Quiz 2 Flashcards
Zygo SMV position
- patients vertex on film
- IOML parallel with IR
- MSP perpendicular with IR
What bone is associated with the Zygo
•temporal bone
Zygo SMV; Reference/CR
- 0 degrees perpendicular to IOML entering
* 1-1/2” posteriorly to mandibular symphysis
ZyGo SMV structures shown
•bilateral zygomatic arches
What do we look for during a Rhese
•optic foramen in lower quadrant of orbit
Parieto-Orbital oblique (Rhese) position
- prone or seated erect
- patients zygoma, nose, & chin resting on film
- AML perpendicular to IR & MSP 53 degrees to film
What sits inside the sella turcica
•pituitary gland
What bone is the sella turcica part of
•sphenoid bone
PA Axial Caldwell position
- seated erect MSP & OML perpendicular to IR
* forehead & nose on film
CALDWELL CR
•15 degrees caudal exiting the nasion
Best projection to view sella turcica
Skull;
•lateral
•AP axial
Lateral facial bone; CR
CR;
•perpendicular entering through mid zygomatic arch.
Lateral facial bones position
- semi prone or seated erect
- MSP parallel to IR
- interpupillary line perpendicular to IR
- IOML parallel to IR
Lateral facial bones structures shown
- all facial bones
* sella turcica in profile
2 facial bones that make up the roof of the mouth
- palatine
* vomer
Skull facial bones (Reverse Waters); CR/position
- perpendicular enters acanthion
- for trauma patient
- supine or seated OML 37 degrees to IR
Skull facial bones (modified waters) position
- prone or seated erect
- MSP perpendicular to film
- hyperextend head so that OML 37 degrees to film
- chin rests on film
Zygomatic arches tangential; CR
•perpendicular to IOML
Zygomatic arches Tangential position
- seated or supine
- vertex on film
- IOML parallel
- MSP rotated 15 degrees towards side of interest
- tilt top of the head 15 degrees away from side being examined
Mandible axiolateral oblique;
CR upright/supine
CR;
•upright 25 degrees cephalic
•supine 20 degrees cephalic
•entering the mandible
Mandible axialateral oblique position “the rotations”
- head/Ramus in true lateral
- extend chin
- (body)rotate head 30 degrees toward IR
- symphysis (mental) Rotate 45 degrees towards IR
CR is perpendicular entering 3/4” anterior & 3/4” superior to EAM that is up is what view
•lateral sella turcica
Waters is used to view
•facial bones