Procedures Skull Positioning Review Flashcards
(43 cards)
Skull Routine
PA Skull
AP Towne
RT/LT Laterals
Sinuses Routine
Caldwell
Open Mouth Waters
Lateral of affected side
Submentalvertical
PA Skull
CR
⊥ nasion
AP Towne
CR
<30° Caudal to pass through sella tursica
AP Towne
CR on not flexible pt
<37° Caudal to pass through sella tursica
Lateral Skull
CR
⊥ 2” Above EAM
XTable Lateral Skull
CR
⊥ 2” Superior to EAM
Caldwell Sinus
CR
<15° Caudal to nasion
Open Mouth Waters Sinus
⊥ open mouth
Lateral of affected side
⊥ to 1/2 way between outer canthus and EAM
SMV Sinus
⊥ to IOML entering midway between gonions to pass through sella tursica
PA Skull
SS
Frontal bone
AP Towne
SS
4
Occipital bone
Laterals Skull
SS
6
(Side closest to IR)
Parietal and temporal
Xtalbe Lateral
SS
2
Detail of side closest to IR
Demonstrates possible A/F levels in sphenoid sinus which may indicate basilar skull fx
Caldwell
SS
1
Best demonstrates frontal and ethmoid sinuses
Open Mouth Waters Sinuses
SS
2
Maxillary sinuses
Sphenoid sinuses
Seen through open mouth
Lateral affected side Sinuses
SS
2
Lateral projection of all 4 sides
Sella tursica
SMV Sinuses
SS
1
Sphenoid sinus anterior to foramen magnum
PA Skull
Eval Criteria
3
Petrous ridges 2/3 to filling orbits
AP, Orbits will be magnified
No tilt or rotation
AP Towne
Eval Criteria
2
Dorsum sellae and posterior clinoids within foramen magnum
No tilt or rotation
Caldwell Sinuses
Eval Criteria
2
No tilt or rotation
Petrous ridges in lower 1/3 of orbits
Open Mouth Waters
Eval Criteria
3
Mouth open
No tilt or rotation
Petrous ridges just below maxillary sinuses
Lateral Sinuses
Eval Criteria
3
Sella tursica
Mandible
Frontal bone