

Sphenoid sinus anterior to foramen magnum

Question 45

SMV | Eval Criteria

Answer 45

Mandible S/I on frontal bone Mandibular condyles anterior to petrous pyramids No tilt or roation